Extending your home in Warrington
Planning an extension in Warrington? Compare extension types, see guide prices adjusted for Warrington and book a free site visit.
- Postcode districtsWA1, WA2, WA3, WA4, WA5, WA13
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Covering Warrington and nearby
Site visits are available across Warrington (WA1, WA2, WA3, WA4, WA5, WA13). Neighbouring towns we cover include Widnes (7 miles), Runcorn (7 miles), Northwich (10 miles), Winsford (14 miles), Wilmslow (15 miles). Newton-le-Willows, in Merseyside, is roughly 4 miles from Warrington and also on our list.
Popular extension prices in Warrington
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) |
|---|---|---|
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
What works best for Warrington houses?
Across the North West, terraced houses with small rear yards suit compact rear and side return extensions, while suburban semis have room for more.
The types we would usually look at first for a home in Warrington are single-storey rear extensions, side return extensions and kitchen extensions, depending on the garden and how the house is laid out.
Planning rules in Warrington
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.
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).
All extension types we build in Warrington
- Bungalow extensions · from £24,500
- Bedroom extensions · from £24,500
- Side extensions · from £20,500
- Annexe extensions · from £52,000
- Pitched roof extensions · from £21,000
- Glass box extensions · from £28,500
- Porch extensions · from £3,800
- Orangery extensions · from £28,500
- Kitchen extensions · from £25,500
- Single-storey rear extensions · from £19,500
- Planning permission for extensions · from £300
- Extension plans and drawings · from £1,100
- Double-storey extensions · from £36,000
- Wraparound extensions · from £34,000
- Timber frame extensions · from £19,500
- Flat roof extensions · from £19,500
- Utility and boot room extensions · from £13,000
- Home office extensions · from £15,000
- Conservatory replacement extensions · from £19,000
- Extensions over a garage · from £22,500
- Building regulations for extensions · from £850
- Side return extensions · from £17,000
Free site visit
We visit your Warrington 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 Warrington
How much does an extension cost in Warrington?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Warrington, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you cover all of Warrington?
Yes, including the surrounding parts of Cheshire. Site visits are free and there is no obligation.
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 Warrington
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.