Duncan House, Castlecrag
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''Duncan House'' is a
heritage-listed This list is of heritage registers, inventories of cultural properties, natural and human-made, tangible and intangible, movable and immovable, that are deemed to be of sufficient heritage value to be separately identified and recorded. In ma ...
residence located at 8 The Barbette,
Castlecrag Castlecrag is a suburb on the lower North Shore of Sydney, in the state of New South Wales, Australia 8 kilometres north of the Sydney central business district, in the local government area of the City of Willoughby. Castlecrag is ...
,
New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...
, a suburb of
Sydney Sydney is the capital city of the States and territories of Australia, state of New South Wales and the List of cities in Australia by population, most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Syd ...
, Australia. It was designed by
Walter Burley Griffin Walter Burley Griffin (November 24, 1876February 11, 1937) was an American architect and landscape architect. He designed Canberra, Australia's capital city, the New South Wales towns of Griffith, New South Wales, Griffith and Leeton, New So ...
. It is also known as Duncan House Number 2. It was added to the
New South Wales State Heritage Register The New South Wales State Heritage Register, also known as NSW State Heritage Register, is a heritage list of places in the state of New South Wales, Australia, that are protected by New South Wales legislation, generally covered by the Heritag ...
on 2 April 1999.


History


Walter Burley Griffin (1876-1937)

