House extensions in Bethnal Green
More space without moving: we plan and build extensions across Bethnal Green, with one team for the drawings, the council and the build.
- Postcode districtsE1, E2, E8, EC2A, EC2M, EC3A
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Bethnal Green
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).
Popular extension prices in Bethnal Green
Prices on this page use our London factor of ×1.3, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
| 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 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
Where we work near Bethnal Green
We cover Bethnal Green and the postcode districts E1, E2, E8, EC2A, EC2M, EC3A. Neighbouring towns we cover include Stepney (1 mile), Bow (2 miles), Highbury (2 miles), Stratford (3 miles), Stamford Hill (3 miles). Waltham Abbey, in Essex, is roughly 11 miles from Bethnal Green and also on our list.
Choosing the right extension in Bethnal Green
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 kitchen extensions, glass box extensions and side return extensions: between them they cover most of the layouts we see requested for houses like these.
All extension types we build in Bethnal Green
- Double-storey extensions · from £49,000
- Utility and boot room extensions · from £18,000
- Porch extensions · from £5,200
- Timber frame extensions · from £27,000
- Extensions over a garage · from £31,000
- Side extensions · from £28,500
- Building regulations for extensions · from £1,150
- Home office extensions · from £20,500
- Glass box extensions · from £39,000
- Planning permission for extensions · from £450
- Annexe extensions · from £71,500
- Kitchen extensions · from £35,000
- Orangery extensions · from £39,000
- Pitched roof extensions · from £28,500
- Flat roof extensions · from £27,000
- Wraparound extensions · from £46,500
- Extension plans and drawings · from £1,550
- Single-storey rear extensions · from £27,000
- Bedroom extensions · from £33,500
- Conservatory replacement extensions · from £26,000
- Bungalow extensions · from £34,000
- Side return extensions · from £23,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Bethnal Green
How much does an extension cost in Bethnal Green?
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 you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Do you cover all of Bethnal Green?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
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.
Do I need planning permission for an extension in Bethnal Green?
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.
Book a free site visit in Bethnal Green
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.