Risca, South Wales Valleys
Two-storey rear extension in Risca
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We design, get the approvals for and build two-storey rear extensions in Risca and the surrounding area, with one contract from the first survey to building control sign-off.
Risca sits in the South Wales Valleys, with postcode districts including NP11. In the South Wales Valleys we check the neighbours' rear windows first, because the upper floor is where most two-storey schemes win or lose planning.
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 Risca?
In Risca, our guide for a two-storey rear extension is £1,670–£2,510 per square metre including VAT for a standard specification. 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 |
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 two-storey rear extension in Risca?
Whether your two-storey rear extension in Risca needs a planning application depends on its size, your house and any local restrictions.
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 Risca like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Risca. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a two-storey rear extension in Risca 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Two-storey rear extensions near Risca
Neighbouring places we cover include Abercarn (3.1 miles) and Newport (4.6 miles).
- Two-storey rear extension in Abercarn
- Two-storey rear extension in Newport
- Two-storey rear extension in Cwmbran
- Two-storey rear extension in Caerphilly
- Two-storey rear extension in Blackwood
Other work in Risca:
FAQ
Two-storey rear extension questions in Risca
How much does a two-storey rear extension cost in Risca?
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.
Can you match the brick or stone on my Risca house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Does a two-storey rear extension need planning permission?
Almost always. England and Northern Ireland allow 3 metres without an application only if at least 7 metres remains to the rear boundary; Wales and Scotland are similar or stricter.
What postcode areas do you cover around Risca?
Including NP11, and the surrounding South Wales Valleys area.
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.
Do I need planning permission for a rear extension in Risca?
Often not for a single-storey rear extension of up to 4 metres under Welsh permitted development. Wales has no prior approval route for deeper extensions.