Walter Burley Griffin was born near Chicago and trained at Nathan Ricker's School of Architecture at the University of Illinois, graduating in 1899. From 1901-1906, he worked as an associate of
Frank Lloyd Wright Frank Lloyd Wright Sr. (June 8, 1867 – April 9, 1959) was an American architect, designer, writer, and educator. He designed List of Frank Lloyd Wright works, more than 1,000 structures over a creative period of 70 years. Wright played a key ...
at Oak Park. Griffin started his own practice in 1906 and within a few years established his reputation as an architect of the Prairie School. In 1911, Griffin married Marion Mahony, who had graduated in architecture from the Massachusetts Institute of Technology and worked as Wright's head designer.Jahn, 1997, p. 221 Inspired by the designs by Frederick Law Olmsted (often called the founder of American landscape architecture) of New York's Central Park and his "green necklace" of parks in Boston, landscape design was the career Walter Burley Griffin would have pursued had the opportunity offered. He had approached Chicago landscape gardener Ossian Cole Simonds for career advice before entering the University of Illinois in 1895. Apparently unsatisfied with the lack of relevant curriculum, Simonds urged him to pursue architecture and study landscape gardening on his own, as he himself had done. Griffin took what classes he could and, like Simonds and landscape gardener Jens Jensen, shared an approach to landscape design through architecture, an interest in civic design, urbanism and planning. In 1902 there were only six "landscape gardeners" (and no landscape architects) listed in the Lakeside Annual Directory of the City of Chicago.Chicago Directory, Chicago, 1902 pp 24, 35, 47 In 1912 only two landscape architects and 13 landscape gardeners were listed.Chicago Directory, Chicago, 1902 pp 1552 & 1693 Griffin's practice as a landscape architect was first featured in a public text in Wilhelm Miller's The Prairie Spirit in Landscape Gardening (1915), which included Griffin as an exponent (along with Jensen, Simonds and architect Frank Lloyd Wright) of his proposed American regional "Prairie" style. Simonds, Griffin and Miller had all attended the first national meeting of the American Society of Landscape Architects (ASLA) in 1913 in Chicago. By 1914 Griffin and his architect wife Marion Mahony had moved to Australia after winning the 1912 international design competition for the Federal Capital,
Canberra Canberra ( ; ) is the capital city of Australia. Founded following the Federation of Australia, federation of the colonies of Australia as the seat of government for the new nation, it is Australia's list of cities in Australia, largest in ...
with a scheme based on its topography, a distinctly non-prairie valley landscape of undulating hills.Stuart Read, in http://www.griffinsociety.org.au/lives and works/landscape_architecture cited 21 November 2008 This was a project they had worked on together.Jahn, 1997, p.221 By 1919, there were problems with the Canberra project and Griffin resigned his position as Federal Capital Director of Design and Construction. He then formed the Greater
Sydney Sydney is the capital city of the States and territories of Australia, state of New South Wales and the List of cities in Australia by population, most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Syd ...
Development Association to purchase in
Middle Harbour Middle Harbour (or ''Warrin ga''), a semi-mature tide dominated drowned valley estuary, is the northern arm of Port Jackson, an inlet of the Tasman Sea located north of Sydney central business district on the coast of New South Wales, Australi ...
, which became known as Castlecrag. He devoted the next fifteen years to developing and promoting the area, while maintaining an architectural practice. Griffin believed dwellings should play a subordinate role in the scheme of nature. His houses were small and intimate. He aimed toward the most natural use of land and the selection of indigenous plants. He also developed an economical construction system of pre-cast interlocking structural tiles, which he called "Knitlock", and used it widely, as well as stone, in the houses of Castlecrag. In the early 1930s, Griffin built incinerators for the destruction of household garbage in various cities and suburbs in the eastern states of Australia. They provided a canvas for experimentation with form and texture for the architect, but sadly few have survived. Two Griffin incinerators survive in suburban Sydney: the
Glebe A glebe (, also known as church furlong, rectory manor or parson's close(s)) is an area of land within an ecclesiastical parish used to support a parish priest. The land may be owned by the church, or its profits may be reserved to the church. ...
Municipal Incinerator (
City of Sydney The City of Sydney is the Local government in Australia, local government area covering the Sydney central business district and surrounding inner city suburbs of the Greater Sydney, New South Wales, Australia. Established by Act of Parliament ...
Local Environmental Plan 2000 local heritage item); and the Walter Burley Griffin Incinerator, Willoughby (State Heritage Register (SHR) listing #84). Griffin's work took him to India in 1935 and he died there two years later of peritonitis. Griffin's contribution to the development of the Wrightian / Prairie School style internationally has begun to receive attention from architectural historians in recent years. It is now increasingly acknowledged that Griffin contributed a number of fresh concepts to the Prairie School, most noticeably: his attention to vertical space (a development leading directly to the ubiquitous split-level style post-war houses); "open plan" living and dining areas dominated by a large central fireplace; and the extensive domestic use of reinforced concrete.Kirk, Andrew, "Prairie School Connection", cited 3 December 2007 Griffin is also internationally renowned for his work as a landscape architect, especially the innovative town planning design of Canberra and Castlecrag,
Griffith Griffith may refer to: People * Griffith (name) * Griffith (surname) * Griffith (given name) Places Antarctica * Mount Griffith, Ross Dependency * Griffith Peak (Antarctica), Marie Byrd Land * Griffith Glacier, Marie Byrd Land * Griffith Ridge, ...
and Leeton. Griffin's design approaches to landscape and architecture informed one another. Landscape itself, for example, crucially served as a basis for architecture - a conviction first made explicit in the Canberra publicity, Griffin noting (in Chicago) that: "...a building should ideally be "the logical outgrowth of the environment in which
t is T, or t, is the twentieth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''tee'' (pronounced ), plural ''tees''. It is d ...
located"." In Australia, he hoped to "evolve an indigenous type, one similarly derived from and adapted to local climate, climate and topography." In Australia the scale and number of his landscape commissions grew considerably, including a number of town plans. Griffin signed many of his drawings with the term "landscape architect".


