Extending your home in Accrington
Planning an extension in Accrington? Compare extension types, see guide prices adjusted for Accrington and book a free site visit.
- Postcode districtsBB5
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Accrington
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 return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
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).
Accrington extension prices at a glance
Prices on this page use our North West England factor of ×0.95, 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) |
|---|---|---|
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
Areas we cover around Accrington
We cover Accrington and the postcode districts BB5. The same team covers Rawtenstall (5 miles), Blackburn (5 miles), Darwen (6 miles), Burnley (6 miles), Nelson (8 miles), all within easy reach. Bury, in Greater Manchester, is roughly 11 miles from Accrington and also on our list.
Which extension suits a Accrington home?
Across the North West, terraced houses with small rear yards suit compact rear and side return extensions, while suburban semis have room for more.
Start by comparing single-storey rear extensions, side return extensions and kitchen extensions: between them they cover most of the layouts we see requested for houses like these.
Choose an extension type
- Side extensions · from £20,500
- Timber frame extensions · from £19,500
- Glass box extensions · from £28,500
- Pitched roof extensions · from £21,000
- Single-storey rear extensions · from £19,500
- Orangery extensions · from £28,500
- Porch extensions · from £3,800
- Annexe extensions · from £52,000
- Flat roof extensions · from £19,500
- Double-storey extensions · from £36,000
- Bungalow extensions · from £24,500
- Utility and boot room extensions · from £13,000
- Kitchen extensions · from £25,500
- Side return extensions · from £17,000
- Extension plans and drawings · from £1,100
- Wraparound extensions · from £34,000
- Extensions over a garage · from £22,500
- Building regulations for extensions · from £850
- Conservatory replacement extensions · from £19,000
- Planning permission for extensions · from £300
- Bedroom extensions · from £24,500
- Home office extensions · from £15,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
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 Accrington
How much does an extension cost in Accrington?
Using our North West England factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
How long does an extension take in Accrington?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Accrington, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you cover all of Accrington?
Yes, including the surrounding parts of Lancashire. Site visits are free and there is no obligation.
Book a free site visit in Accrington
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.