Extending your home in Sunderland
Every type of house extension in Sunderland, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsSR1, SR2, SR4, SR5, SR6, SR9
- Price regionNorth East England (×0.91)
- Planning rulesEngland
- Site visitFree, no obligation
Guide prices for Sunderland
Use these Sunderland guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £38,000 – £48,500 |
| Side return extensions | 11 m² | £24,000 – £30,500 |
| Double-storey extensions | 32 m² | £52,000 – £68,500 |
| Single-storey rear extensions | 20 m² | £37,000 – £47,500 |
| Conservatory replacement extensions | 14 m² | £27,000 – £35,500 |
| Wraparound extensions | 25 m² | £52,000 – £66,000 |
| Orangery extensions | 16 m² | £40,500 – £51,000 |
Planning rules in Sunderland
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.
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).
Where we work near Sunderland
Site visits are available across Sunderland (SR1, SR2, SR4, SR5, SR6, SR9). The same team covers Washington (5 miles), Houghton-le-Spring (6 miles), Jarrow (7 miles), South Shields (7 miles), Hebburn (7 miles), all within easy reach. For homes towards County Durham, Seaham is around 5 miles away.
Which extension suits a Sunderland home?
Across the North East, houses often have rear yards or modest gardens, so compact, well-lit single-storey extensions make the biggest difference.
For many houses here, double-storey extensions, single-storey rear extensions or kitchen extensions gives the most useful space for the budget.
Choose an extension type
- Kitchen extensions · from £24,500
- Home office extensions · from £14,500
- Conservatory replacement extensions · from £18,000
- Extension plans and drawings · from £1,050
- Building regulations for extensions · from £800
- Glass box extensions · from £27,000
- Bungalow extensions · from £23,500
- Timber frame extensions · from £19,000
- Extensions over a garage · from £21,500
- Flat roof extensions · from £19,000
- Wraparound extensions · from £32,500
- Orangery extensions · from £27,000
- Pitched roof extensions · from £20,000
- Planning permission for extensions · from £300
- Double-storey extensions · from £34,500
- Side return extensions · from £16,000
- Side extensions · from £20,000
- Porch extensions · from £3,600
- Annexe extensions · from £50,000
- Utility and boot room extensions · from £12,500
- Bedroom extensions · from £23,500
- Single-storey rear extensions · from £19,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
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 Sunderland
How much does an extension cost in Sunderland?
Using our North East England factor (×0.91), a standard-spec single-storey extension of 20 m² is a guide £37,000 to £47,500 including VAT, and a 32 m² two-storey extension £52,000 to £68,500. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Sunderland, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Sunderland?
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.
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 Sunderland
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.