Extensions in Earley: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Earley, starting with a free visit and a planning check.
- Postcode districtsRG2, RG5, RG6
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Where we work near Earley
Our survey diary covers Earley, including RG2, RG5, RG6. Nearby, we also take on projects in Reading (3 miles), Wokingham (4 miles), Crowthorne (7 miles), Bracknell (7 miles), Sandhurst (8 miles). Yateley, in Hampshire, is roughly 7 miles from Earley and also on our list.
Choosing the right extension in Earley
In the South East, plenty of houses have already been extended once, which makes checking the remaining permitted development allowance an important early step.
Start by comparing double-storey extensions, wraparound extensions and single-storey rear extensions: between them they cover most of the layouts we see requested for houses like these.
Planning and building control in Earley
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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).
Guide prices for Earley
Every figure below is a guide for Earley, adjusted for South East England build costs (×1.12) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
| Kitchen extensions | 20 m² | £47,000 – £59,500 |
| Wraparound extensions | 25 m² | £64,000 – £81,500 |
| Side return extensions | 11 m² | £29,500 – £37,000 |
| Extensions over a garage | 12 m² | £28,000 – £36,500 |
| Orangery extensions | 16 m² | £50,000 – £63,000 |
Every extension type in Earley
- Kitchen extensions · from £30,000
- Wraparound extensions · from £40,000
- Bedroom extensions · from £29,000
- Utility and boot room extensions · from £15,500
- Extensions over a garage · from £26,500
- Single-storey rear extensions · from £23,500
- Glass box extensions · from £33,500
- Orangery extensions · from £33,500
- Double-storey extensions · from £42,500
- Flat roof extensions · from £23,500
- Conservatory replacement extensions · from £22,000
- Timber frame extensions · from £23,500
- Porch extensions · from £4,450
- Annexe extensions · from £61,500
- Side extensions · from £24,500
- Building regulations for extensions · from £1,000
- Home office extensions · from £17,500
- Planning permission for extensions · from £350
- Pitched roof extensions · from £24,500
- Side return extensions · from £20,000
- Extension plans and drawings · from £1,300
- Bungalow extensions · from £29,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Earley
How much does an extension cost in Earley?
Using our South East England factor (×1.12), a standard-spec single-storey extension of 20 m² is a guide £45,500 to £58,500 including VAT, and a 32 m² two-storey extension £64,500 to £84,500. 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 Earley, 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 Earley?
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 Earley
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.