Two-storey extensions for detached houses in Westhill (Aberdeen and Aberdeenshire)

Quick reference for homeowners in Westhill (Aberdeen and Aberdeenshire).

Postcode districts: AB13, AB14 and AB32
County / area: Aberdeen and Aberdeenshire, Scotland
Price region: Scotland
Guide price: £81,000–£108,500 (£1,930–£2,580 per m²)
Approval route: Planning permission is usually needed: Class 1B permitted development only applies if every part of the extension is at least 10 m from all boundaries. A building warrant is needed before work starts.
Nearest towns: Dyce (5.3 miles), Aberdeen (6.8 miles), Nigg (7.5 miles)
Distance to Aberdeen: about 6.8 miles
First visit: Free, no obligation

About a two-storey extension for a detached house

This service suits you if you own a detached house and want a substantial amount of extra space, whether a side extension over a drive, a rear extension into the garden or a wraparound. You get a survey of the whole plot, options that compare layouts and costs, the approvals your nation needs, structural design and the build, carried out by vetted teams working under S&K.

Around Westhill (Aberdeen and Aberdeenshire) we also work in Dyce, Aberdeen and Nigg, and across the rest of Aberdeen and Aberdeenshire. Postcode districts in and near Westhill (Aberdeen and Aberdeenshire): AB13, AB14 and AB32.

What it costs in Westhill (Aberdeen and Aberdeenshire)

Using our Scotland rates, a two-storey extension for a detached house with a 3 m × 7 m footprint on two floors (42 m² of new floor space) comes to about £81,000–£108,500, including VAT. Bigger or more glazed designs cost more per m². Design fees, structural calculations and approval fees are separate and listed on our prices page.

Spec	Per m²	A 3 m × 7 m footprint on two floors (42 m² of new floor space)
Essential	£1,770–£2,380 per m²	£74,500–£100,000
Standard	£1,930–£2,580 per m²	£81,000–£108,500
Premium	£2,310–£3,100 per m²	£97,000–£130,500

Planning and building standards in Westhill (Aberdeen and Aberdeenshire)

In Scotland, a detached house on a large plot may be able to use Class 1B permitted development if no part of the two-storey extension is within 10 m of any boundary, it is no higher than the house and is not in a conservation area. Otherwise a householder application costs £371. A building warrant is needed either way.

Approval in Scotland: Householder planning application: £371. Councils have two months to decide a local planning application.

Building standards: A building warrant from the council's building standards service before work starts, and a completion certificate at the end. Scotland uses its own Technical Handbooks.

Design points for Westhill (Aberdeen and Aberdeenshire) homes

Choosing the best side

On a detached house you can often extend on either side or the rear. We look at orientation for daylight, where the stairs and landing are, the distance to each boundary, drains and trees, so the extension goes where it adds the most useful space.

Larger spans and steelwork

Bigger extensions often mean wider openings and longer spans, which need more steel and sometimes a steel frame. The engineer designs these early, because the size of the steel affects ceiling heights, floor depths and the cost.

How we'd run your project

Understand the brief
At your home in Westhill (Aberdeen and Aberdeenshire) we agree what you need: bedroom count, bathroom, kitchen space, and how much garden you want to keep.
Get it approved
Once you're happy with the design we submit it to the council for Westhill (Aberdeen and Aberdeenshire) and deal with any questions from the planning officer.
Detail and price
Construction drawings, engineer's calculations and building warrant approval, then a written fixed price for the build.
Build
Foundations, walls, floor, roof, windows, then first and second fix. We break through into the house as late as we can.

Questions about two-storey extensions for detached houses in Westhill (Aberdeen and Aberdeenshire)

Who handles building standards for a project in Westhill (Aberdeen and Aberdeenshire)?

We handle it as part of the project. What's needed in Scotland: a building warrant from the council's building standards service before work starts, and a completion certificate at the end. Scotland uses its own Technical Handbooks. We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.

How much does a two-storey extension for a detached house cost in Westhill (Aberdeen and Aberdeenshire)?

Our guide for Scotland, which covers Westhill (Aberdeen and Aberdeenshire), is £1,930–£2,580 per m² including VAT. A typical project with a 3 m × 7 m footprint on two floors (42 m² of new floor space) comes to about £81,000–£108,500. Design and approval fees are extra, and we fix the build price in writing once the design is agreed.

How long does a two-storey extension for a detached house take?

Allow 4 to 8 weeks for survey and design, then the approval period (councils have two months to decide a local planning application), then 4 to 8 weeks of technical design, which can overlap. The build itself usually takes 14 to 20 weeks, longer for large or complex designs.

Is a detached house extension a better investment than moving?

It often costs less than the gap between your house and a larger one nearby, once property tax, legal fees and removal costs are counted, but that depends on your area. Extending also has limits: every street has a ceiling price. We give you build costs so you can compare them with local asking prices.

Can I extend a detached house on both sides?

Sometimes. With planning permission, a council may accept extensions on both sides if the house stays well proportioned and keeps gaps to the boundaries. It is more common to extend on one side and the rear, or with a wraparound. We look at the plot as a whole before suggesting more than one extension.

Nearby

We also cover places near Westhill (Aberdeen and Aberdeenshire), including:

Other extensions in Westhill (Aberdeen and Aberdeenshire)

All two-storey extension services in Westhill (Aberdeen and Aberdeenshire) · Two-storey extensions for detached houses across Aberdeen and Aberdeenshire

Book a free site visit in Westhill (Aberdeen and Aberdeenshire) and we'll tell you what's possible, what approvals you need and what the design stage would cost.