Extensions in Woodbridge: design, planning and build
Looking to extend your home in Woodbridge? Start here: extension types, guide prices for Woodbridge, the planning rules that apply and how a project runs.
- Postcode districtsIP12
- Price regionEast of England (×1.06)
- Planning rulesEngland
- Site visitFree, no obligation
What extensions cost in Woodbridge
Prices on this page use our East of England factor of ×1.06, 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) |
|---|---|---|
| Side return extensions | 11 m² | £27,500 – £35,000 |
| Extensions over a garage | 12 m² | £26,500 – £34,500 |
| Orangery extensions | 16 m² | £47,000 – £59,500 |
| Conservatory replacement extensions | 14 m² | £31,500 – £41,000 |
| Single-storey rear extensions | 20 m² | £43,000 – £55,500 |
Covering Woodbridge and nearby
We cover Woodbridge and the postcode districts IP12. Nearby, we also take on projects in Felixstowe (9 miles), Ipswich (10 miles), Stowmarket (17 miles), Sudbury (27 miles), Bury St Edmunds (30 miles). For homes towards Essex, Harwich is around 11 miles away.
Which extension suits a Woodbridge home?
Across the East of England many houses sit on generous plots, and single-storey and wraparound extensions are a natural fit.
Start by comparing single-storey rear extensions, wraparound extensions and double-storey extensions: between them they cover most of the layouts we see requested for houses like these.
Do extensions in Woodbridge 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 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).
Choose an extension type
- Home office extensions · from £16,500
- Conservatory replacement extensions · from £21,000
- Flat roof extensions · from £22,000
- Double-storey extensions · from £40,000
- Extension plans and drawings · from £1,250
- Wraparound extensions · from £38,000
- Porch extensions · from £4,200
- Bedroom extensions · from £27,500
- Extensions over a garage · from £25,000
- Side return extensions · from £19,000
- Single-storey rear extensions · from £22,000
- Building regulations for extensions · from £950
- Annexe extensions · from £58,000
- Glass box extensions · from £31,500
- Utility and boot room extensions · from £14,500
- Kitchen extensions · from £28,500
- Side extensions · from £23,000
- Pitched roof extensions · from £23,500
- Bungalow extensions · from £27,500
- Planning permission for extensions · from £350
- Orangery extensions · from £31,500
- Timber frame extensions · from £22,000
Free site visit
We visit your Woodbridge 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 Woodbridge
How much does an extension cost in Woodbridge?
Using our East of England factor (×1.06), a standard-spec single-storey extension of 20 m² is a guide £43,000 to £55,500 including VAT, and a 32 m² two-storey extension £61,000 to £80,000. Your written price follows the survey.
Do I need planning permission for an extension in Woodbridge?
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.
How long does an extension take in Woodbridge?
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 Woodbridge, and the guide-price tool gives a range for your own size and finish in about a minute.
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.
Book a free site visit in Woodbridge
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.