Background and vision

Walter Burley Griffin and Marion Mahony Griffin came to Sydney in 1920 following his seven years overseeing the building of the nation's Federal Capital at Canberra, during which time they lived primarily in
Melbourne Melbourne ( , ; Boonwurrung language, Boonwurrung/ or ) is the List of Australian capital cities, capital and List of cities in Australia by population, most populous city of the States and territories of Australia, Australian state of Victori ...
. They had come to Australia after he won the capital design competition of 1912, this being a project they had worked on together. In the USA the Griffins had both worked for Frank Lloyd Wright. Marion was known for her drawings and interiors while Walter had become a respected practitioner of the organic architecture later known as the Prairie School.Australian Dictionary of Biography, 2006 For the north shore of
Sydney Harbour Port Jackson, commonly known as Sydney Harbour, is a ria, natural harbour on the east coast of Australia, around which Sydney was built. It consists of the waters of Sydney Harbour, Middle Harbour, North Harbour and the Lane Cove River, Lane ...
the Griffins envisaged a communal, ideal community without fences, without steeply pitched red roofs, and without the grid pattern which dominated the landscape in most of Sydney's suburbs. Mahony and Burley Griffin were visionaries and followed philosophical-spiritual movements such as Theosophy and Anthroposophy (Australian Dictionary of Biography). With a group of people, they formed the Greater Sydney Development Association (GSDA). In 1921 this group (GSDA) purchased of undeveloped land along the waterfront of present-day Castlecrag, Castle Cove and Middle Cove.Walter Burley Griffin Society 2006 Here the Griffins could design their community with curving roads following the sandstone topography. Griffin had extensive experience at town planning, having designed estates and developed suburban areas in the United States as well as plans for other Australian towns. They names the roads of the Castlecrag subdivision after parts of castles. Scottish castle themes in the area were already evoked in the Gothic stone bridge, built 1892, between the suburbs of
Cammeray Cammeray is a residential suburb on the Lower North Shore region of Northern Sydney and is part of the North Sydney Council local government area. History Aboriginal culture Cammeray takes its name from the Cammeraygal people, an Aboriginal ...
and Northbridge, and at the previously named "Edinburgh Rock" on the Castlecrag peninsula.


Indigenous background

The indigenous people of the area were Kurinngai or Gurinngai speaking groups, probably affiliated with the nearby Cammeraigal community or the Gorualgal settlement at Fig-Tree Point close to Middle Harbour.Barani Indigenous History 2006 Kurinngai groups lived for thousands of years successfully utilising and managing the area's rich resources of fish, mammals, birds and vegetable products. Kurinngai communities suffered from colonial diseases such as smallpox, and drastically lost population after the arrival of Anglo-Europeans in 1788. Reminders of the Kurinngai's original occupation are evident in the landscape around Middle Harbour: middens, scarred trees, initiation sites, and especially dramatic rock carvings. The government took over traditional Aboriginal land and eventually sold it as land grants. Some Kurinngai survivors may have integrated with colonial society.
Governor Macquarie Major General Lachlan Macquarie, CB (; ; 31 January 1762 – 1 July 1824) was a British Army officer and colonial administrator from Scotland. Macquarie served as the fifth Governor of New South Wales from 1810 to 1821, and had a leading role ...
established "
Bungaree Bungaree, or Boongaree ( – 24 November 1830), was an Indigenous Australian man from the Broken Bay region north of Sydney, who was known as an explorer, entertainer, and Aboriginal community leader.Barani (2013)Significant Aboriginal People ...
's Farm" at Middle Head not far from Castlecrag to introduce indigenous people to European farming. Up until 1879 an Aboriginal group was living at the west side of
Circular Quay Circular Quay is a harbour, former working port and now international passenger shipping terminal, public piazza and tourism precinct, heritage area, and transport node located in Sydney, New South Wales, Australia, on the northern edge of the ...
, but at that time the people were relocated to La Perouse.


