Bridgend, South Wales Valleys
Two-storey rear extension in Bridgend
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Bridgend and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Bridgend and its postcode districts CF31 and CF35 are part of our South Wales Valleys coverage. Two-storey rear extensions suit semi-detached houses in Bridgend best, where the extra bedroom matters as much as the bigger kitchen.
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 two-storey rear extension cost in Bridgend?
A two-storey rear extension in Bridgend is priced at £1,670–£2,510 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £50,000–£75,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £80,500–£120,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Bridgend?
Planning for a two-storey rear extension in Bridgend follows the Welsh householder rules.
Welsh rules allow a two-storey rear extension without an application only where the ground floor is no deeper than 4 metres, the upper floor no deeper than 3 metres and at least 10.5 metres remains to the rear boundary. Most homeowners still apply for householder planning permission.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings 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 Bridgend like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Bridgend. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a two-storey rear extension in Bridgend 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents 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.
Two-storey rear extensions near Bridgend
Neighbouring places we cover include Coity (1.5 miles) and Aberkenfig (2.5 miles).
- Two-storey rear extension in Coity
- Two-storey rear extension in Aberkenfig
- Two-storey rear extension in Pyle
- Two-storey rear extension in Porthcawl
- Two-storey rear extension in Llantwit Major
Other work in Bridgend:
FAQ
Two-storey rear extension questions in Bridgend
Can you match the brick or stone on my Bridgend house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Do you handle building control in Bridgend?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Can I add an en-suite upstairs?
Yes. We plan the soil pipe route early so the bathroom sits where drainage works without boxing through the room below.
Is the site visit in Bridgend free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How much does a two-storey rear extension cost in Bridgend?
As a guide, £1,670–£2,510 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £50,000–£75,500 at that rate. Your written price follows the survey.
How long does a rear extension take to build in Bridgend?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.