Street, Somerset
Rear extension planning drawings in Street
We plan and build rear extensions for homeowners in Street. 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.
Street and its postcode districts BA16 are part of our Somerset coverage. For Street 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 Street?
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 Street?
The planning route for a rear extension in Street is set by England's householder rules and your council.
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 Street like to extend?
Stone-built and rendered houses are common around Street, so matching the walling is a design decision in its own right: natural stone, reconstituted stone or a render finish across old and new.
How a rear extension in Street 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.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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 Street
From Street, the nearest places we also cover are Wells (7.0 miles) and Shepton Mallet (9.5 miles).
- Rear extension planning drawings in Wells
- Rear extension planning drawings in Shepton Mallet
- Rear extension planning drawings in Bridgwater
- Rear extension planning drawings in Yeovil
- Rear extension planning drawings in Burnham-on-Sea
Other work in Street:
FAQ
Rear extension planning drawings questions in Street
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 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 neighbours get consulted?
Yes for a full application: the council writes to them or puts up a site notice.
Do I need planning permission for a rear extension in Street?
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 Street house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What do rear extension planning drawings cost in Street?
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.