Harry and Penelope Seidler House

Item details


Name of item:	Harry and Penelope Seidler House
Type of item:	Built
Group/Collection:	Residential buildings (private)
Category:	House
Location:	Lat: -33.7592391650 Long: 151.1663444300
Primary address:	13 Kalang Avenue, Killara, NSW 2071
Parish:	Gordon
County:	Cumberland
Local govt. area:	Ku-Ring-Gai
Local Aboriginal Land Council:	Metropolitan

Property description

Lot/Volume Code	Lot/Volume Number	Section Number	Plan/Folio Code	Plan/Folio Number
LOT	11		DP	580188

All addresses

Street Address	Suburb/town	LGA	Parish	County	Type
13 Kalang Avenue	Killara	Ku-Ring-Gai	Gordon	Cumberland	Primary Address

Owner/s

Organisation Name	Owner Category	Date Ownership Updated
	Private

Statement of significance:


	The Harry and Penelope Seidler House is of State heritage significance as the home of the pre-eminent Australian modernist architect Harry Seidler AC OBE (25/06/1923 - 9/03/2006) and his wife and professional partner Penelope Seidler (b.15/12/1938). The dramatic reinforced concrete and glass residence occupying a steep bushland site on Sydney's North Shore was designed by Harry and Penelope Seidler in 1966 -7 as their principal residence. The house is a pure expression of the modernist methodology of Harry Seidler who is internationally recognised as a member of the Third Generation of 20th Century Architects . The Harry & Penelope Seidler House is significant at the State level as one of the Seidler's finest domestic works and for its continued association with Harry Seidler as his principal residence. It has been the venue for the Seidler family's significant contribution to Australia's architectural, cultural, and artistic life for almost four decades. The Harry & Penelope Seidler House is regarded as an outstanding work of architecture by the architectural profession. It is widely regarded as one of the most outstanding examples of domestic architecture in Australia. In 1967 the NSW Chapter of the Royal Australian Institute of Architects awarded the Seidler House the Wilkinson Award. Harry & Penelope Seidler House demonstrates the innovative use of commercial scale structural techniques in a residential design.
	Date significance updated: 20 Feb 08
	Note: The State Heritage Inventory provides information about heritage items listed by local and State government agencies. The State Heritage Inventory is continually being updated by local and State agencies as new information becomes available. Read the Department of Premier and Cabinet copyright and disclaimer.

Description


Designer/Maker:	Architects: Harry and Penelope Seidler, Harry Seidler & Associates.
Builder/Maker:	Peter Cussel
Construction years:	1966-1967
Physical description:	Architects: Harry and Penelope Seidler, Harry Seidler & Associates Structural Engineers: Miller, Milston & Ferris Lighting: Edison Price (New York) Landscape Architect: Bruce Mackenzie The building occupies a steep bushland site, sloping westwards to a creek. The building is approached from the road at the top and steps down from a cantilevered garage through four half levels which follow the slope of the land. The structure consist of four suspended concrete trays supported by reinforced concrete block traverse blades which divide the building into north facing daytime/active spaces, a central circulation spine and night time/passive spaces. The top level consists of kitchen, dining and study, the next living room and main bedroom, the third children's room and bathroom, with studio, laundry and guest bedroom at the bottom having access to the garden. The house embodies both a vertical and horizontal extension of space. The level changes and central open well provide a visual link from top to bottom. Large areas of glass and projecting terraces draw the eye out from each level to the natural landscape setting. Materials include board formed reinforced concrete, rubble stonework, white concrete block work and Tasmanian Oak boarded ceilings. The integrated artworks include K Nolan, Frank Stella, H Frankenthaler, work by Sam Frances, a Charles Perry sculture, Max Bill, several "Positive-Negative" sculptures by Norman Carlberg and two Calder stabiles. The garden contains a sculpture titled Prime Matter V by the Los Angeles sculptor Eric Orr (purchased after display at the Sydney Art Biennale in 1986).
Physical condition and/or Archaeological potential:	Physical condition is excellent. Archaeological potential is not known.
	Date condition updated:06 Jan 05
Modifications and dates:	1970 circa - A swimming pool designed by Harry Seidler was added in the early 1970s. 1997 - A garage door was installed for privacy reasons. The electrical wiring for such a door had actually been installed when the house was constructed in 1967, in case he ever changed his mind about installing a garage door [ Correspondence of Polly Seidler to the Heritage Office 20/07/2007].


