Oxfordshire
Rear extension plans and planning applications in Oxfordshire
Measured survey, design options, planning drawings and the application, handled for you. Rear extensions in Oxfordshire: we cover 13 towns including Oxford, Banbury and Abingdon, with design, approvals and the build under one contract.
Planning applications in Oxford go to the local planning authority, and we check its local design guidance for rear extensions before drawing. Around Oxfordshire the housing ranges from inter-war semis to 1960s and 1970s estates with good-sized gardens. Many of the newer estates had permitted development rights removed by condition, so we check the planning history before anything is drawn.
What does it cost in Oxfordshire?
As a guide, £1,000–£2,500 including VAT. We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission in Oxfordshire?
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.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
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.
Councils aim to decide householder applications within 8 weeks of validation, and prior approval within 42 days.
Where in Oxfordshire do we work?
FAQ
Questions people ask
Do I need an architect?
You need accurate drawings by someone who knows householder planning; we provide them.
Can I see the design in 3D?
Yes; we produce simple 3D views so you can judge the size and light.
What if planning is refused?
We review the reasons with you, amend and resubmit (often free of a second fee within 12 months in England) or appeal.
Do you cover all of Oxfordshire?
We cover 13 towns and districts in Oxfordshire, including Oxford, Banbury and Abingdon.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.