Bishops Stortford, Hertfordshire
Bungalow rear extension in Bishops Stortford
Single-storey rear extensions that keep everything on one level. We design, get the approvals for and build rear extensions for bungalows in Bishops Stortford and the surrounding area, with one contract from the first survey to building control sign-off.
Bishops Stortford and its postcode districts CM23 are part of our Hertfordshire coverage. For bungalows in Hertfordshire, a rear extension is the usual way to add space without adding stairs.
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 Bishops Stortford?
In Bishops Stortford, our guide for a bungalow rear extension is £1,960–£3,180 per square metre including VAT for a 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 Bishops Stortford?
The planning route for a bungalow rear extension in Bishops Stortford 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.
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. 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 Bishops Stortford like to extend?
Post-war semis and newer estates are typical of Bishops Stortford, 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 bungalow rear extension in Bishops Stortford 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Bishops Stortford
From Bishops Stortford, the nearest places we also cover are Harlow (6.8 miles) and Ware (9.0 miles).
- Bungalow rear extension in Harlow
- Bungalow rear extension in Ware
- Bungalow rear extension in Hoddesdon
- Bungalow rear extension in Saffron Walden
- Bungalow rear extension in Hertford
Other work in Bishops Stortford:
FAQ
Bungalow rear extension questions in Bishops Stortford
Do you handle building control in Bishops Stortford?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
How much does a bungalow rear extension cost in Bishops Stortford?
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.
Is a bungalow extension cheaper?
The rates are similar per square metre; roof work can add a little.
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.
How long does a rear extension take to build in Bishops Stortford?
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 match the brick or stone on my Bishops Stortford house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.