Wales
Rear extensions in Mid Wales
Rear extensions in Mid Wales: we cover 4 towns including Newtown, Brecon and Welshpool, with design, approvals and the build under one contract.
What are homes in Mid Wales like to extend?
Older terraces near the centre and post-war semis further out are typical of Mid Wales. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
Rear extension prices in Mid Wales
Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable. Per square metre including VAT, standard specification:
| Extension | Per m² |
|---|---|
| Single-storey rear extension | £1,770–£2,880 |
| Two-storey (per m² across both floors) | £1,670–£2,510 |
| Side return | £2,140–£3,530 |
| Wraparound | £2,050–£3,350 |
| Glass-led | £2,600–£4,460 |
Planning and building rules in Mid Wales
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
In Wales a rear extension needs Building Regulations approval through the council or a registered approver, and is built to the Welsh Approved Documents, which differ from England's in places, including energy efficiency.
The Party Wall etc. Act 1996 also applies in Wales: two months' notice for work to a shared wall and one month for foundations dug close to a neighbour's building.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent.
Rear extensions we build in Mid Wales
- Rear extensions for bungalows
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Rear extension plans and planning applications
- Building Regulations for rear extensions
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
- Rear extensions for semi-detached houses
- Rear extensions for detached houses
Towns and districts in Mid Wales
The main places we cover in Mid Wales include Newtown, Brecon and Welshpool, across postcode areas LD and SY.
| Town | Postcode districts | Nearest town we also cover |
|---|---|---|
| Newtown | SY16 | Welshpool (11.8 miles) |
| Brecon | LD3 | Brynmawr (13.4 miles) |
| Welshpool | SY21 | Newtown (11.8 miles) |
| Llandrindod Wells | LD1 | Newtown (19.3 miles) |
Areas near Mid Wales
FAQ
Questions people ask
How much does a rear extension cost in Mid Wales?
As a guide, £1,770–£2,880 per square metre including VAT for a standard single-storey extension at Wales rates.
Do I need planning permission in Mid Wales?
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.
Which towns in Mid Wales do you cover?
4 towns and districts, including Newtown, Brecon and Welshpool.
Do you handle building control?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.