Extending your home in Stratford
From a small utility to a two-storey addition, we take on house extensions throughout Stratford, starting with a free visit and a planning check.
- Postcode districtsE3, E7, E9, E13, E15, E16
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
What extensions cost in Stratford
Every figure below is a guide for Stratford, 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) |
|---|---|---|
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
Which extension suits a Stratford home?
Across London, terraced houses with narrow side returns and tight access are the norm, which shapes everything from party wall notices to how materials reach the back garden.
The types we would usually look at first for a home in Stratford are side return extensions, kitchen extensions and glass box extensions, depending on the garden and how the house is laid out.
Covering Stratford and nearby
Across E3, E7, E9, E13, E15, E16, we can visit, measure and advise. The same team covers West Ham (1 mile), Bow (1 mile), Canning Town (2 miles), Stepney (2 miles), Manor Park (2 miles), all within easy reach. For homes towards Essex, Waltham Abbey is around 11 miles away.
Planning rules in Stratford
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).
Extension types and starting prices
- Extension plans and drawings · from £1,550
- Side return extensions · from £23,000
- Planning permission for extensions · from £450
- Porch extensions · from £5,200
- Extensions over a garage · from £31,000
- Annexe extensions · from £71,500
- Pitched roof extensions · from £28,500
- Wraparound extensions · from £46,500
- Utility and boot room extensions · from £18,000
- Double-storey extensions · from £49,000
- Side extensions · from £28,500
- Single-storey rear extensions · from £27,000
- Orangery extensions · from £39,000
- Building regulations for extensions · from £1,150
- Kitchen extensions · from £35,000
- Glass box extensions · from £39,000
- Conservatory replacement extensions · from £26,000
- Flat roof extensions · from £27,000
- Home office extensions · from £20,500
- Bungalow extensions · from £34,000
- Bedroom extensions · from £33,500
- Timber frame extensions · from £27,000
Free site visit
We visit your Stratford home, measure up, talk through what you want and check the planning position.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Stratford
How much does an extension cost in Stratford?
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.
How long does an extension take in Stratford?
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 Stratford, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Stratford?
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 Stratford?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
Book a free site visit in Stratford
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.