Borehamwood, Hertfordshire
Bungalow rear extension in Borehamwood
Single-storey rear extensions that keep everything on one level. We design, get the approvals for and build rear extensions for bungalows in Borehamwood and the surrounding area, with one contract from the first survey to building control sign-off.
Borehamwood is covered from our Hertfordshire round, including WD6. For Borehamwood 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 Borehamwood?
For Borehamwood we work from the East of England rate: £1,960–£3,180 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 m deep (12 m²) | £23,500–£38,000 |
| 4 m wide × 6 m deep (24 m²) | £47,000–£76,500 |
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 bungalow rear extension in Borehamwood?
Whether your bungalow rear extension in Borehamwood needs a planning application depends on its size, your house and any local restrictions.
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.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
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?
Borehamwood mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a bungalow rear extension in Borehamwood 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.
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.
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 Borehamwood
From Borehamwood, the nearest places we also cover are Barnet (3.3 miles) and Totteridge (3.6 miles).
- Bungalow rear extension in Barnet
- Bungalow rear extension in Totteridge
- Bungalow rear extension in Bushey
- Bungalow rear extension in Harrow Weald
- Bungalow rear extension in New Barnet
Other work in Borehamwood:
FAQ
Bungalow rear extension questions in Borehamwood
What postcode areas do you cover around Borehamwood?
Including WD6, and the surrounding Hertfordshire area.
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 deep can I extend?
The same limits as a house: 3 or 4 metres in England, more with prior approval.
Is the site visit in Borehamwood free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.
Do you handle building control in Borehamwood?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.