Winchester Traditional Kitchen Extension
Beautiful kitchen extension with modern design and bi-fold doors opening to the garden. This project seamlessly blends contemporary living with traditional Hampshire architecture.
The Brief
Our clients owned a charming three-bedroom detached house in one of Winchester's established residential streets. Like many families in the area, they loved their home and neighbourhood but found the original galley kitchen far too small for a household with two young children. They wanted a generous open-plan kitchen-diner that would become the heart of family life — somewhere they could cook, eat, help with homework and entertain friends, all in one space.
The key challenge was designing an extension that felt like a natural part of this traditional Hampshire property rather than a modern afterthought. Winchester City Council takes design quality seriously, particularly in residential streets with established character, so every detail needed careful consideration.
Our Design Approach
We designed a 25m² single-storey rear extension with a pitched roof that mirrors the proportions of the existing house. The roof pitch and ridge height were carefully calculated to complement the original roofline, while matching clay tiles ensure visual continuity from every angle.
The rear elevation is dominated by a 4-metre-wide set of bi-fold doors in powder-coated aluminium, opening the full width of the kitchen onto the south-facing garden. Two large skylights in the pitched roof flood the deeper parts of the room with natural light, eliminating any sense of being in an extension rather than the original house.
Inside, the layout centres around a generous kitchen island with breakfast bar seating for four. The island provides a natural division between the cooking zone and the dining area beyond, where a family table sits beneath one of the skylights.
Planning and Approvals
This extension fell within Permitted Development rights, so no formal planning application was needed. However, we recommended and obtained a Lawful Development Certificate (£264) to provide our clients with official confirmation — essential for future property sales. Building Regulations approval covered structural calculations for the steel beam spanning the new opening, foundation design, insulation standards and drainage connections.
Key Design Features
- Bi-fold doors: 4-metre-wide aluminium bi-fold doors with a flush threshold for seamless indoor-outdoor flow
- Underfloor heating: Water-fed underfloor heating throughout, eliminating the need for radiators and freeing up wall space
- Skylights: Two large Velux skylights bringing natural light deep into the space
- Kitchen island: Central island with integrated hob, storage drawers and waterfall-edge quartz worktop
- Matching materials: Clay roof tiles and facing bricks selected to complement the original 1960s property
The Result
The completed extension has transformed how this Winchester family uses their home. The open-plan kitchen-diner is now where everyone gravitates — for morning breakfasts, after-school snacks, weekend cooking and evening entertaining. The bi-fold doors open fully in summer, extending the living space into the garden and creating an indoor-outdoor room that works beautifully for Hampshire's warmer months.
Our clients estimate the extension has added approximately £45,000-£55,000 to their property value — a strong return on their investment in one of Winchester's most desirable postcodes.
Cost and Package Guidance
For a 25m² kitchen extension in Winchester, 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 Winchester 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.
Planning Approval Rate
Projects Completed
Years Experience
+ VAT Fixed-Fee Packages
_1763120185017.JPG)
Want Something Similar for Your Home?
Book a complimentary consultation to discuss your extension project. We will assess your property, explain your options and provide a clear fixed-fee price — no obligation, no hidden costs.