Current use:	residential
Former use:	Aboriginal land, timber-getting, residential

History

Historical notes:

HARRY SEIDLER AC OBE (25/06/1923 - 9/03/2006)
Harry Seidler was born in Vienna in 1923 into a middle-class Jewish family. The Anschluss (Nazi occupation of Austria in March 1938) terminated Seidler's schooling and influenced Seidler's parents Max Seidler and Rose Seidler (nee Schwarz) to send their youngest son on a student visa to England where he joined his brother Marcell. On 12 May, 1940, he and his older brother were interned as 'enemy aliens' - first at Bury St Edmonds, then Liverpool, the Isle of Man (where he turned 17), and Quebec in Canada. Seidler's diaries record the humiliation and discomfort of internment and the fact that he and his brother were interned alongside Nazi prisoners of war.

Seidler's parents managed to follow their sons to England thus escaping the destruction of European Jewry by the Nazis. They eventually immigrated to Australia where the family's only known relatives outside Austria, the Hermans had moved in the 1920s and established Herman Plastic Mouldings. In 1938 Mr Herman sponsored Seidler's uncle Marcus to move to Australia where he set up a clothing manufacturing business in Sydney. This business established the Seidler family in Sydney.

In 1941 Seidler was released to study at the University of Manitoba where he obtained a Bachelor of Architecture degree with first class honours. After a year of architectural work in Canada he won a scholarship to the Harvard School of Design where he studied under Walter Gropius, former head of Bauhaus. During this time Seidler (and his classmate Peter Oberander) worked with Alvo Aalto, in Cambridge Massachusetts, drawing up plans for Aalto's Baker Dormitory at MIT. He left Harvard's "electrifying atmosphere" with the "feeling that we were destined to play our part in transforming the visual man made world." Seidler's commitment to modernism was reinforced by his attendance at the 1946 summer school at Black Mountain College where he studied with Josef Albers, former design teacher at the Bauhaus.

In 1946 -48 Seidler was chief assistant to Marcel Breuer in his New York office. It was at this point in 1948 that he was enticed to Australia by his mother Rose Seidler to design and build a house for his parents. He came to Australia via Brazil and contact with the Brazilian architect Oscar Niemeyer, for whom he worked for several months.

Philip Drew has written that "the dominant influences on Seidler were Gropius, Breuer and Albers; Gropius revealed the ethical basis of Modern architecture and demonstrated the importance of method, Breuer, in a real sense showed Seidler how buildings are made, and developed his architectonic skills as well as influencing his appreciation of space and feeling for materials, but it was from Josef Albers that Seidler learned about the perceptual basis of visual form."

Rose Seidler House at Wahroonga on Sydney's North Shore was Seidler's first commission, for his mother. He was 25 at the time. It was built in 1948 - 50 as part of a family estate of three houses (including Julian Rose House c.1950 and the Marcus Seidler House c.1949 -51). Located on 2.6 hectares of natural bushland overlooking the Ku-ring-gai National Park, it was a watershed in Australian culture. As possibly the purest example of mid-century modern domestic architecture in Australia, it was enormously controversial when built, stimulating much social comment and intellectual debate. Rose Seidler House is listed on the State Heritage Register and is run as a house museum by the Historic Houses Trust.

Seidler's American take on Modernism contrasted with the European modernism of early Australian adopters such as Syd Ancher and Robin Boyd. Seidler was lauded by an older generation of modernists in Australia such as Boyd, Baldwinson and Ancher. Seidler stood his ground and refused to compromise his architectural vision in the face of restrictive building regulations in New South Wales during the 1940s and 1950s, leading to several landmark court cases.