Castlecrag building

The north shore of the Harbour was more lightly populated by settlers than the Sydney side. It was unsuitable for grazing, and the rocky terrain around Middle Harbour probably was deemed difficult to build on. The Griffins' plans included retaining natural landforms and Australian bush plants, and planting additional native flora. Roofs were to be low, and views of the harbour maximised from all areas. Communal walkways and reserves were included, and community activities such as dance classes, concerts and neighbourhood meetings were encouraged. The Griffins lived in Castlecrag from 1924 to 1936. Designs within the estate had to have GSDA approval and Walter Burley Griffin designed the majority of them. Banks would not lend for his designs which made construction of the dream community difficult, and less than two dozen houses out of potentially several hundred were realised in the planned form.Birrell 1964 Apparently only thirteen houses remain. The design of the houses emphasised use of stone and sand-coloured concrete, mostly low to the ground, mimicking and complementing natural earth forms. Griffin patented a material called knitlock concrete which is used in the Duncan House. It was manufactured locally, in moulded sections which join together in a kind of jigsaw fitting. Apparently the Duncan House, being the last Griffin designed house in Castlecrag to be built, benefitted from a later advancement of knitlock technology which included the galvanising process (zinc coating) in its iron-steel reinforcement. This technology contributed to its long-term success compared to some of the other houses which were built in the Castlecrag Estate between 1922 and 1934.Heritage Office file During his time at Castlecrag Griffin was known for his design of many municipal incinerator buildings, executed with grand and monumental flourishes. Following 1935, Walter and Marion moved to India where he designed and built several buildings. He died there in 1937. Marion returned briefly to Castlecrag then to the United States.


The Duncan House Plan

The Duncan House was built for Mr and Mrs Frank and Anice Duncan who had lived in other Griffin designed houses. Initially they purchased Lot 190 and commissioned a design for a split level stone house. The cost looked too high so they exchanged the lot for Lot 194 and the present house was built.Walter Burley Griffin Society News, October 1994. The design of the house played on gothic castle themes. Mr Duncan the original owner lived in the house for over 50 years until 1989. The Depression had its hold over New South Wales in the 1930s. The square plan Duncan House followed Griffin's composition idea of a house as a nucleus which could be added to as financial strain was eased. Over the decades Frank Duncan and his family added some extensions to suit their needs: a bedroom, a garage, and loggia (outdoor covered patio area), modest in scale, and in materials harmonising with the original house.


Duncan House leads to founding of the Walter Burley Griffin Society

Frank Duncan was an active member of the local community. He was a long term president of the Progress Association in the 1940s. He and his wife Anice worked with other community members to help establish the Castlecrag Kindergarten, and they were prominent members of the Bushwalkers Association.Walter Burley Griffin Society News Update October 1994 Their shared interest in bushwalking led them to close association with the Griffins. When Mr Duncan revealed in 1988 that he was intending to sell the house and move, the local community wished to preserve his house as a house museum. Mr Duncan supported the idea, and government bodies gave indications that if a locally formed group would operate the museum, then funds could be made available for its purchase.Walter Burley Griffin Society News April 1990 The house received an Interim Conservation Order in 1989. Thus the Duncan House was the inspiration for the formation of The Walter Burley Griffin Society Incorporated. The house was felt to be possibly the best preserved of Griffin's surviving houses. It was unpainted, and the kitchen and bathroom were original. At auction time, funds were not available for its purchase after all and the house sold to a private owner. The Society went on to achieve other successes, substantially raising awareness of the work of Walter Burley Griffin and Marion Mahony Griffin. A drawing of the Duncan House, by John Llewellyn, features on the masthead of the Society Newsletter. A Permanent Conservation Order was placed on the house in 1993. New extensions have been added to the house following that date. A number of elements of Mr Duncan's house as he left it in 1989 have been modernised. In the 1990s Willoughby Local Government Area designated the Griffin Conservation Area which includes the area of the Duncan House.


