Waltham Cross, Hertfordshire
Rear extension planning drawings in Waltham Cross
We plan and build rear extensions for homeowners in Waltham Cross. 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.
Waltham Cross is covered from our Hertfordshire round, including EN7, EN8 and EN10. Rear extension applications in Hertfordshire are householder applications, which councils aim to decide within about eight weeks.
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 Waltham Cross?
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. These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a rear extension in Waltham Cross?
Planning for a rear extension in Waltham Cross follows the English householder rules.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
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 Waltham Cross like to extend?
Post-war semis and newer estates are typical of Waltham Cross, 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 Waltham Cross 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.
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 Waltham Cross
Neighbouring places we cover include Cheshunt (1.0 miles) and Enfield Lock (1.1 miles).
- Rear extension planning drawings in Cheshunt
- Rear extension planning drawings in Enfield Lock
- Rear extension planning drawings in Waltham Abbey
- Rear extension planning drawings in Ponders End
- Rear extension planning drawings in Enfield Town
Other work in Waltham Cross:
FAQ
Rear extension planning drawings questions in Waltham Cross
Do you handle building control in Waltham Cross?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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 planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
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 Waltham Cross?
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 Waltham Cross house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.