Wellingborough, Northamptonshire
Rear extension planning drawings in Wellingborough
For homes in Wellingborough, a rear extension is often the simplest way to gain space without moving. Measured survey, design options, planning drawings and the application, handled for you. We take it from survey to completion certificate.
We cover Wellingborough (NN8) as part of our Northamptonshire work. Rear extension applications in Northamptonshire 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 Wellingborough?
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. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a rear extension in Wellingborough?
The planning route for a rear extension in Wellingborough is set by England's householder rules and your council.
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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Wellingborough like to extend?
Wellingborough has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a rear extension in Wellingborough comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Rear extension planning drawings near Wellingborough
From Wellingborough, the nearest places we also cover are Rushden (4.0 miles) and Kettering (6.7 miles).
- Rear extension planning drawings in Rushden
- Rear extension planning drawings in Kettering
- Rear extension planning drawings in Northampton
- Rear extension planning drawings in Desborough
- Rear extension planning drawings in Corby
Other work in Wellingborough:
FAQ
Rear extension planning drawings questions in Wellingborough
Is the site visit in Wellingborough free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Wellingborough?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
What do rear extension planning drawings cost in Wellingborough?
As a guide, £1,000–£2,500 including VAT for a single-storey rear extension and £2,000–£3,500 for a two-storey scheme, covering the measured survey, design options and the application. The council fee is extra.
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.