Seidler's early houses from 1949 - 54 established an authentic version of modern architecture embracing Gropius' modernist principles (which stemmed from the Bauhaus). He designed many houses in either the box-like form of Le Corbusier or the 'H' plan of Marcel Breuer. Seidler was busy throughout the 1950s largely designing houses for private clients.

In the early 1960s Seidler began to receive commissions for apartments and office buildings such as Ithaca Gardens Apartments in Elizabeth Bay (1960), Blues Point Tower apartments in McMahons Point (1961); Lend Lease House in Sydney (1961) [Demolished 19??] and Arlington apartments at Edgecliff (1965-6). Only four significant small projects were undertaken between 1962 - 69: a ski lodge in Thredbo (1962), a holiday house in Port Hacking (1963), the Seidler's own home (1966-7) and the memorial to victims of the Holocaust, at Rookwood Cemetery (1969).

In the mid 1960s Seidler began experimenting with circular, elliptical and curvilinear geometrics. The choice of a circular plan for the ground breaking Australia Square Building 1963 - 7 marked an important departure from the established rectilinear order of Seidler's earlier work [Philip Drew].

In the 1970s Seidler's practice was largely devoted to major commercial projects in Australia and abroad. This period saw the design and construction of Seidler's own offices at Glen Street, Milsons Point, Sydney; the MLC Centre in Sydney (1972); the Edmund Barton Building, Canberra; the Australian Embassy in Paris; and commissions in Singapore (not realised) and Hong Kong.

The 1980s saw the construction of major commercial buildings such as Grosvenor Square in Sydney (1982); the Waverley Civic Centre (now called Monash City Council) at Waverley in Victoria (1982); Capita Centre in Sydney (1984); Shell Headquarters in Melbourne (1985); the QV1 Office Tower in Perth (1987) and the Riverside Centre in Brisbane (1987).

In 1990s Harry Seidler and Associates designed celebrated and iconic residences and apartments such as Berman House at Joadja in the Southern Highlands (1996) and Horizon Apartments in Darlinghurst (1999).

The new century was notable for works such as the Cove Apartments at the Rocks (2004) and the Ian Thorpe Aquatic Centre at Ultimo.

Internationally Seidler is known for the Australian Embassy in Paris, the Hong Kong Club and Offices, a community for 2,500 people in Vienna, as well as buildings in Acapulco.

HARRY AND PENELOPE SEIDLER HOUSE 1966-7:
After more than twenty five years designing houses for other people Seidler and his wife Penelope determined to design a house for their own family. The site selected after much searching was located by Penelope Seidler, in Killara an established suburb of Sydney. Surrounded by a natural bush reserve, the site's rocky sandstone ledges slope steeply down toward a creek and a waterfall.

The rugged sloped land was turned to advantage by providing the rationale for a vertical dimension to the design. The Seidlers described their house as "essentially a simple rectangular outline." The four half-storey levels of the house follow the slope of the land and create between them open vertical spaces which strengthen the design's horizontal openness within and extension outward onto sunny terraces.

Seidler described the construction of the house as "solid, with muscle; everlasting." The construction of the house is of maintenance free materials, off formed concrete (inside and out) and basalt rubble stone. Three rows of vertical reinforced white concrete block piers support suspended and cantilevered concrete floors, and roof. The very long horizontal and sloping projections are stiffened by rail height parapets.

The rough textured off form concrete contrasts with the rough textured blue grey basalt walling. The floors of the living areas are surfaced with split slabs of Norwegian quartzite stone and ceiling lined with Tasmanian oak boarding. Seidler plays off textures against each other, cool is juxtaposed with warm, smooth with rough, white with primary colours.

The concrete masonry and glass of the house contrasted the precise geometry of its evident man made forms with the rugged complexity of its stony, sloping site. This house broke with the past in favouring board formed concrete and concrete block, permanent masonry in lieu of the Harvard timber idiom he pursued in the 1950s. Philip Drew has described this house as "a Brutalist 'Falling Water', more American, more late Breuer in its strong forms, and Viennese in its will to permanence, in its hard Norwegian quartzite floors and determination to impose an aesthetic on the Australian bush."

Instead of building a road on to the site, the Seidlers placed the garage and visitors' car park area at the top of the hill, directly off the street dramatically suspended over a large rock ledge which was left exposed.

