
Trevor Dannatt (1920-2021) designed the home for an American shopper to mirror the Californian case-study properties. It sits nestled right into a ‘garden-grab’ web page in Hampstead, north London, the place it had at one level turn out to be nearly misplaced to its overgrown backyard.
Dannatt used to be one of the vital necessary figures in British Modernism, recognized for being one of the crucial designers of the Royal Competition Corridor in London.
It sits in a dip within the highway, at the back of historical oak bushes and tucked between expansive Edwardian villas.
It used to be in the beginning deliberate as a series of pavilions round a central courtyard, all of which had a courting with each and every different and their surrounding gardens and patios. Dannatt conceived it as a chain of courtyards and undulating roofs, drawing sunlight deep throughout the plan in spite of its difficult, slim, north-facing-wedge plot.
After 60 years of constant career, the home had turn out to be beaten via its unruly backyard, whilst a chain of awkward additions had obscured the unique design. It used to be additionally in pressing want of intensive restore and used to be being advertised for demolition.
Coppin Dockray has peeled again those collected Eighties additions to precise the unique checkerboard development of pavilion buildings. Recent extensions were added to create extra space and make stronger the readability of the home, uniting its materiality and shape.
Architect’s view
Our purchasers recognised the original qualities of the construction and sought to give protection to and revive it as a flexible long-term domestic for his or her rising circle of relatives. Their temporary used to be for the home to retain its inconspicuousness amongst its grand neighbours, and to strengthen it towards the weather whilst it won texture and patina with use. The designs have been to be sensible and sturdy, comfy, and non-toxic, with the transparent message: this used to be to not be a show-home.
Restoring Dannatt’s authentic design in complete used to be no longer conceivable. The home were poorly prolonged in 1961 and once more within the Eighties. It used to be slightly insulated; the roof used to be failing; tree roots abutting the home have been undermining the principles; the home windows had rotted.
Our paintings as architects used to be to be as opportunistic as we have been traditionally conscious. We aspired to reimagine the home – with its low-slung stepped plan and staggered courtyards – via a stability of cautious conservation and ambitious however coherent interventions. Regardless of the web page’s restrictions, animated, dappled gentle at all times tracks throughout the internal areas by the use of discreet clerestory home windows, a double-height void or attentively framed window perspectives. For one of these narrow north-facing construction, it enjoys a stunning and loyal in-between high quality – neither ever absolutely internal nor external.
Accommodating a contemporary rising circle of relatives necessitated intensive adaptions. A brand new first surface with further bedrooms and learn changed the Eighties neo-Victorian mansard. The disparate and piecemeal extensions at ground-floor stage have been rationalised to each create a brand new playroom and improve the kitchen’s function as the guts of the home, construction visible bridges to the outdoor in each route. The construction cloth used to be comprehensively upgraded with new bushes home windows, insulated roofs, flooring and partitions, in addition to new products and services, finishes and in moderation crafted joinery.
The fabric possible choices have been consciously restricted, the present brick joined via sweet-chestnut flooring, joinery, and stair. A big ceiling baffle under the brand new rooflight glows lantern-like within the centre of the home. This diminished palette is animated via sunlight filtered via foliage that rakes dynamically around the partitions and flooring to tie in combination the present and new portions of the home with a heat, casual luminosity.
As architects, we approached our job to create a extra sustainable construction in 3 ways: via considerably making improvements to the construction’s thermal efficiency via insulation and air flow; via a cautious number of fabrics; and within the design of a construction made to remaining.
As with maximum properties of this period, the concern used to be to urgently fortify the construction’s thermal efficiency. The 60s construction cloth used to be usually flimsy: brickwork partitions and surface slabs have been uninsulated, roofs contained not more than 25mm of degraded insulation, and most of the a large number of home windows have been single-glazed – some with huge gaps the place frames had rotted away. The Eighties ground-floor extension and first-floor mansard have been poorly built, and the home used to be extraordinarily thermally energetic, uncomfortable on each cold and hot days. A proliferation of thermal chilly bridges exacerbated those issues, as did the antiquated heating gadget.
We labored methodically to fortify the power efficiency. Insulation used to be inserted into present partitions and flooring; new timber-framed home windows with insulating low U and G-value double-glazing have been put in all the way through; all roofs have been stripped – timbers have been reused the place conceivable – and new insulation and roofing fabrics have been put in; new building parts are extremely insulating; and a stack impact has been used to attract air via the home with cross-ventilation alternatives maximised. All present window and door openings have been opened, and insulated hollow space closers have been added. The results of those interventions has led to a 59 consistent with cent development within the construction’s annual CO2 emissions.
Like our purchasers, we have been satisfied that the construction might be preserved and that meticulous new interventions must mirror the brilliance of Trevor Dannatt’s authentic design. The design of the interiors used to be additionally performed via Coppin Dockray to verify the original patinaed and casual qualities are constant all the way through this circle of relatives domestic.
Sandra Coppin and Bev Dockray, administrators, Coppin Dockray
Challenge information
Get started on web page Would possibly 2021
Crowning glory date Would possibly 2022
Gross inner surface space 299m2
Gross (inner + exterior) surface space 337m2
Type of contract or procurement direction Conventional JCT ICD with Contractor’s Design 2016
Development price Undisclosed
Development price consistent with m2 Undisclosed
Architect Coppin Dockray
Shopper Non-public
Structural engineer Structural Design Studio
M&E advisor Jones King
Amount surveyor Stockdale
Interiors Coppin Dockray
Lighting fixtures Lightplan
Arboriculturalist WCEL
Panorama advisor Jane Brockbank Gardens
Acoustic advisor Hann Tucker
Essential fashion designer Coppin Dockray
Licensed construction inspector Shore
Major contractor Sherlock London
Cladding sub-contractor Millimetre
CAD device used Vectorworks
Design existence 50 years
Predicted annual CO2 emissions 25.05 kgCO2/m² (60.76 kgCO2/m² ahead of retrofit which means a 58.7 consistent with cent development in CO2 emissions)