Derby, Derbyshire
Terraced house rear extension in Derby
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Derby 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.
Derby is covered from our Derbyshire round, including DE1, DE3, DE21 and DE22. In Derby 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 Derby?
A terraced house rear extension in Derby is priced at £1,990–£3,200 per square metre including VAT as a guide, before kitchen fit-out and fees. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £27,000–£43,000 |
| 3 m wide × 6 m deep (18 m²) | £36,000–£57,500 |
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 Derby?
Here is how the rules in England apply to a terraced house rear extension in Derby.
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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Derby like to extend?
Derby has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a terraced house rear extension in Derby comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Derby
From Derby, the nearest places we also cover are Chaddesden (1.8 miles) and Oakwood (2.4 miles).
- Terraced house rear extension in Chaddesden
- Terraced house rear extension in Oakwood
- Terraced house rear extension in Sinfin
- Terraced house rear extension in Belper
- Terraced house rear extension in Ilkeston
Other work in Derby:
FAQ
Terraced house rear extension questions in Derby
Do you handle building control in Derby?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is the site visit in Derby free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How deep can I go on a terrace?
3 metres under permitted development in England, or up to 6 metres with prior approval outside designated land.
What postcode areas do you cover around Derby?
Including DE1, DE3, DE21, DE22, DE23 and DE24, and the surrounding Derbyshire area.
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.
How long does a rear extension take to build in Derby?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.