The house is set within a native landscape designed by the pioneering landscape architect, Bruce McKenzie (b.1932) who provided the landscape design for a number of Seidler's projects. A swimming pool designed by Seidler was built below the house in the 1970s.

The house is widely regarded as the most outstanding example in Australia of a house in the brutalist style. It should however, be noted that Seidler strongly rejected this label and distanced himself from the Brutalists [Refer to Seidler's 1987 essay "Architecture and Planning at the end of our Century" published in "Four Decades of Architecture"]. The Royal Australian Institute of Architects awarded the house the coveted Wilkinson Award, the third won by Seidler in his then nineteen years of Australian practice.

In a 1994 interview for television "Harry Seidler: A Life" [Australian Broadcasting Corporation] Seidler said of his home "I don't think I want to live anywhere else, ever, marvellous house. We love our environment and we've never changed anything, it is as exactly as it was. The only thing that might have changed is some of the artworks...But the house itself, I think will long outlast us."

Harry Seidler resided at this house until his death at tha age of 82, at home, on 9 March, 2006, after fifty seven years of practice as an architect in NSW.

BRUCE MACKENZIE LANDSCAPE ARCHITECT
Bruce Mackenzie was born in Sydney in 1932. He studied art at East Sydney Technical College before working in the graphic arts industry. He came to consider the study of landscape architecture his life's commitment and began working in the field in 1959. After ten years of landscape and design construction, though without formal training, he was admitted into the Australian Insitute of Landscape Architects in 1969 and became National president in 1981.

Bruce Mackenzie pioneered the use and conservation of indigenous Australian planting that made use of natural structural materials and native plants, combining a romantic attachment to landscape aesthetics with a pragmatic approach to conservation. He is considered one of the foremost practitioners of the 1970s and 1980s in the promotion of landscape design that respected and harmonized with natural environments. Significantly his first article extolling the use of native plants was published in 'Architecture in Australia' in November, 1966.

In the late 1960s Mackenzie founded the firm Bruce Mackenzie and Associates. His Office was located in Ridge Street, North Sydney, in a building housing client architects such as Harry Seidler, Bruce Rickard and Harry Howard.

Bruce Mackenzie in reflecting on his involvement with the landscape design for Harry and Penelop Seidler House advised "they were early days in my career path and I would not want to add unwarranted emphasis on my contribution to the success of the building and its landscape setting. The main ingredients were already there in the form of remnant mature native trees and the landform of the small stream that the house overlooked. I merely reinforced these elements while the house itself stood proud." Mackenzie who has had a long association with the Seidlers has further reflected that "I may have to a small degree helped introduce Harry Seidler to a new consideration of landscape and its relationship to buildings and in particular to his house. The simple play for instance, of shadowed leaf patterns dancing on crisply defined facades, gained his attention and raised the image of landscape as a dynamic participant." [Correspondence of Bruce Mackenzie to the Heritage Office dated 22 August, 2006]

MARRIAGE AND PROFESSIONAL PARTNERSHIP WITH PENELOPE SEIDLER NEE EVATT:
Penelope Alice Marjorie Seidler (nee Evatt) BArch, BBus, FRAIA, ASA was born in 1938. An architect and Seidler's professional partner, Penelope Seidler is the daughter of the Hon. Clive Raleigh Evatt QC (b. 1900 d.1984); a prominent NSW Labor politician (MLA for Hurstville 1939-1959), and his wife Marjorie Hanna Evatt (nee Andreas), (b. 1903 - d.1984).

The Hon. Clive Raleigh Evatt QC, the younger brother of the famous Labor Party leader and international jurist, Herbert Vere Evatt (also known as H.V. Evatt or Doc Evatt) was representative of a new generation of non-union, liberally minded men who stressed the need for the Labor Party to appeal to a broad electorate. A man of progressive views, as Minister for Planning in the New South Wales McGirr Labor Government, Evatt overturned Willoughby Council's rejection of Harry Seidler's design for Meller House in Castlecrag, authorising its construction as a 'demonstration home' in 1950. Several years later Seidler would marry Penelope Evatt on 15 December,1958.

