Exterior of extension and remodelling of a large 1970s house Porter Leake House at night

Garden view of extension and remodelling of a large 1970s house Porter Leake House

Terrace view of extension and remodelling of a large 1970s house Porter Leake House

Exterior of extension and remodelling of large 1970s house Porter Leake House with countryside views

Living room of extension and remodelling of large 1970s house Porter Leake House with countryside views

Bathroom of extension and remodelling of large 1970s house Porter Leake House

Bathroom of extension and remodelling of large 1970s house Porter Leake House with view of pool

Folding kitchen terrace doors of extension and remodelling of large 1970s house Porter Leake House

Kitchen of extension and remodelling of large 1970s house Porter Leake House

Bedroom of extension and remodelling of large 1970s house Porter Leake House

Porter Leake
Extension & remodelling of a large 1970s house near Winchester

The Porter Leake House was a 1970s house, partially built into a hillside at Twyford Downs, near Winchester, and within the South Downs National Park which has been transformed through significant remodelling and extension into a free-flowing contemporary home for a family of six with an aspiration for long-term multi-generational living. jpa's design introduced a glazed master bedroom extension to the south, dramatically oversailing the swimming pool terrace. The living room was extended to the west to maximise views out over the garden and the River Itchen SSSI beyond.

Externally the roof profile was extensively remodelled and covered with standing-seam black zinc. The existing unattractive facing brickwork was overclad in locally coppiced sweet chestnut to the garden elevations and with insulated render to the entrance courtyard to create an up-to-date, low-maintenance house. The glazing was replaced by low u-value alu-timber composite double or triple glazed windows and low-profile underfloor heating designed for retrofit applications was installed throughout.

Design: John Pardey Architects

Project architect: Ralph Kent

Main contractor: Andrews Building

Structural Engineer: Lyons O'Neill

Landscape Architect: Nicholas Dexter Landscape Design

Kitchen: Kraftwork

Roof Material: VM ANTRA-ZINC

Roof installation: GSL Southern

Glazing: VELFAC

Rooflights: The Rooflight Company & Whitesales

Underfloor heating: nu-heat

Floor tiles: Domus Tiles