Knowle, West Midlands
Terraced house rear extension in Knowle
Terraced house rear extension in Knowle: rear and side return extensions for terraces, with access through the house and two neighbours. We measure the house, show you what the rules allow, price it in writing and build it.
Knowle is covered from our West Midlands round, including B40. In Knowle we plan the delivery route through the house and the skip licence before anything else.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a terraced house rear extension cost in Knowle?
In Knowle, our guide for a terraced house rear extension is £2,050–£3,300 per square metre including VAT for a standard specification. The West Midlands is the baseline for our guide prices.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £27,500–£44,500 |
| 3 m wide × 6 m deep (18 m²) | £37,000–£59,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a terraced house rear extension in Knowle?
Planning for a terraced house rear extension in Knowle follows the English householder rules.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Knowle like to extend?
Knowle has a lot of post-war semis and estate houses with long gardens and side access, which makes rear extensions quicker to build.
How a terraced house rear extension in Knowle comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Terraced house rear extensions near Knowle
From Knowle, the nearest places we also cover are Solihull (2.9 miles) and Shirley (4.1 miles).
- Terraced house rear extension in Solihull
- Terraced house rear extension in Shirley
- Terraced house rear extension in Acocks Green
- Terraced house rear extension in Chelmsley Wood
- Terraced house rear extension in Kenilworth
Other work in Knowle:
FAQ
Terraced house rear extension questions in Knowle
Do you handle building control in Knowle?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Do both neighbours need party wall notices?
Usually yes in England and Wales, because the extension often sits on or near both boundaries.
What postcode areas do you cover around Knowle?
Including B40, and the surrounding West Midlands area.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Can you match the brick or stone on my Knowle house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.