Extensions over a garage in Hale (Greater Manchester)

Useful details for planning an extension over a garage in Hale (Greater Manchester).

Postcode districts: WA15
County / area: Greater Manchester, England
Price region: North West England
Guide price: £30,000–£43,500 (£1,660–£2,420 per m²)
Approval route: Planning permission is needed: in England, permitted development only allows single-storey extensions to the side.
Nearest towns: Altrincham (0.9 miles), Hale Barns (1 mile), Timperley (1.5 miles)
Distance to Manchester: about 8.1 miles
First visit: Free, no obligation

About an extension over a garage

An extension over a garage suits you if you have an attached single garage beside the house and need an extra bedroom or a larger main bedroom with an en-suite. You get an inspection of the garage structure, a design that matches the house, the approvals your nation needs, structural design, building regulations approval and the build, carried out by vetted teams working under S&K.

Hale (Greater Manchester) sits about 8.1 miles from Manchester. Closer to home, Altrincham is 0.9 miles away and Hale Barns 1.0 miles.

What it costs in Hale (Greater Manchester)

For budgeting in Hale (Greater Manchester), allow around £30,000–£43,500 for an extension over a garage with 3 m × 6 m of new first-floor space (18 m²). That's based on £1,660–£2,420 per m² including VAT for North West England. Kitchens, bathroom fittings and flooring are priced separately so you can compare like with like.

Spec	Per m²	3 m × 6 m of new first-floor space (18 m²)
Essential	£1,530–£2,230 per m²	£27,500–£40,000
Standard	£1,660–£2,420 per m²	£30,000–£43,500
Premium	£1,990–£2,910 per m²	£36,000–£52,500

Planning and building regulations in Hale (Greater Manchester)

In England, most garages sit beside the house, so building over one makes a two-storey extension beyond a side wall, which always needs planning permission. If the garage is at the rear, the 3 m and 7 m rules for two-storey rear extensions apply, measured from the original house. A householder application costs £548 (or £575 for applications made from 8 December 2026).

Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.

Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.

Design points for Hale (Greater Manchester) homes

Checking the garage foundations

Garages are often built on shallow strip footings sized for a single-storey wall and a light roof. A trial hole shows their depth and condition, and the engineer decides whether they can carry two storeys or need underpinning or new foundations inside the garage.

Fire separation

If the garage stays a garage, the floor between it and the room above, and any door into the house, must give fire separation under building regulations. That usually means fire-resisting plasterboard ceilings, sealed gaps and a fire door, which we design in from the start.

How we'd run your project

Visit and first ideas
One of our team visits your house in Hale (Greater Manchester), checks the walls, roof and drains, and sketches out options with you.
Plans, then approval
Measured survey, design, then the right approval route for your house. We explain each step before we take it.
Engineer it
Foundations sized for two floors, steels for any openings, and building control approval, all before anyone starts on site.
Finish and certify
Second fix, plastering and making good, then building control's final inspection and the completion paperwork.

Questions about extensions over a garage in Hale (Greater Manchester)

Which postcodes do you cover around Hale (Greater Manchester)?

We cover Hale (Greater Manchester) (WA15) and nearby places including Altrincham, Hale Barns and Timperley, plus the rest of Greater Manchester. The first site visit is free.

How much does an extension over a garage cost in Hale (Greater Manchester)?

Our guide for North West England, which covers Hale (Greater Manchester), is £1,660–£2,420 per m² including VAT. A typical project with 3 m × 6 m of new first-floor space (18 m²) comes to about £30,000–£43,500. Design and approval fees are extra, and we fix the build price in writing once the design is agreed.

Do I need planning permission for an extension over a garage in Hale (Greater Manchester)?

Hale (Greater Manchester) is in England, so England planning rules apply. Planning permission is needed: in England, permitted development only allows single-storey extensions to the side. If in doubt, a lawful development certificate or a planning application gives you certainty before you build.

Can I add an en-suite above the garage?

Yes, and it is a common choice for a main bedroom. The en-suite needs an extract fan under Part F, a route for the soil pipe down to the drains and enough fall for the waste, which can be harder over a garage. We plan the pipe route through the garage or an outside wall early.

Do I need to convert the garage as well?

No. You can keep the garage for parking or storage and build only the room above, as long as the floor between them and any door into the house meet fire separation rules. Converting the garage at the same time is often good value, because the walls and foundations may be upgraded anyway.

Nearby

Other towns near Hale (Greater Manchester):

Other extensions in Hale (Greater Manchester)

All two-storey extension services in Hale (Greater Manchester) · Extensions over a garage across Greater Manchester

Send us your postcode and a few details. We'll get back to you to arrange a visit and talk through your options.