Timber frame extensions for homes in Perth
A timber frame extension in Perth starts with the right design and the right approval route. We take care of both, then build it with our own project management.
- Guide price in PerthFrom £20,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time8–14 weeks on site
- Postcode districtsPH1, PH2

Will the council need to approve it?
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.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
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.
What we take care of
- Frame design and structural calculations
- Cladding, render or brick slip finish
- Breathable wall build-up with insulation
- Fire and acoustic details where needed
- Foundations, often lighter than masonry
Moisture is the enemy of any timber building. We design ventilated cladding cavities, breather membranes and a proper damp-proof course height, and keep the frame dry during construction.
How much does a timber frame extension cost in Perth?
For Perth we adjust our national guide rates by ×0.98, the factor we use for Scotland. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Perth: £1,720 to £3,330 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £20,500 – £25,000 | £24,000 – £31,500 | £30,500 – £40,000 |
| 4 m × 5 m 20 m² | £34,000 – £41,500 | £40,000 – £52,000 | £50,500 – £67,000 |
| 5 m × 6 m 30 m² | £51,000 – £62,000 | £60,000 – £78,000 | £76,000 – £100,000 |
For a figure based on your own dimensions, use our guide-price tool.
Covering Perth
Across PH1, PH2, we can visit, measure and advise. The same team covers Blairgowrie (15 miles), Crieff (15 miles), all within easy reach.
Across Scotland, extensions follow Scottish planning and building standards, including the building warrant process, which we build into the programme from the start.
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Common questions in Perth
Will my neighbours in Perth be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
Who do I contract with for a timber frame extension in Perth?
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 I need building regulations approval in Perth?
Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.
Is timber frame cheaper than brick?
It is similar overall. The frame can save time on site, but the cladding choice has a big effect on cost. Our guide range is about £1,720 to £3,330 per m² including VAT.
Does a timber frame extension need planning permission?
The same planning rules apply as for any extension. If the cladding looks different from the house, permitted development’s matching-materials condition may mean an application is needed.
Book a free site visit in Perth
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.