Enfield Lock, Hertfordshire
Rear extension planning drawings in Enfield Lock
We plan and build rear extensions for homeowners in Enfield Lock. Measured survey, design options, planning drawings and the application, handled for you. Start with a free site visit, then a written price once the design is agreed.
We cover Enfield Lock (EN1, EN2 and EN3) as part of our Hertfordshire work. For Enfield Lock homes we start with a measured survey, then draw options before anything is submitted.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
What do rear extension planning drawings cost in Enfield Lock?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension, or £2,000–£3,500 for a two-storey scheme. A householder planning application in England costs £548 (£575 for applications made from 8 December 2026), and a lawful development certificate for proposed work costs half the householder fee. 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 rear extension in Enfield Lock?
Whether your rear extension in Enfield Lock needs a planning application depends on its size, your house and any local restrictions.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Councils aim to decide householder applications within 8 weeks of validation, and prior approval within 42 days.
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 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 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Rear extension planning drawings near Enfield Lock
From Enfield Lock, the nearest places we also cover are Waltham Cross (1.1 miles) and Waltham Abbey (1.5 miles).
- Rear extension planning drawings in Waltham Cross
- Rear extension planning drawings in Waltham Abbey
- Rear extension planning drawings in Ponders End
- Rear extension planning drawings in Cheshunt
- Rear extension planning drawings in Enfield Town
Other work in Enfield Lock:
FAQ
Rear extension planning drawings questions in Enfield Lock
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 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 I see the design in 3D?
Yes; we produce simple 3D views so you can judge the size and light.
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.
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.
Can you match the brick or stone on my Enfield Lock house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.