Diss, Norfolk
Rear extension planning drawings in Diss
For homes in Diss, 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.
Diss is covered from our Norfolk round, including IP22. Rear extension applications in Norfolk 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 Diss?
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 Diss?
Whether your rear extension in Diss 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. 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 Diss like to extend?
Diss mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a rear extension in Diss 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Diss
Close by, we work in Attleborough, about 10.5 miles away, and Stowmarket, about 13.8 miles away.
- Rear extension planning drawings in Attleborough
- Rear extension planning drawings in Stowmarket
- Rear extension planning drawings in Thetford
- Rear extension planning drawings in Bowthorpe
- Rear extension planning drawings in Bury St Edmunds
Other work in Diss:
FAQ
Rear extension planning drawings questions in Diss
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.
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.
Can planning conditions affect the build?
Yes, for example matching materials or obscure glazing. We plan for them.
Do you handle building control in Diss?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What do rear extension planning drawings cost in Diss?
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 you match the brick or stone on my Diss house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.