Harry Seidler has described his first visit to the Evatt family home at 69 Junction Road, Wahroonga, in 1950 as "momentous" and cites the Hon. Clive Evatt's support as persuasive in his decision to remain and work in Australia (Seidler, 2003). The Evatt family home now known as 'Parklands' is listed on the State Heritage Register.

The marriage to Penelope Evatt provided an entree into Australian political life . The pair attracted a good deal of publicity epitomising the up-to-the-minute modern couple [Philip Drew].

HARRY SEIDLER'S PROFESSIONAL CAREER
Harry Seidler's Education:
1933 - 38: Wasagymnasium, Vienna.
1938 - 40: Cambridge Technical College, England.
1941 - 44: Bachelor of Architecture (1st Class Hons), University of Manitoba, Canada.
1945 - 46: Master of Architecture, Harvard University, USA. Class of Professor Walter Gropius.
1946 Black Mountain College, North Carolina, USA. Design Course under artist Josef Albers.
1946 - 48: Chief Assistant to Marcel Breuer, New York.
1948: Travelled in South America and worked with Oscar Niemeyer, Rio de Janeiro, Brazil.
1949: Commenced private practice in Sydney Australia

Academic Positions:
1976 - 77: Visiting Professor, Harvard University, Graduate School of Design, United State of America.
1978: Visiting Professor, University of British Columbia Centre for Human Settlements, Canada. Thomas Jefferson Professor of Architecture, University of Virginia, United State of America.
1980: Inaugural Visiting Professor, University of New South Wales, Australia.
1984: Visiting Professor, University of Sydney, Australia.
1993: Visiting Professor, Eidgenossiche Technishe Hockschule, Zurich, Switzerland. Visiting Professor, University of Technology, Sydney, Australia.
1996 - Visiting Professor, University of Sydney, Australia. Visiting Committee, Graduate School of Design, Harvard University, United States of America.
2000: Adjunct Professor, University of Sydney, Australia.

Major Awards:
Harry Seidler is the recipient of many Royal Australian Institute of Architects (RAIA) Awards:

Sir John Sulman Medals
1951 Rose Seidler House, Wahroonga, NSW
1967 Australia Square, Sydney
1981 Harry Seidler & Associates Offices, Milsons Point, NSW
1983 MLC Centre, Sydney
1991 Grosvenor Place, Sydney

Wilkinson Awards
1965 Ski Lodge, Thredbo, NSW
1966 Muller House, Pork Hacking, NSW
1967 Seidler House, Killara, NSW
1999 Horizon Apartments, Darlinghurst, NSW

Other Awards include:
1957 Honourable Mention, for Sydney Opera House Competition
1960 Architecture and Arts Award, Ithaca Gardens Apartments, Sydney
1960 Architecture and Arts Award, Paspaley House, Darwin Gold Medal,
1966 Honorary Fellow, American Institute of Architects
1968 Pan Pacific Citation, American Institute of Architects
1972 OBE (Officer, Order of the British Empire)
1979 Fellow, Australian Academy of Technological Sciences
1980 Prize Winner, Parliament House Competition, Canberra, ACT
1984 Member, Academie d'Architecture, Paris
1987 AC (Companion, Order of Australia)
1987 Academician, International Academy of Architecture, Sofia
1988 Honorary Doctorate, University of Manitoba, Canada
1989 1st Prize, Marble Architectural Awards (Carrara, Italy), Riverside Centre, Brisbane
1989 1st Prize, Marble Architectural Awards (Carrara, Italy), Penthouse Apartment, Milsons Point, NSW
1989 City of Vienna
1991 Honorary Doctorate, University of Technology, Sydney
1996 Gold Medal Royal Institute of British Architects
1996 Austrian Gold Cross Hon. (First Class) Arts and Sciences