Description


Setting

The original house was set at the back of the block, adjoining a reserve. According to the Walter Burley Griffin Society, and thesis extracts from Andre Perl, the Duncan house forms part of a group of three Griffin-designed houses at The Barbette. The other two are the Wilson and Creswick houses, No. 2 and No. 4. The three were designed with staggered settings to allow views of Middle Harbour. The Duncan House had access to the roof from the garden and views were enjoyed from there during Mr Duncan's residency until 1989.


Materials

The house is single storey, built of stone blocks and "knitlock" concrete blocks. The knitlock is reinforced with galvanised iron/steel, the galvanising being a late development in knitlock reinforcing. Burley Griffin's design was a small house with a square plan. Corner
piers Piers may refer to: * Pier, a raised structure over a body of water * Pier (architecture), an architectural support * Piers (name), a given name and surname (including lists of people with the name) * Piers baronets, two titles, in the baronetages ...
of rock faced
sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
rubble, squared and coursed, contrast with recessed walls of smooth dressed concrete blocks of a sandstone-gold colour (finished with grains of sandstone). The roof is flat with no
eaves The eaves are the edges of the roof which overhang the face of a wall and, normally, project beyond the side of a building. The eaves form an overhang to throw water clear of the walls and may be highly decorated as part of an architectural sty ...
, and the window openings are rectangular with painted timber framing. Paired
casement window A casement window is a window that is attached to its frame by one or more hinges at the side. They are used singly or in pairs within a common frame, in which case they are hinged on the outside. Casement windows are often held open using a c ...
s with large panes of rhomboid shaped glass, and
french doors A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a ''doorway'' or ''portal''. A door's essential and primary purpose is to provide securit ...
with panes of the same design open to the garden. Closeness to the garden and nature were integral elements of the house design, and Walter Burley Griffin himself contributed specimens of Australian flora for planting throughout Castlecrag.Birrell 1964:137


Style

The knitlock wall sections have curved ribbing similar to vertical fins, which are accented by ribbed concave crenellations. The crenellated
parapet A parapet is a barrier that is an upward extension of a wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian ''parapetto'' (''parare'' 'to cover/defend' and ''petto'' 'chest/brea ...
elements rise gracefully and monumentally above the roofline, bringing a castle or church-like suggestion to the exterior through gothic style elements. The 70 degree angled window pane settings create
chevron Chevron (often relating to V-shaped patterns) may refer to: Science and technology * Chevron (aerospace), sawtooth patterns on some jet engines * Chevron (anatomy), a bone * '' Eulithis testata'', a moth * Chevron (geology), a fold in rock la ...
patterns on the french doors and windows, adding further decorative interest to the facade, and reminiscent of a pointed arch motif (another gothic style marker). Chevron motifs and vertical fins are also characteristic of the Inter War Art Deco style, but Burley Griffin's use of rusticated stone and his philosophy of creating a building in harmony with the landscape resulted in a fusion of grace with earthy ambience at the Duncan House.


Interior

The interior has timber floors which are laid on a prepared subloor surface to Griffin's specification. Interior walls are unlined rock-faced stone at the corners to original square building, and smoother concrete knitlock blocks in the remaining walls. Ceilings are plaster lined and were originally painted white, but are now an ochre colour. According to James Birrell's book, the small scale of the Duncan House achieved a large scale interior through the use of folding doors, which could join smaller rooms into a larger living area.Birrell, 1964:141. The building has a square bedroom extension added to the rear of the house, designed by Eva Buhrich and sympathetically constructed in 1943 from unpainted blocks of concrete with plain painted timber window frames. In the early 1990s, the windows were replaced with new ones matching the Griffin chevron design. A simple fireplace was situated in the corner of the living area. It utilised the rock faced stone as a hearth wall, and had a rough stone mantel. The original bathroom had green fittings that were in situ in 1989, but were replaced in 1993. The original bathroom floor tile - a mosaic - was also replaced in 1993. The kitchen sink is a double bowl style made of zinc and it and the original kitchen cabinetry remain intact. The flooring in the kitchen was replaced in 1993.


