Darlington, County Durham
Terraced house rear extension in Darlington
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Darlington and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Darlington (DL1, DL2 and DL3) as part of our County Durham work. In Darlington 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 Darlington?
Guide prices for a terraced house rear extension in Darlington start from our North East England rate of £1,840–£2,970 per square metre, including VAT. North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £25,000–£40,000 |
| 3 m wide × 6 m deep (18 m²) | £33,000–£53,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a terraced house rear extension in Darlington?
Planning for a terraced house rear extension in Darlington follows the English householder rules.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
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 Darlington like to extend?
Brick terraces, colliery houses and post-war semis make up much of Darlington. Former mining areas often need a coal mining risk check before foundations are designed.
How a terraced house rear extension in Darlington 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.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Terraced house rear extensions near Darlington
Neighbouring places we cover include Newton Aycliffe (6.6 miles) and Yarm (7.9 miles).
- Terraced house rear extension in Newton Aycliffe
- Terraced house rear extension in Yarm
- Terraced house rear extension in Ingleby Barwick
- Terraced house rear extension in Stockton-on-Tees
- Terraced house rear extension in Thornaby-on-Tees
Other work in Darlington:
FAQ
Terraced house rear extension questions in Darlington
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Do I need planning permission for a rear extension in Darlington?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Do both neighbours need party wall notices?
Usually yes in England and Wales, because the extension often sits on or near both boundaries.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
How long does a rear extension take to build in Darlington?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can you match the brick or stone on my Darlington house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.