Home Extensions

Rear extensions in Manchester

Open the back of your house onto the garden with a bright, practical rear extension.

Permitted development
3m attached, 4m detached
Prior approval
Up to 6m or 8m
Typical time on site
8 to 14 weeks
Quote
Free site visit
Brick rear extension with a pitched tiled roof and black sliding doors on a semi-detached house in Manchester

Rear extensions are the most common type of extension we build in Manchester. They suit almost every house, from Victorian terraces in Chorlton and Levenshulme to 1930s semis in Burnage and Gatley. Most add a larger kitchen-diner or family room, with wide doors onto the garden.

A rear extension can be single or double-storey, with a flat or pitched roof. We take care of drawings, approvals and the full build as part of our extensions service.

Rear extensions and permitted development

A single-storey rear extension up to 3 metres deep (semi-detached and terraced houses) or 4 metres (detached houses) is usually permitted development, as long as it is no more than 4 metres high and meets the other conditions. The larger home extension scheme allows 6 or 8 metres through prior approval from the council, with neighbours consulted. See what size rear extension you can build without planning permission.

Is a rear extension worth it?

For most families, yes. A well-designed rear extension can transform how a home works and is often far cheaper than moving. We look at this in detail, including the questions to ask an estate agent first, in is a rear extension worth it in Manchester?

What is included

  • Open-plan living

    Knock through to create one big kitchen, dining and living space.

  • Garden access

    Bi-fold or sliding doors across the full width.

  • Roof lanterns

    Daylight from above to brighten the middle of the house.

  • Approvals handled

    Permitted development, prior approval or planning.

How your rear extension project runs

The same clear process on every job, whatever the size.

  1. Free site visit

    We come to you, measure up and talk through what you want, what is possible and a realistic budget.

  2. Written quote

    A detailed, itemised quote with no hidden costs, so you know exactly what is included before you commit.

  3. Drawings and approvals

    We line up drawings, structural calculations, planning or permitted development, Building Control and party wall notices.

  4. The build

    One point of contact, a tidy and safe site, and regular updates so you always know what is happening next.

  5. Sign-off and handover

    Building Control completion, snagging and a final walk-round together before we hand back your home.

5.0

Rated 5.0 out of 5 by our clients on Google.

Read our reviews on Google

“Builders Manchester Ltd recently completed an extension and loft conversion at my property. Their work was of an excellent standard from start to finish.”

Jake RobertsExtension and loft conversion, Google review

Rear extensions across Greater Manchester

We build rear extensions throughout south Manchester, Stockport and Trafford. Choose your area for local planning notes.

Rear extensions: common questions

More answers on our FAQ page.

How far can I extend at the back without planning permission?

Usually 3 metres for a semi-detached or terraced house and 4 metres for a detached house, measured from the original rear wall, with a 4 metre maximum height. Prior approval can increase this to 6 or 8 metres.

What does the original rear wall mean?

It is the back wall of the house as it was first built, or as it stood on 1 July 1948 if older. Any earlier extensions count towards your allowance.

Can a rear extension be two storeys?

Yes. Two-storey rear extensions usually need planning permission unless they are no deeper than 3 metres and at least 7 metres from the rear boundary.

Get a free, no-obligation quote

Tell us about your project and we will arrange a free site visit, then send you a detailed written quote.

Family-run and based in Didsbury. About us or see our work.

We aim to reply within one working day. We only use your details to respond to your enquiry. Privacy policy

07487 891706