Deterioration

The
flat roof A flat roof is a roof which is almost level in contrast to the many types of List of roof shapes, sloped roofs. The slope of a roof is properly known as its Roof pitch, pitch and flat roofs have up to approximately 10°. Flat roofs are an anci ...
was made from poured concrete. Water drained into internal downpipes. These leaked internally, and water also damaged the crenellations and elements of the exterior. Extensive repairs were carried out in 1993 in the original Griffin house and 1943 extension due to leaks having caused water damage to stone, concrete and timber. In order to safeguard the structural integrity of the roof, a steel structure was constructed inside the house to hold it up and a new ceiling attached to its underside. A slightly sloped metal roof was constructed in 1993 discretely on top of the original concrete roof to protect the house from continued issues with rain ingress. The house remains watertight. The current windows are replacements to the same design as the originals.


Recent works

The non-Griffin designed garage and
loggia In architecture, a loggia ( , usually , ) is a covered exterior Long gallery, gallery or corridor, often on an upper level, sometimes on the ground level of a building. The corridor is open to the elements because its outer wall is only parti ...
built post World War II from rock faced stone blocks, which were extant at the front or street-side of the Duncan house in 1989, were built close to the excavated earth of the slope. The additions to the house from have been built in the place of the old garage and loggia. The extension brings the house forward toward the street, and the
carport A carport is a covered structure used to offer limited protection to vehicles, primarily cars, from rain and snow. The structure can either be free standing or attached to a wall. Unlike most structures, a carport does not have four walls, and u ...
fronts onto the street. The extension and carport have been designed with reference to the original house, using a flat roof, protruding block corners, smooth walls recessed from the block-like corner piers, and chevron motif french doors. The walls are rendered and painted a sandstone colour.


Condition

As at 6 October 2006, at the date of listing, the house's walls were stained with dark patches. Some roofline crenellations were missing and mortar loss from joints was evident.Timber frames were rotting, and the roof was leaking. Corrosion to the reinforcing bars of the roof slab was diagnosed. Remedial works have ameliorated some of these problems.


Modifications and dates

*1934 - House built. *1943 - Bedroom extension added, designed by architect Eva Buhrich. *?- Loggia and garage added. * - Door and window timber of original house replaced to original design. *1993 - Planning permission given for demolition of loggia and garage, new extensions to replace them. Leaks remedied.


Heritage listing


Historical significance

As at 6 October 2006, the Duncan House at Number 8 The Barbette, Castlecrag, is historically significant as a fine example of the work of Walter Burley Griffin, an internationally significant architect. It is historically important as one of the original houses in the Castlecrag area, which were all built in the 1920s-1930s. It is rare as one of thirteen surviving examples. It is representative of the planning concepts by Walter Burley Griffin and Marion Mahony Griffin who initiated the Castlecrag community, where they planned houses to be built of local sandstone and locally made concrete resembling the stone, in sympathy with natural topographical forms and Australian flora.


Aesthetic and technical significance

The house has aesthetic and technical significance, embodying the materials and planning vision of Walter Burley Griffin and Marion Mahony Griffin. The house is a diminutive yet perfectly proportioned example of W B Griffin's work, using his patented knitlock concrete, ribbed and gracefully crenellated, yet grounded in the earth through the use of heavy rusticated protruding stone corner piers. The unique roofing and flooring systems also sat the house closer to ground level than more commonly elevated houses. The house is technically unusual and significant, being the last Griffin-designed house to be built in Castlecrag, and exhibiting a form of knitlock benefitting from the introduction of galvanising for its steel reinforcing. The Duncan House is aesthetically significant for blending with its setting, situated below a slope and backing onto a reserve. The chevron motif french doors open to the garden in close proximity, modeling methods of home building several decades ahead of later popular trends.