Harry Seidler was awarded the RAIA Gold Medal in 1977 the Institute's highest honour, for outstanding achievement in architectural design and the promotion of architecture and the profession. The RAIA Citation states " Since arriving in Australia he has practised with determined and uncompromising dedication to the cause of modern architecture. Now internationally recognised as a member of the Third Generation of 20th Century Architects, he has produced an idiom that is an amalgam of the best of the several cultures to which he has been exposed and is placed firmly in the mainstream of Modern Architecture." Three of the many contributions which he has made to architecture are, firstly the influence which he has had on young architects and students, by who he was and by what he said, rather than solely by what he did; secondly the influence which he has had on building regulations and statutory controls; and thirdly the immense contribution he has made to the public awareness of architecture [Statement of the Royal Australian Institute of Architects 2006]

A comprehensive list of Harry Seidler's awards and references to published materials can be found at www.seidler.net.au

Historic themes

Australian theme (abbrev)	New South Wales theme	Local theme
1. Environment-Tracing the evolution of a continent's special environments	Environment - naturally evolved-Activities associated with the physical surroundings that support human life and influence or shape human cultures.	Changing the environment-
2. Peopling-Peopling the continent	Migration-Activities and processes associated with the resettling of people from one place to another (international, interstate, intrastate) and the impacts of such movements	Settling post-World War II migrants and refugees-
3. Economy-Developing local, regional and national economies	Environment - cultural landscape-Activities associated with the interactions between humans, human societies and the shaping of their physical surroundings	Sydney and Australian Landmark-
3. Economy-Developing local, regional and national economies	Environment - cultural landscape-Activities associated with the interactions between humans, human societies and the shaping of their physical surroundings	Landscapes and gardens of domestic accommodation-
3. Economy-Developing local, regional and national economies	Environment - cultural landscape-Activities associated with the interactions between humans, human societies and the shaping of their physical surroundings	Landscapes demonstrating styles in landscape design-
4. Settlement-Building settlements, towns and cities	Accommodation-Activities associated with the provision of accommodation, and particular types of accommodation – does not include architectural styles – use the theme of Creative Endeavour for such activities.	Residential-
4. Settlement-Building settlements, towns and cities	Accommodation-Activities associated with the provision of accommodation, and particular types of accommodation – does not include architectural styles – use the theme of Creative Endeavour for such activities.	Eccentric residence-
4. Settlement-Building settlements, towns and cities	Accommodation-Activities associated with the provision of accommodation, and particular types of accommodation – does not include architectural styles – use the theme of Creative Endeavour for such activities.	Housing famous families-
4. Settlement-Building settlements, towns and cities	Accommodation-Activities associated with the provision of accommodation, and particular types of accommodation – does not include architectural styles – use the theme of Creative Endeavour for such activities.	Housing professional people-
4. Settlement-Building settlements, towns and cities	Land tenure-Activities and processes for identifying forms of ownership and occupancy of land and water, both Aboriginal and non-Aboriginal	Changing land uses - from rural to suburban-
4. Settlement-Building settlements, towns and cities	Towns, suburbs and villages-Activities associated with creating, planning and managing urban functions, landscapes and lifestyles in towns, suburbs and villages	20th century Suburban Developments-
4. Settlement-Building settlements, towns and cities	Towns, suburbs and villages-Activities associated with creating, planning and managing urban functions, landscapes and lifestyles in towns, suburbs and villages	Subdivision of urban estates-
4. Settlement-Building settlements, towns and cities	Towns, suburbs and villages-Activities associated with creating, planning and managing urban functions, landscapes and lifestyles in towns, suburbs and villages	Developing suburbia-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Technological innovation and design solutions-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Designing landscapes in an exemplary style-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Building in response to natural landscape features.-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Designing in an exemplary architectural style-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Landscaping - 20th c bush garden style-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Architectural styles and periods - International Style-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Interior design styles and periods - Modernist-
8. Culture-Developing cultural institutions and ways of life	Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities.	Architectural styles and periods - 20th century Modern Movement-
8. Culture-Developing cultural institutions and ways of life	Domestic life-Activities associated with creating, maintaining, living in and working around houses and institutions.	Ways of life 1950-2000-
8. Culture-Developing cultural institutions and ways of life	Domestic life-Activities associated with creating, maintaining, living in and working around houses and institutions.	Living in a bushland setting-
8. Culture-Developing cultural institutions and ways of life	Domestic life-Activities associated with creating, maintaining, living in and working around houses and institutions.	Living in suburbia-
8. Culture-Developing cultural institutions and ways of life	Leisure-Activities associated with recreation and relaxation	Visiting heritage places-
8. Culture-Developing cultural institutions and ways of life	Leisure-Activities associated with recreation and relaxation	Activities associated with relaxation and recreation-
9. Phases of Life-Marking the phases of life	Persons-Activities of, and associations with, identifiable individuals, families and communal groups	Associations with Harry Seidler Architect 1923 - 2006-
9. Phases of Life-Marking the phases of life	Persons-Activities of, and associations with, identifiable individuals, families and communal groups	Associations with Bruce Mackenzie, landscape architect-
9. Phases of Life-Marking the phases of life	Persons-Activities of, and associations with, identifiable individuals, families and communal groups	Associations with Penelope Seidler, architect-

