West Watford, Hertfordshire
Terraced house rear extension in West Watford
For homes in West Watford, a terraced house rear extension is often the simplest way to gain space without moving. Rear and side return extensions for terraces, with access through the house and two neighbours. We take it from survey to completion certificate.
We cover West Watford (WD1, WD17 and WD18) as part of our Hertfordshire work. On a West Watford terrace both neighbours usually need party wall notices or agreement, so we talk to them early.
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 West Watford?
A terraced house rear extension in West Watford is priced at £2,170–£3,500 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
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 West Watford?
Here is how the rules in England apply to a terraced house rear extension in West Watford.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is 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 West Watford like to extend?
West Watford mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a terraced house rear extension in West Watford comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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 West Watford
From West Watford, the nearest places we also cover are Watford (0.9 miles) and North Watford (1.9 miles).
- Terraced house rear extension in Watford
- Terraced house rear extension in North Watford
- Terraced house rear extension in Croxley Green
- Terraced house rear extension in Bushey
- Terraced house rear extension in Batchworth
Other work in West Watford:
FAQ
Terraced house rear extension questions in West Watford
What postcode areas do you cover around West Watford?
Including WD1, WD17 and WD18, and the surrounding Hertfordshire area.
How long does a rear extension take to build in West Watford?
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 build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
Is the site visit in West Watford free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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 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.