House extensions in Scarborough
From a small utility to a two-storey addition, we take on house extensions throughout Scarborough, starting with a free visit and a planning check.
- Postcode districtsYO11, YO12
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
Scarborough and surrounding towns
We cover Scarborough and the postcode districts YO11, YO12. Neighbouring towns we cover include Whitby (18 miles), Redcar (35 miles), York (35 miles), Middlesbrough (39 miles), Selby (44 miles). For homes towards East Riding of Yorkshire, Bridlington is around 16 miles away.
Approvals for an extension in Scarborough
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.
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).
Popular extension prices in Scarborough
Prices on this page use our Yorkshire and the Humber factor of ×0.94, 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) |
|---|---|---|
| Orangery extensions | 16 m² | £42,000 – £53,000 |
| Extensions over a garage | 12 m² | £23,500 – £30,500 |
| Double-storey extensions | 32 m² | £54,000 – £71,000 |
| Side return extensions | 11 m² | £24,500 – £31,500 |
| Conservatory replacement extensions | 14 m² | £28,000 – £36,500 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,000 |
What works best for Scarborough houses?
Homes across Yorkshire and the Humber range from back-to-back and through terraces to large suburban semis, and extension options vary with them.
Depending on the plot, double-storey extensions and pitched roof extensions are often the strongest options, with side return extensions worth considering where there is room.
All extension types we build in Scarborough
- Home office extensions · from £15,000
- Porch extensions · from £3,750
- Timber frame extensions · from £19,500
- Bedroom extensions · from £24,000
- Utility and boot room extensions · from £13,000
- Extension plans and drawings · from £1,100
- Bungalow extensions · from £24,500
- Side extensions · from £20,500
- Side return extensions · from £16,500
- Kitchen extensions · from £25,000
- Conservatory replacement extensions · from £18,500
- Glass box extensions · from £28,000
- Pitched roof extensions · from £20,500
- Flat roof extensions · from £19,500
- Planning permission for extensions · from £300
- Double-storey extensions · from £35,500
- Annexe extensions · from £51,500
- Wraparound extensions · from £33,500
- Single-storey rear extensions · from £19,500
- Extensions over a garage · from £22,500
- Building regulations for extensions · from £800
- Orangery extensions · from £28,000
Free site visit
We visit your Scarborough home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Scarborough
How much does an extension cost in Scarborough?
Using our Yorkshire and the Humber factor (×0.94), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,000 including VAT, and a 32 m² two-storey extension £54,000 to £71,000. 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.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Scarborough, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Scarborough?
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.
Book a free site visit in Scarborough
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.