House extensions in Suffolk
Every type of house extension in Suffolk, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Towns listed9
- Price regionEast of England (×1.06)
- Planning rulesEngland
- Postcode districts35
Towns we cover in Suffolk
Towns we cover here include Ipswich, Lowestoft, Bury St Edmunds, Haverhill.
Choosing the right extension in Suffolk
Across the East of England many houses sit on generous plots, and single-storey and wraparound extensions are a natural fit.
Start by comparing double-storey extensions, single-storey rear extensions and bungalow extensions: between them they cover most of the layouts we see requested for houses like these.
Approvals for an extension in Suffolk
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 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.
Popular extension prices in Suffolk
We publish guide prices so you can budget before anyone visits. For Suffolk they are adjusted by ×1.06, the factor we use across East of England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £31,500 – £41,000 |
| Kitchen extensions | 20 m² | £44,500 – £56,500 |
| Single-storey rear extensions | 20 m² | £43,000 – £55,500 |
| Wraparound extensions | 25 m² | £60,500 – £77,000 |
| Extensions over a garage | 12 m² | £26,500 – £34,500 |
| Side return extensions | 11 m² | £27,500 – £35,000 |
Choose an extension type
- Extension plans and drawings · from £1,250
- Kitchen extensions · from £28,500
- Annexe extensions · from £58,000
- Double-storey extensions · from £40,000
- Side extensions · from £23,000
- Wraparound extensions · from £38,000
- Extensions over a garage · from £25,000
- Single-storey rear extensions · from £22,000
- Timber frame extensions · from £22,000
- Home office extensions · from £16,500
- Pitched roof extensions · from £23,500
- Side return extensions · from £19,000
- Orangery extensions · from £31,500
- Building regulations for extensions · from £950
- Glass box extensions · from £31,500
- Porch extensions · from £4,200
- Conservatory replacement extensions · from £21,000
- Utility and boot room extensions · from £14,500
- Bedroom extensions · from £27,500
- Bungalow extensions · from £27,500
- Planning permission for extensions · from £350
- Flat roof extensions · from £22,000
Neighbouring areas
Questions about extensions in Suffolk
How much does an extension cost in Suffolk?
With our East of England factor (×1.06), a standard-spec 20 m² single-storey extension is a guide £43,000 to £55,500 including VAT. Prices for every type are linked on this page.
Do I need planning permission for an extension in Suffolk?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Suffolk, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Suffolk
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.