The Brief

Our clients in Bishops Waltham owned a period property within the town's conservation area. The house had tremendous character — exposed beams, original fireplaces, uneven floors that tell the story of centuries of family life — but the kitchen was a cramped 1970s addition that did the rest of the house a disservice. They wanted to replace it with something that respected the building's heritage whilst providing a functional family kitchen.

Our Design Approach

Working within a conservation area demands a different design philosophy. Rather than trying to hide the extension, we designed a 28m² addition that is clearly of its time but deeply respectful of the original building. The form is simple — a single-storey lean-to with a steeply pitched roof — using locally sourced red brick laid in a traditional Flemish bond and handmade clay roof tiles.

The key design move was the connection between old and new. A wide opening framed with reclaimed oak beams links the extension to the original house, creating a visual and physical bridge between the centuries. Inside, the kitchen uses plain painted timber units that reference the Shaker tradition without pastiche, paired with oak worktops that echo the original beams visible throughout the house.

Planning and Approvals

Conservation area applications require additional supporting information, including a heritage impact assessment explaining how the proposals affect the character and appearance of the area. We prepared detailed drawings showing the extension in context, with material samples and precedent photographs demonstrating our approach. Winchester City Council's conservation officer was supportive throughout, and planning permission was granted within the standard 8-week period.

Key Design Features

• Heritage compliance: Full compliance with conservation area policies and heritage best practice
• Traditional materials: Locally sourced brick, handmade clay tiles, reclaimed oak beams
• Oak beam threshold: Reclaimed beam framing the opening between old and new
• Sympathetic kitchen: Plain painted timber units with oak worktops respecting the building's character
• Character retention: Original features preserved and celebrated in the redesigned layout

The Result

The completed extension demonstrates that sensitive design in conservation areas does not mean compromising on functionality. The new kitchen is spacious, light and practical — everything a modern family needs — whilst sitting entirely comfortably alongside the original 17th-century structure. The heritage officer who visited post-completion described it as "exactly the kind of thoughtful addition we hope to see in Bishops Waltham."

Cost and Package Guidance

For a 28m² heritage extension in Bishops Waltham, the biggest budget variables are usually structural steelwork, glazing specification, drainage changes, foundation conditions and final kitchen, bathroom or joinery choices. Hampshire Build's fixed-fee design packages give homeowners clear design-cost certainty before construction begins, with Essential, Pre-Build and Premium options depending on how much technical documentation and contractor support is needed. The design fee is separate from builder costs, planning fees, Building Control fees and any third-party specialist reports, so clients can make informed decisions without confusing design work with the wider construction budget.

Local Context and Practical Considerations

Projects in Bishops Waltham benefit from early attention to neighbouring amenity, overlooking, daylight, access for builders and material choices that sit comfortably with the existing street scene. On this project, the drawings needed to communicate not only the look of the extension but also how it would work technically: roof drainage, insulation build-ups, structural openings, floor levels and practical circulation through the home. That level of detail helps planning officers, Building Control and builders understand the proposal clearly, reducing avoidable questions and giving the homeowner a stronger basis for the next stage of their extension journey.

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