Home extensions in Peterlee
Every type of house extension in Peterlee, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsSR8
- Price regionNorth East England (×0.91)
- Planning rulesEngland
- Site visitFree, no obligation
Which extension suits a Peterlee home?
The North East has many brick terraces, colliery-era housing and post-war semis, with rear extensions and kitchen extensions the most common requests.
Start by comparing kitchen extensions, utility and boot room extensions and double-storey extensions: between them they cover most of the layouts we see requested for houses like these.
Guide prices for Peterlee
Use these Peterlee 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) |
|---|---|---|
| Side return extensions | 11 m² | £24,000 – £30,500 |
| Orangery extensions | 16 m² | £40,500 – £51,000 |
| Extensions over a garage | 12 m² | £22,500 – £29,500 |
| Conservatory replacement extensions | 14 m² | £27,000 – £35,500 |
| Single-storey rear extensions | 20 m² | £37,000 – £47,500 |
| Double-storey extensions | 32 m² | £52,000 – £68,500 |
| Wraparound extensions | 25 m² | £52,000 – £66,000 |
Planning rules in Peterlee
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.
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).
Where we work near Peterlee
We cover Peterlee and the postcode districts SR8. Neighbouring towns we cover include Seaham (5 miles), Hartlepool (7 miles), Durham (10 miles), Chester-le-Street (12 miles), Billingham (12 miles). Just over the Tyne and Wear border, Houghton-le-Spring is about 8 miles away.
Every extension type in Peterlee
- Bedroom extensions · from £23,500
- Wraparound extensions · from £32,500
- Bungalow extensions · from £23,500
- Utility and boot room extensions · from £12,500
- Timber frame extensions · from £19,000
- Home office extensions · from £14,500
- Building regulations for extensions · from £800
- Double-storey extensions · from £34,500
- Side extensions · from £20,000
- Glass box extensions · from £27,000
- Flat roof extensions · from £19,000
- Pitched roof extensions · from £20,000
- Porch extensions · from £3,600
- Single-storey rear extensions · from £19,000
- Annexe extensions · from £50,000
- Extension plans and drawings · from £1,050
- Side return extensions · from £16,000
- Conservatory replacement extensions · from £18,000
- Orangery extensions · from £27,000
- Kitchen extensions · from £24,500
- Extensions over a garage · from £21,500
- Planning permission for extensions · from £300
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
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Peterlee
How much does an extension cost in Peterlee?
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.
How long does an extension take in Peterlee?
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.
Do you cover all of Peterlee?
Yes, including the surrounding parts of County Durham. Site visits are free and there is no obligation.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
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 Peterlee
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.