Thornaby-on-Tees, North Yorkshire
Rear extension planning drawings in Thornaby-on-Tees
Rear extension planning drawings in Thornaby-on-Tees: measured survey, design options, planning drawings and the application, handled for you. We measure the house, show you what the rules allow, price it in writing and build it.
Thornaby-on-Tees and its postcode districts TS16, TS17 and TS18 are part of our North Yorkshire coverage. Rear extension applications in North Yorkshire 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 Thornaby-on-Tees?
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 Thornaby-on-Tees?
Planning for a rear extension in Thornaby-on-Tees follows the English householder rules.
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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Thornaby-on-Tees like to extend?
Brick terraces, colliery houses and post-war semis make up much of Thornaby-on-Tees. Former mining areas often need a coal mining risk check before foundations are designed.
How a rear extension in Thornaby-on-Tees comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
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 Thornaby-on-Tees
Neighbouring places we cover include Ingleby Barwick (1.0 miles) and Stockton-on-Tees (2.5 miles).
- Rear extension planning drawings in Ingleby Barwick
- Rear extension planning drawings in Stockton-on-Tees
- Rear extension planning drawings in Yarm
- Rear extension planning drawings in Billingham
- Rear extension planning drawings in Middlesbrough
Other work in Thornaby-on-Tees:
FAQ
Rear extension planning drawings questions in Thornaby-on-Tees
Can you match the brick or stone on my Thornaby-on-Tees house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How long does a rear extension take to build in Thornaby-on-Tees?
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 I see the design in 3D?
Yes; we produce simple 3D views so you can judge the size and light.
What do rear extension planning drawings cost in Thornaby-on-Tees?
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.
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.
Do I need planning permission for a rear extension in Thornaby-on-Tees?
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.