The extension in the photo at the top of this page was built in Westcroft. 9 metres wide. 3.3 metres deep. Full ground-floor underfloor heating. Premium aluminium bi-fold doors opening directly to the garden. A luxury kitchen that the client describes — in their own words on video — as transforming the way the family uses the house. It is one of the finest projects we have completed in twenty years of working across Milton Keynes.
We mention it first because Westcroft is exactly the kind of area where this level of result is achievable. The 1980s and 1990s detached homes that make up much of the neighbourhood sit on generous plots with good rear garden depth. The housing stock is well maintained. And the homeowners here consistently arrive at the same conclusion — the house is good but the ground floor does not work the way a modern family needs it to. A rear extension is the answer most of them are looking for.
What Makes Westcroft Well Suited to Extensions?
Westcroft sits between Furzton and Shenley Brook End in the south-west of Milton Keynes. The detached homes that make up a significant proportion of the area have rear gardens that give genuine scope — not just for a modest single storey addition but for projects of the scale we completed here. Bi-fold doors at 9 metres wide require a rear wall of that width to open onto. Most Westcroft detached plots can accommodate it.
Semi-detached properties in Westcroft are equally well suited to extending — a single storey rear addition that creates a connected kitchen and dining space is the most common brief we receive across the south-west MK area. Most fall within Permitted Development with no planning application required.
Planning Permission in Westcroft
Most single storey rear and side extensions in Westcroft fall within Permitted Development. Detached houses can extend up to 4 metres to the rear without a planning application. Semi-detached properties are permitted up to 3 metres. We confirm your exact position at the initial site visit before any design work begins. Read our full guide on planning permission for home extensions in Milton Keynes.
What Does a Home Extension Cost in Westcroft?
The cost depends on size specification and the specifics of your plot. The Westcroft project — 9m × 3.3m with underfloor heating and premium bi-fold doors — represents the upper end of what a single storey rear extension can be. A more standard rear extension of 20 to 25 square metres sits at a different price point entirely. We provide a fixed price agreed in writing before work starts — no variations through the build. See our full home extension cost guide for Milton Keynes.
See the Project and Hear From the Client
The Westcroft luxury rear extension has 13 photos and a customer video testimonial. The client talks through the process from initial contact through to completion. It is worth watching before you speak to any builder — not because it sells CBS but because it gives an honest account of what the experience of a well-run extension project actually feels like.
Next Step
We offer a free no-obligation site visit to every Westcroft homeowner considering an extension. We look at the property assess the ground confirm your planning position and give you an honest picture of what is possible before you commit to anything.
Get in touch today to arrange your free consultation.