Assessment of significance


SHR Criteria a) [Historical significance]	State significance: The Harry and Penelope Seidler House possesses State and local historical significance as a unique and iconic work of domestic architecture within a remarkable body of work spanning the second half of the Twentieth century by the Viennese born Australian modernist architect, Harry Seidler. The house designed by Harry Seidler and his architect wife, Penelope Seidler (nee Evatt), in 1966 - 7 as their principal residence with landscape design by Bruce McKenzie is a pure expression of Harry Seidler's uncompromising modernist methodology in its treatment of space, material, location and natural environment. The significance of the house and its design influences is further enhanced by an understanding of Seidler's personal history as a child refugee from Nazi oppression, illustrative of a significant pattern in Australian history in which migrants and refugees have made a major contribution to the ongoing development of Australia's cultural identity, in this case through the built environment. As a student of Gropius, Breuer and Albers, Seidler, who is internationally recognised as a member of the Third Generation of 20th Century Architects, introduced a distinctly American form of modernism that contrasted with the prevailing European inspired modernism of Australian architects at the time. The significance of the house was acknowledged in 1967 by the receipt of the Royal Australian Institute of Architects (RAIA) Wilkinson Award. It is widely regarded as the most outstanding example in Australia of a house in the Brutalist style. However, it should be noted that Seidler firmly rejected the 'Brutalist' tag. The house has been the venue for the Seidler family's contribution to Australia's architectural, intellectual, cultural, and artistic life for almost four decades.
SHR Criteria b) [Associative significance]	State Significance: The Harry and Penelope Seidler House possesses State and local level heritage significance as the principal residence of the pre-eminent Australian modernist architect Harry Seidler AC OBE (25/06/1923 - 9/03/2006) and his wife and professional partner Penelope Seidler (b.15/12/1938). The house designed by the Seidlers in 1966 - 7 is a pure expression of Harry Seidler's modernist methodology and has been the ongoing venue for the Seidlers' contribution to Australia's architectural, intellectual, cultural, and artistic life for almost four decades. Harry Seidler resided at this house from 25 June, 1967, until his death at home on 9 March, 2006, aged 82.
SHR Criteria c) [Aesthetic significance]	State Significance: The Harry and Penelope Seidler House possesses State and local level aesthetic and technical heritage significance as a finely designed and executed example of Modern residential architecture. It is significant aesthetically for the integration of artworks inside and out, examples of modern furniture, and as an accomplished concrete building that dramatises the rugged, sloping nature of its site and the skill with which it adapts the plan and form to the terrain, the projecting terraces and verandahs increasing the spatial depth of the rooms and extending the eye to the surrounds. The house is widely regarded as one of the most outstanding examples of domestic architecture in Australia.
SHR Criteria d) [Social significance]	State Significance: The Harry and Penelope Seidler House is of State and local heritage significance for its association with the architectural profession. The house designed by the Seidlers in 1966-7 is highly regarded as an outstanding work of architecture by the architectural profession and has social significance as a venue for Royal Australian Institute of Architects (RAIA) events and as the principal residence of the architects Harry and Penelope Seidler.
SHR Criteria e) [Research potential]	State Significance: The Seidler House is of State and local heritage research significance for its ability to demonstrate the innovative use of commercial scale structural techniques on a residential design. This is a common feature of Harry Seidler's residential work. In this instance, three concrete block piers support suspended and cantilevered concrete floors, stiffened by rail height parapets, which make possible the long projections. Similar elements acting as sun protection down turns, stiffen the roof slab. The level and type of finishes are consistent with the desire for honest, and wherever possible, natural materials and the need for economic and low maintenance materials.
SHR Criteria f) [Rarity]	State Significance: The Harry and Penelope Seidler House is rare at the State and Local level as it was designed by the architects Harry and Penelope Seidler as their principal residence in 1966-7 and is the only such building in existence. The house through its design, materials, furnishings, art works and occupancy by the Seidler family has an ongoing association with the life and works of Harry and Penelope Seidler. The Harry and Penelope Seidler House is rare at the State level for its ability to demonstrate the innovative use of commercial scale structural techniques in a residential design circa 1966-7.
SHR Criteria g) [Representativeness]	State Significance: The Harry and Penelope Seidler House is of State and local heritage significance as a representative of the body of residential work in the Modern tradition carried out by Harry Seidler during the late 1960s.
Integrity/Intactness:	The building and associated art works have a high degree of integrity as a result of its having remained the Seidlers' principal residence since 25 June, 1967.
Assessment criteria:	Items are assessed against the State Heritage Register (SHR) Criteria to determine the level of significance. Refer to the Listings below for the level of statutory protection.

