Extending your home in Thurso
We take on house extensions in Thurso by arrangement. Because of travel and logistics, we agree the programme and any travel costs in writing before the survey.
- Postcode districtsKW14
- Price regionScotland (×0.98)
- Planning rulesScotland
- Site visitBy arrangement
Do extensions in Thurso need planning permission?
In Scotland, householder permitted development rules (Class 1A for single-storey ground-floor extensions and Class 1B for extensions of more than one storey) allow some smaller extensions without a planning application, within limits on depth, height and distance from the boundary. Conservation areas and listed buildings are more restricted.
In a conservation area or national scenic area the householder permitted development rights are more limited, listed homes need listed building consent, and if rights have been removed by a condition or direction, any extension needs an application.
In Scotland a building warrant from the council is needed before work starts on almost any extension, and a completion certificate is issued when the work is accepted. Building standards are set in the Scottish technical handbooks.
Applications are decided by your council as planning authority.
Guide prices for Thurso
Prices on this page use our Scotland factor of ×0.98, 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) |
|---|---|---|
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
| Extensions over a garage | 12 m² | £24,500 – £32,000 |
| Conservatory replacement extensions | 14 m² | £29,000 – £38,000 |
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
Covering Thurso and nearby
Across KW14, we can visit, measure and advise. Island and remote projects are planned individually, with travel, deliveries and accommodation for the team agreed before the survey.
Which extension suits a Thurso home?
Scotland's housing includes sandstone villas, terraces and tenements in the cities and plenty of post-war and modern houses and bungalows elsewhere. A building warrant is needed before work starts.
Depending on the plot, single-storey rear extensions and double-storey extensions are often the strongest options, with bungalow extensions worth considering where there is room.
Choose an extension type
- Utility and boot room extensions · from £13,500
- Kitchen extensions · from £26,000
- Orangery extensions · from £29,000
- Porch extensions · from £3,900
- Planning permission for extensions · from £300
- Side extensions · from £21,500
- Wraparound extensions · from £35,000
- Extensions over a garage · from £23,500
- Pitched roof extensions · from £21,500
- Glass box extensions · from £29,000
- Bungalow extensions · from £25,500
- Double-storey extensions · from £37,000
- Bedroom extensions · from £25,000
- Conservatory replacement extensions · from £19,500
- Annexe extensions · from £53,500
- Timber frame extensions · from £20,500
- Flat roof extensions · from £20,500
- Home office extensions · from £15,500
- Building regulations for extensions · from £850
- Extension plans and drawings · from £1,150
- Side return extensions · from £17,500
- Single-storey rear extensions · from £20,500
Site visit by arrangement
We visit your Thurso 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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
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 Thurso
How much does an extension cost in Thurso?
Using our Scotland factor (×0.98), a standard-spec single-storey extension of 20 m² is a guide £40,000 to £51,000 including VAT, and a 32 m² two-storey extension £56,000 to £74,000. Your written price follows the survey.
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, and in Scotland we apply for the building warrant before work starts.
Do you cover all of Thurso?
Yes, by arrangement: travel and any associated costs are agreed in writing before the survey.
Talk to us about a project in Thurso
We will talk through the project, the planning position and how we would organise the visit and the build.
- Site visit arranged around travel, costs agreed first
- 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 .
Send us your project details
Tell us a little about the project and we will arrange a time.