Borehamwood, Hertfordshire
Terraced house rear extension in Borehamwood
We plan and build rear extensions for terraced houses for homeowners in Borehamwood. Rear and side return extensions for terraces, with access through the house and two neighbours. Start with a free site visit, then a written price once the design is agreed.
Borehamwood sits in Hertfordshire, with postcode districts including WD6. Terraced streets make up much of the housing in parts of Hertfordshire, and most rear extensions here go in without side access.
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 Borehamwood?
For Borehamwood we work from the East of England rate: £2,170–£3,500 per square metre of new floor, including VAT, standard specification. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £29,500–£47,000 |
| 3 m wide × 6 m deep (18 m²) | £39,000–£63,000 |
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 Borehamwood?
Here is how the rules in England apply to a terraced house rear extension in Borehamwood.
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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Borehamwood like to extend?
Post-war semis and newer estates are typical of Borehamwood, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance.
How a terraced house rear extension in Borehamwood 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Borehamwood
Neighbouring places we cover include Barnet (3.3 miles) and Totteridge (3.6 miles).
- Terraced house rear extension in Barnet
- Terraced house rear extension in Totteridge
- Terraced house rear extension in Bushey
- Terraced house rear extension in Harrow Weald
- Terraced house rear extension in New Barnet
Other work in Borehamwood:
FAQ
Terraced house rear extension questions in Borehamwood
What postcode areas do you cover around Borehamwood?
Including WD6, and the surrounding Hertfordshire area.
Is the site visit in Borehamwood free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How do you keep the house clean?
Dust screens, floor protection and a single protected route through the house.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Can you match the brick or stone on my Borehamwood house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How much does a terraced house rear extension cost in Borehamwood?
As a guide, £2,170–£3,500 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £29,500–£47,000 at that rate. Your written price follows the survey.