Extra bedroom and en-suite extensions in Westhill (Aberdeen and Aberdeenshire)
An extra bedroom and en-suite extension is one of the most space-efficient ways to add bedrooms and living space to a house in Westhill (Aberdeen and Aberdeenshire), because the new floors share one set of foundations and one roof.
Before you start in Westhill (Aberdeen and Aberdeenshire), here's what applies.
- Postcode districts
- AB13, AB14 and AB32
- County / area
- Aberdeen and Aberdeenshire, Scotland
- Price region
- Scotland
- Guide price
- £52,500–£71,000 (£1,880–£2,540 per m²), plus £5,500–£11,000 for the en-suite
- 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 an extra bedroom and en-suite extension
An extra bedroom and en-suite extension is a two-storey extension planned around a new double bedroom with its own shower room on the first floor, with a ground-floor room below. It is one of the most effective ways to add space for a growing family. Nationwide's 2025 research linked adding a double bedroom and bathroom to a three-bed, one-bathroom house with value gains of up to 24%.
We cover Westhill (Aberdeen and Aberdeenshire) (AB13, AB14 and AB32) and the places around it, including Dyce (5.3 miles), Aberdeen (6.8 miles) and Nigg.
What it costs in Westhill (Aberdeen and Aberdeenshire)
Using our Scotland rates, an extra bedroom and en-suite extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) comes to about £52,500–£71,000 (plus £5,500–£11,000 for the en-suite), including VAT. Bigger or more glazed designs cost more per m². Keep a contingency of around 10% for things nobody can see until the ground is opened up.
| Spec | Per m² | A 4 m × 3.5 m footprint on two floors (28 m² of new floor space) |
|---|---|---|
| Essential | £1,730–£2,330 per m² | £48,500–£65,500 |
| Standard | £1,880–£2,540 per m² | £52,500–£71,000 |
| Premium | £2,260–£3,050 per m² | £63,000–£85,500 |
Planning and building standards in Westhill (Aberdeen and Aberdeenshire)
In Scotland, an extra bedroom on a new first floor makes the extension more than one storey, so Class 1B applies, needing at least 10 m to every boundary. Most plots need a householder application, which costs £371 and is decided within two months. The building warrant then covers the escape window, ventilation and drainage.
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
Sound and privacy
Bedrooms above a kitchen or family room benefit from an insulated floor to reduce noise. Side-facing upstairs windows usually have to be obscure-glazed, so we place the main bedroom window to the rear and the en-suite window to the side where possible.
Connecting to the landing
The new bedroom must be reached from the existing landing, usually through a new opening in the outside wall or by taking part of an existing bedroom as a corridor. We look at the stairs and landing first, because a poor connection can waste much of the new space.
How we'd run your project
Free site visit
We visit your home in Westhill (Aberdeen and Aberdeenshire), look at the structure, access and boundaries, and talk through what you want the new rooms to do.
Plans, then approval
Measured survey, design, then the right approval route for your house. We explain each step before we take it.
Structure and building standards
A structural engineer sizes the foundations and steels, and we get a building warrant before work starts.
Build and sign-off
Vetted teams working under S&K build the extension, and we arrange the completion certificate at the end.
Questions about extra bedroom and en-suite extensions in Westhill (Aberdeen and Aberdeenshire)
Which postcodes do you cover around Westhill (Aberdeen and Aberdeenshire)?
We cover Westhill (Aberdeen and Aberdeenshire) (AB13, AB14 and AB32) and nearby places including Dyce, Aberdeen and Nigg, plus the rest of Aberdeen and Aberdeenshire. The first site visit is free.
How much does an extra bedroom and en-suite extension cost in Westhill (Aberdeen and Aberdeenshire)?
Our guide for Scotland, which covers Westhill (Aberdeen and Aberdeenshire), is £1,880–£2,540 per m² including VAT. A typical project with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) comes to about £52,500–£71,000 (plus £5,500–£11,000 for the en-suite). Design and approval fees are extra, and we fix the build price in writing once the design is agreed.
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.
Does an extra bedroom add value to my house?
It usually does, though not always by the full cost. Nationwide's 2025 research found that adding a double bedroom to a two-bed house was linked to about 13% higher value, and a double bedroom and bathroom on a three-bed, one-bathroom house up to 24%. Local ceiling prices still apply.
How big should a new double bedroom be?
There is no legal minimum size for a bedroom in a house you own, so the test is whether it works. A comfortable double needs room for the bed with space to walk round it, wardrobes and a door that opens freely. We draw furniture on the plans so you can judge the space before anything is built.
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) · Extra bedroom and en-suite extensions across Aberdeen and Aberdeenshire
Ready to talk it through? Call us or send the form and we'll arrange a visit to your home in Westhill (Aberdeen and Aberdeenshire).