Pitched roof extensions for homes in Fort William
We take on pitched roof extensions in Fort William by arrangement. Because of travel and logistics, we agree the programme and any travel costs in writing before the survey.
- Guide price in Fort WilliamFrom £21,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time10–16 weeks on site
- Postcode districtsPH33

Planning rules that apply in Fort William
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. Separately, almost every extension needs a building warrant from the council before work starts.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
Scotland has no Party Wall Act. Where work affects a shared wall or a neighbour's land, we agree access, protection and making good with your neighbour in writing before work starts.
Applications are decided by your council as planning authority.
Pitched roof extension prices in Fort William
Labour and material costs vary across the UK, so for Fort William we use our Scotland factor (×0.98). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Fort William: £1,810 to £3,430 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £21,500 – £25,500 | £25,000 – £32,500 | £32,000 – £41,500 |
| 4 m × 5 m 20 m² | £36,000 – £42,500 | £42,000 – £54,000 | £53,500 – £69,000 |
| 5 m × 6 m 30 m² | £54,000 – £63,500 | £63,000 – £81,000 | £80,500 – £103,000 |
Try the guide-price tool to see a range for your own size and finish.
Working in Fort William
Across PH33, 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.
Across Scotland, extensions follow Scottish planning and building standards, including the building warrant process, which we build into the programme from the start.
Included in a typical project
- Vaulted ceilings or flat ceilings with storage above
- Lead or proprietary flashings to the main wall
- Roof design matched to the existing pitch and tiles
- Roof windows positioned for light and ventilation
- Insulation to current building regulations
Our process, step by step
Visits to Fort William are arranged around travel; we confirm any travel costs in writing before the survey.
Site visit by arrangement
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
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.
Common questions in Fort William
Will my neighbours in Fort William 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.
Do you cover all of Fort William?
Yes. We cover Fort William and the surrounding parts of Highlands and Islands. Projects here are taken on by arrangement because of travel, and any travel costs are agreed before the survey.
Who do I contract with for a pitched roof extension in Fort William?
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.
How much does a pitched roof extension cost?
Our guide range is about £1,810 to £3,430 per m² including VAT, a little more than a flat roof because of the roof structure and tiles.
Can I have a vaulted ceiling?
Yes. A vaulted ceiling with roof windows is one of the main reasons to choose a pitched roof. It needs insulation between and under the rafters to meet the building regulations.
Talk to us about a project in Fort William
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.