Thornaby-on-Tees, North Yorkshire
Bungalow rear extension in Thornaby-on-Tees
Single-storey rear extensions that keep everything on one level. If you live in Thornaby-on-Tees and want to know what a bungalow rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Thornaby-on-Tees is covered from our North Yorkshire round, including TS16, TS17 and TS18. For bungalows in North Yorkshire, a rear extension is the usual way to add space without adding stairs.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a bungalow rear extension cost in Thornaby-on-Tees?
A bungalow rear extension in Thornaby-on-Tees is priced at £1,660–£2,700 per square metre including VAT as a guide, before kitchen fit-out and fees. North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,000–£32,500 |
| 4 m wide × 6 m deep (24 m²) | £40,000–£65,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Thornaby-on-Tees?
Whether your bungalow rear extension in Thornaby-on-Tees needs a planning application depends on its size, your house and any local restrictions.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
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 bungalow 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.
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.
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.
Bungalow rear extensions near Thornaby-on-Tees
Neighbouring places we cover include Ingleby Barwick (1.0 miles) and Stockton-on-Tees (2.5 miles).
- Bungalow rear extension in Ingleby Barwick
- Bungalow rear extension in Stockton-on-Tees
- Bungalow rear extension in Yarm
- Bungalow rear extension in Billingham
- Bungalow rear extension in Middlesbrough
Other work in Thornaby-on-Tees:
FAQ
Bungalow rear extension questions in Thornaby-on-Tees
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.
How much does a bungalow rear extension cost in Thornaby-on-Tees?
As a guide, £1,660–£2,700 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £20,000–£32,500 at that rate. Your written price follows the survey.
Do I need to move out?
Rarely; the opening into the bungalow is made late in the build.
Is the site visit in Thornaby-on-Tees free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
What postcode areas do you cover around Thornaby-on-Tees?
Including TS16, TS17 and TS18, and the surrounding North Yorkshire area.
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.