Kendal house extensions
Planning an extension in Kendal? Compare extension types, see guide prices adjusted for Kendal and book a free site visit.
- Postcode districtsLA8, LA9
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Kendal 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.
Depending on the plot, kitchen extensions and single-storey rear extensions are often the strongest options, with double-storey extensions worth considering where there is room.
Kendal and surrounding towns
We cover Kendal and the postcode districts LA8, LA9. Nearby, we also take on projects in Ulverston (16 miles), Penrith (23 miles), Barrow-in-Furness (24 miles), Whitehaven (37 miles), Workington (39 miles). Just over the Lancashire border, Morecambe is about 18 miles away.
What extensions cost in Kendal
We publish guide prices so you can budget before anyone visits. For Kendal they are adjusted by ×0.95, the factor we use across North West England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
Do extensions in Kendal need planning permission?
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).
Every extension type in Kendal
- Utility and boot room extensions · from £13,000
- Porch extensions · from £3,800
- Home office extensions · from £15,000
- Side return extensions · from £17,000
- Double-storey extensions · from £36,000
- Conservatory replacement extensions · from £19,000
- Planning permission for extensions · from £300
- Wraparound extensions · from £34,000
- Kitchen extensions · from £25,500
- Pitched roof extensions · from £21,000
- Building regulations for extensions · from £850
- Side extensions · from £20,500
- Flat roof extensions · from £19,500
- Orangery extensions · from £28,500
- Timber frame extensions · from £19,500
- Bedroom extensions · from £24,500
- Extensions over a garage · from £22,500
- Bungalow extensions · from £24,500
- Extension plans and drawings · from £1,100
- Single-storey rear extensions · from £19,500
- Annexe extensions · from £52,000
- Glass box extensions · from £28,500
Free site visit
We visit your Kendal 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 Kendal
How much does an extension cost in Kendal?
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 I need planning permission for an extension in Kendal?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
How long does an extension take in Kendal?
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.
Book a free site visit in Kendal
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.