Cost of Single Storey Extension in Inverness (2026)
A typical single storey extension job in Inverness costs £1,655 at the budget end and £2,945 for a full-spec install, per m². Outside peak season you'll usually get booked in within three to four weeks; summer runs tighter.
About single storey extension in Inverness
Inverness is a small town of around 63,000 in Highland. The housing is mostly Victorian tenements, sandstone terraces and 20th-century estates typical of Scottish and Welsh urban centres. That matters: older properties usually mean more pipework, rewiring and retrofit surprises, while newer builds in districts like IV1, IV2, IV3 tend to be quicker jobs with standardised fittings. Local trade prices sit below the UK average. Lower contractor overheads and shorter distances across Highland do most of the work.
Scottish pricing runs from Edinburgh (above average) to the Highlands (variable, often with long lead times). The trade bodies are different here — SELECT for sparkies, SNIPEF for plumbers, and the regulatory framework is Building Standards rather than Building Regulations. Doesn't usually slow jobs down, but the paperwork changes.
Building jobs are labour-heavy, and materials have moved fast — brick, timber, steel, insulation and board are all 20 to 40 percent up on pre-2022. FMB and TrustMark are your best signposts for a proper builder. On anything bigger than a loft conversion, get a Building Control officer involved from day one; fixing non-compliance later costs a fortune.
Single Storey Extension cost breakdown in Inverness
Simple rear extension with standard finish
Open-plan kitchen extension with bi-fold doors
Wrap-around or glazed extension with lantern roof and structural steels
What affects the price of single storey extension in Inverness?
- Ground conditions and foundation depth
- Glazing ratio (bi-folds, roof lights)
- Kitchen refit included
- Structural steels and knock-through
- Planning permission vs PD
Inverness vs the UK average
Inverness sits in the building & construction market at a cost multiplier of 0.92× the UK national average. That puts Inverness single storey extension prices at £1,655–£2,945 versus the UK average of £1,800–£3,200 per m².
Single Storey Extension cost calculator — Inverness
Estimate based on live 2025 UK trade pricing. Always get 3 written quotes before committing.
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What's typically included in a single storey extension quote
- Foundations and drainage
- Brick and block shell
- Roof and glazing
- First and second fix
- Plaster and decoration
Frequently asked questions
How much does single storey extension cost in Inverness?
Budget £1,655 to £2,945 per m² for single storey extension in Inverness. Prices here are around 8% cheaper than the UK average. What moves a quote inside that range is mostly building contractor day rates in Highland and the specific material list for your job.
How long does single storey extension take in Inverness?
A straightforward single storey extension job in Inverness runs to 10–16 weeks. You can lose days to things outside the contractor's control — parts on backorder, awkward access, or a firm slotting your job around existing bookings. Ask for a start date and expected finish up front.
What's included in the price of single storey extension in Inverness?
A proper single storey extension quote in Inverness should cover: Foundations and drainage; Brick and block shell; Roof and glazing; First and second fix; Plaster and decoration. If any of those aren't itemised on your quote, push back and ask. A written guarantee with a clear warranty period is reasonable to expect on this kind of work.
Is single storey extension cheaper in Inverness than the UK average?
Single Storey Extension in Inverness runs around 8% cheaper than the UK average. The UK-wide benchmark for this job is £1,800 to £3,200 per m²; Inverness quotes tend to land between £1,655 and £2,945. Handy to know what the average actually looks like before you price round.
Do I need planning permission for single storey extension in Inverness?
Most rear extensions fall under Permitted Development (up to 6m terraced/8m detached with Prior Approval). Side extensions and Article 4 areas require full planning. If the property sits in a conservation area or is listed, ring Highland Council before you book anything in. It's a free call and saves a world of grief later.
See all single storey extension prices across the UK or browse all tradespeople costs in Inverness.