Enfield Lock, Hertfordshire
Bungalow rear extension in Enfield Lock
Single-storey rear extensions that keep everything on one level. We design, get the approvals for and build rear extensions for bungalows in Enfield Lock and the surrounding area, with one contract from the first survey to building control sign-off.
We cover Enfield Lock (EN1, EN2 and EN3) as part of our Hertfordshire work. 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 Enfield Lock?
In Enfield Lock, 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Enfield Lock?
Whether your bungalow rear extension in Enfield Lock needs a planning application depends on its size, your house and any local restrictions.
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.
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. 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 Enfield Lock like to extend?
Post-war semis and newer estates are typical of Enfield Lock, 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 Enfield Lock 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.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Bungalow rear extensions near Enfield Lock
From Enfield Lock, the nearest places we also cover are Waltham Cross (1.1 miles) and Waltham Abbey (1.5 miles).
- Bungalow rear extension in Waltham Cross
- Bungalow rear extension in Waltham Abbey
- Bungalow rear extension in Ponders End
- Bungalow rear extension in Cheshunt
- Bungalow rear extension in Enfield Town
Other work in Enfield Lock:
FAQ
Bungalow rear extension questions in Enfield Lock
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.
How much does a bungalow rear extension cost in Enfield Lock?
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.
How deep can I extend?
The same limits as a house: 3 or 4 metres in England, more with prior approval.
Do you handle building control in Enfield Lock?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Enfield Lock?
Including EN1, EN2 and EN3, and the surrounding Hertfordshire area.
Do I need planning permission for a rear extension in Enfield Lock?
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.