Procedures /Exemptions

Section of act	Description	Title	Comments	Action date
57(2)	Exemption to allow work	Standard Exemptions	HERITAGE ACT 1977 ORDER UNDER SECTION 57(2) TO GRANT STANDARD EXEMPTIONS FROM APPROVAL I, Penny Sharpe, the Minister for Heritage, on the recommendation of the Heritage Council of New South Wales and under section 57(2) of the Heritage Act 1977: revoke the order made on 2 June 2022 and published in the Government Gazette Number 262 of 17 June 2022; and grant an exemption from section 57(1) of the Act in respect of the engaging in or carrying out the class of activities described in clause 2 Schedule A in such circumstances specified by the relevant standards in clause 2 Schedule A and General Conditions in clause 3 Schedule A. This Order takes effect on the date it is published in the NSW Government Gazette. Dated this 29th day of October 2025 The Hon Penny Sharpe MLC Minister for Heritage For more information on standard exemptions click on the link below.	Nov 7 2025

Standard exemptions for engaging in or carrying out activities / works otherwise prohibited by section 57(1) of the Heritage Act 1977

Listings

Heritage Listing	Listing Title	Listing Number	Gazette Date	Gazette Number	Gazette Page
Heritage Act - State Heritage Register		01793	20 Jun 08	72	5485
Local Environmental Plan	Ku-Ring-Gai Local Environmental Plan 1991		19 Jul 91
Royal Australian Institute of Architects register	List of 20th Century Significant Buildings		30 Oct 93

References, internet links & images

Type	Author	Year	Title	Internet Links
Written	Dobney, Stephen (Editor)	1997	The Master Architecture Series III - Harry Seidler
Written	Apperley, Richard. Irving, Robert & Reynolds, Peter.	1989	A Pictorial Guide to Indentifying Australian Architecture
Written	Harry Seidler and Associates		Original Drawings and Speicifications
Written	Jahn, Graham	1997	Sydney Architecture
Written	Jennifer Taylor	1990	Australian Architecture Since 1960
Written	Kenneth Frampton & Philip Drew	1992	Harry Seidler
Written	Royal Australian Institute of Architects		Architecture in Australia Vol. 57 No. 2
Written	Seidler	1963	scrap book	View detail
Written	Seidler, Harry. Intro by Abel, Chris.		Harry Seidler Houses and Interiors Volume 2

Note: internet links may be to web pages, documents or images.

(Click on thumbnail for full size image and image details)

Data source


The information for this entry comes from the following source:
Name:	Heritage NSW
Database number:	5049861
File number:	EF14/4805; H06/170

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