Home extensions in Uxbridge
Every type of house extension in Uxbridge, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsHA4, UB4, UB7, UB8, UB10, UB11
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Uxbridge houses?
In London, space is at a premium and gardens are often short, so side returns, wraparounds and carefully planned rear extensions tend to make the most of every metre.
The types we would usually look at first for a home in Uxbridge are side return extensions, kitchen extensions and glass box extensions, depending on the garden and how the house is laid out.
What extensions cost in Uxbridge
We publish guide prices so you can budget before anyone visits. For Uxbridge they are adjusted by ×1.3, the factor we use across London.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
Areas we cover around Uxbridge
Postcode districts we cover around Uxbridge include HA4, UB4, UB7, UB8, UB10, UB11. The same team covers Ruislip (3 miles), South Ruislip (3 miles), Hayes (Hillingdon) (3 miles), Northolt (5 miles), Pinner (5 miles), all within easy reach. For homes towards Buckinghamshire, Gerrards Cross is around 4 miles away.
Planning rules in Uxbridge
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
All extension types we build in Uxbridge
- Side return extensions · from £23,000
- Single-storey rear extensions · from £27,000
- Bungalow extensions · from £34,000
- Side extensions · from £28,500
- Extensions over a garage · from £31,000
- Planning permission for extensions · from £450
- Orangery extensions · from £39,000
- Building regulations for extensions · from £1,150
- Flat roof extensions · from £27,000
- Glass box extensions · from £39,000
- Conservatory replacement extensions · from £26,000
- Annexe extensions · from £71,500
- Wraparound extensions · from £46,500
- Home office extensions · from £20,500
- Double-storey extensions · from £49,000
- Extension plans and drawings · from £1,550
- Kitchen extensions · from £35,000
- Timber frame extensions · from £27,000
- Utility and boot room extensions · from £18,000
- Porch extensions · from £5,200
- Pitched roof extensions · from £28,500
- Bedroom extensions · from £33,500
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Uxbridge
How much does an extension cost in Uxbridge?
Using our London factor (×1.3), a standard-spec single-storey extension of 20 m² is a guide £53,000 to £68,000 including VAT, and a 32 m² two-storey extension £74,500 to £98,000. Your written price follows the survey.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Uxbridge, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Uxbridge?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Book a free site visit in Uxbridge
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.