Social significance

The house has social significance for being associated with the Griffins who also lived in the Castlecrag community, and for being the home for over 50 years of Mr Frank Duncan. Duncan and his wife Anice commissioned the house and were associates of the Griffins.They were active community members valued by the community (present and past). When Mr Duncan planned to move away from the house in 1988, he indirectly inspired the formation of the Walter Burley Griffin Society. The house had significance with many original finishes and forms intact and the local community wished to preserve it as a house museum. They were unsuccessful but the house has social significance for having inspired the work of the Society who have subsequently contributed to the appreciation and understanding of the Griffins' vision and importance. Duncan House was listed on the
New South Wales State Heritage Register The New South Wales State Heritage Register, also known as NSW State Heritage Register, is a heritage list of places in the state of New South Wales, Australia, that are protected by New South Wales legislation, generally covered by the Heritag ...
on 2 April 1999 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. The Duncan House in Castlecrag is historically significant as one of Walter Burley Griffin's designed houses constructed of local stone and knitlock concrete. The Griffin-conceived Castlecrag area subdivision is historically significant at state level for its innovative goal of working with natural landforms and flora rather than against them. The estate left a legacy of four miles of conserved harbouside foreshore in the Willoughby Local Government area. The estate is historically significant as the home of Walter Burley Griffin and Marion Mahony Griffin who lived there approximately 1924-1936. The place has a strong or special association with a person, or group of persons, of importance of cultural or natural history of New South Wales's history. The house is significant for its association with the work of Walter Burley Griffin and Marion Mahony Griffin, architects of national and international significance. Griffin was the designer of Australia's capital in Canberra, as well as dwellings and public buildings in Melbourne, Sydney, the United States and India. Griffin was personally associated with the house as well as professionally, being an associate of Mr Duncan and a member of the Castlecrag residential community. The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. The house is aesthetically significant as a visually delightful and intact at date of listing interpretation of Walter Burley Griffin's vision for buildings in the Castlecrag area. The original house sits modestly in harmony with nature. Frank Duncan left the house in 1989 with original forms and finishes intact, plus several additions of his own.The house is technically significant for its use of Griffin-patented knitlock concrete in combination with stone. The place has a strong or special association with a particular community or cultural group in New South Wales for social, cultural or spiritual reasons. The Duncan House is socially significant as the house which inspired formation of the Walter Burley Griffin Society Inc. The house is socially significant as the home for over 50 years of an associate of Walter Burley Griffin, Frank Duncan, who commissioned the house. Mr and Mrs Duncan were active and valued community members and the house has social significance as a link to the original Castlecrag community and to the current local community who remember them. The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales. The house at Number 8 The Barbette has potential to yield information about atypical construction methods of the 1930s. The use of knitlock concrete, the laying of floors onto a prepared earth surface, the flat concrete roof and other Griffin innovations could yield information about the construction techniques and the preservation and wear of these unusual elements. The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales. The house is a rare example of a surviving Griffin-designed house in the Castlecrag area. It is the last Griffin-designed house to be constructed in Castlecrag and is a rare example of knitlock reinforced with galvanised steel. The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in New South Wales. The Duncan House is representative of the work of architect Walter Burley Griffin. The house is an excellent example of the houses designed by Griffin in the area of Castlecrag where Griffin and his wife Marion Mahony Griffin envisaged and implemented a community living together and supporting each other in buildings subordinate to nature not dominant over it.


See also

*
Australian residential architectural styles Australian residential architectural styles have evolved significantly over time, from the early days of structures made from relatively cheap and imported corrugated galvanised iron, corrugated iron (which can still be seen in the roofing of ...


References


Bibliography

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Attribution

{{NSW-SHR-CC, name=Duncan House, dno=5045177, id=00742, year=2018, accessdate=2 June 2018 New South Wales State Heritage Register Castlecrag, New South Wales Houses in Sydney Articles incorporating text from the New South Wales State Heritage Register Houses completed in 1934 1934 establishments in Australia Walter Burley Griffin buildings