Home extensions in Heston
From a small utility to a two-storey addition, we take on house extensions throughout Heston, starting with a free visit and a planning check.
- Postcode districtsTW3, TW4, TW5, TW7, UB1, UB2
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Which extension suits a Heston home?
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.
Start by comparing side return extensions, glass box extensions and wraparound extensions: between them they cover most of the layouts we see requested for houses like these.
Do extensions in Heston need planning permission?
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 return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Popular extension prices in Heston
Every figure below is a guide for Heston, adjusted for London build costs (×1.3) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
Covering Heston and nearby
Across TW3, TW4, TW5, TW7, UB1, UB2, we can visit, measure and advise. Nearby, we also take on projects in Hounslow (1 mile), Isleworth (2 miles), Southall (2 miles), Hayes (Hillingdon) (3 miles), Feltham (3 miles). Just over the Surrey border, Ashford, Surrey is about 5 miles away.
Choose an extension type
- Glass box extensions · from £39,000
- Extension plans and drawings · from £1,550
- Orangery extensions · from £39,000
- Flat roof extensions · from £27,000
- Pitched roof extensions · from £28,500
- Building regulations for extensions · from £1,150
- Home office extensions · from £20,500
- Double-storey extensions · from £49,000
- Annexe extensions · from £71,500
- Extensions over a garage · from £31,000
- Porch extensions · from £5,200
- Utility and boot room extensions · from £18,000
- Single-storey rear extensions · from £27,000
- Timber frame extensions · from £27,000
- Side return extensions · from £23,000
- Side extensions · from £28,500
- Conservatory replacement extensions · from £26,000
- Bedroom extensions · from £33,500
- Planning permission for extensions · from £450
- Kitchen extensions · from £35,000
- Wraparound extensions · from £46,500
- Bungalow extensions · from £34,000
Free site visit
We visit your Heston home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
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 Heston
How much does an extension cost in Heston?
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.
Do I need planning permission for an extension in Heston?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
Do you cover all of Heston?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
How long does an extension take in Heston?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Heston, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Heston
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.