Waltham Cross, Hertfordshire
Terraced house rear extension in Waltham Cross
For homes in Waltham Cross, 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 Waltham Cross (EN7, EN8 and EN10) as part of our Hertfordshire work. On a Waltham Cross 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 Waltham Cross?
Guide prices for a terraced house rear extension in Waltham Cross start from our East of England rate of £2,170–£3,500 per square metre, including VAT. 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 Waltham Cross?
The planning route for a terraced house rear extension in Waltham Cross is set by England's householder rules and your council.
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. 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 Waltham Cross like to extend?
Waltham Cross 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 Waltham Cross 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.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Waltham Cross
From Waltham Cross, the nearest places we also cover are Cheshunt (1.0 miles) and Enfield Lock (1.1 miles).
- Terraced house rear extension in Cheshunt
- Terraced house rear extension in Enfield Lock
- Terraced house rear extension in Waltham Abbey
- Terraced house rear extension in Ponders End
- Terraced house rear extension in Enfield Town
Other work in Waltham Cross:
FAQ
Terraced house rear extension questions in Waltham Cross
How long does a rear extension take to build in Waltham Cross?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
How much does a terraced house rear extension cost in Waltham Cross?
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.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
Do I need planning permission for a rear extension in Waltham Cross?
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.
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.
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.