St. Thomas Centre

Design ACB, Hampshire, 2011


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Contemporary glazed extension and to a unique property in historic Winchester city centre involving a hard fought planning consent

This contemporary glazed extension to a unique property in historic Winchester city centre was a hard-fought planning consent involving extensive dialogue with the City of Winchester Trust and local conservation officers.

Appointed by a design-minded client, Design ACB developed plans for a new dining area adjoining the existing kitchen of the 18th century, Grade II listed building together with the refurbishment of other parts of the house. The extension to the property, built on the site of a former church close to Winchester Cathedral, was designed to have a minimal impact on the existing building.

The glazed extension is a simple structure, spanning an existing exterior wall to the rear and a garden wall running parallel to the house. A lean-to roof was removed to allow a clean, simple juncture between the historic fabric and the new roof, exposing the brickwork and opening up the kitchen and dining areas.

Working with Paul Tanner Associates, structural engineers specialising in historic buildings, a series of structural issues with the existing building were overcome, including underpinning of the existing brick party wall.


  • Begun: Aug 2011
  • Completed: Oct 2011
  • Floor area: 8m2
  • Sector: House
  • Total cost: £65,000
  • Funding: Private
  • Tender date: Jul 2011
  • Procurement: JCT MW05
  • Address: St Thomas Street, Winchester, Hampshire, SO23 9HJ, United Kingdom

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