Waltham Cross, Hertfordshire
Bungalow rear extension in Waltham Cross
Single-storey rear extensions that keep everything on one level. If you live in Waltham Cross and want to know what a bungalow rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Waltham Cross and its postcode districts EN7, EN8 and EN10 are part of our Hertfordshire coverage. For Waltham Cross bungalows we design the roof first, because the low eaves decide the height of the new room.
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 bungalow rear extension cost in Waltham Cross?
Guide prices for a bungalow rear extension in Waltham Cross start from our East of England rate of £1,960–£3,180 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 m deep (12 m²) | £23,500–£38,000 |
| 4 m wide × 6 m deep (24 m²) | £47,000–£76,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a bungalow rear extension in Waltham Cross?
The planning route for a bungalow rear extension in Waltham Cross is set by England's householder rules and your council.
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.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
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 bungalow 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Bungalow 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).
- Bungalow rear extension in Cheshunt
- Bungalow rear extension in Enfield Lock
- Bungalow rear extension in Waltham Abbey
- Bungalow rear extension in Ponders End
- Bungalow rear extension in Enfield Town
Other work in Waltham Cross:
FAQ
Bungalow rear extension questions in Waltham Cross
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
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 a bungalow extension be fully accessible?
Yes: level thresholds, wider doors and a wet room are straightforward to design in.
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.
Can you match the brick or stone on my Waltham Cross 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 bungalow rear extension cost in Waltham Cross?
As a guide, £1,960–£3,180 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £23,500–£38,000 at that rate. Your written price follows the survey.