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Marcroft

A total remodel and extension of a 1960s house,
including an additional open-plan loft floor

Our thoughts

This project involved the careful remodelling and extension of a 1960s family house, responding to the clients’ brief for increased space, improved daylight and a more contemporary way of living. The design focuses on reworking the existing structure to create a series of light-filled, well-connected spaces, while remaining sympathetic to the character of the original building within the streetscene.
A new storey was introduced and the internal layout reconfigured to improve spatial flow and functionality.

The rear elevation was comprehensively reimagined to form the architectural focus of the scheme. A distinctive triangular roof light brings daylight deep into the new open-plan loft space, while refined twin sliding doors strengthen the relationship between the interior and the garden. To enable the addition of a full extra floor, a number of technical constraints needed to be carefully addressed. In particular, it was essential to ensure that the existing structural walls and foundations were not overloaded. A lightweight prefabricated timber attic truss system was therefore selected, minimising additional load while allowing the new storey to be efficiently constructed.

Off-site fabrication improved accuracy and speed of erection, while also reducing costs, proving more economical than a traditional cut roof solution. The project also delivered significant improvements in sustainability. External walls were relined with insulated linings and energy-efficient underfloor heating was introduced, substantially improving the building’s thermal performance. The result is a home that requires fewer natural resources in operation than the original building. The completed project transforms a modest 1960s house into a calm, light-filled and energy-efficient home, carefully designed to support contemporary family life.

Project Details

  • Client: Private
  • Date: 2025
  • Contract Value: £600,000
 
  • Main Contractor: Conerstone
  • Structural Engineer: Graham Daines
  • Lighting and Electrical: rjha Architects


Address

6a Station Parade
London Road
Sunningdale
Berkshire
SL5 0EP

t: 01344 374469
e: email@rjha.co.uk

Affiliations
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