Extending your home in Newtown
We design and build house extensions for homes in Newtown and the surrounding Powys area, with guide prices adjusted for the region.
- Postcode districtsSY16
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation
What extensions cost in Newtown
Every figure below is a guide for Newtown, adjusted for Wales build costs (×0.93) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £24,500 – £31,000 |
| Extensions over a garage | 12 m² | £23,000 – £30,500 |
| Conservatory replacement extensions | 14 m² | £27,500 – £36,000 |
| Orangery extensions | 16 m² | £41,500 – £52,500 |
| Double-storey extensions | 32 m² | £53,500 – £70,000 |
| Kitchen extensions | 20 m² | £39,000 – £49,500 |
Newtown and surrounding towns
Site visits are available across Newtown (SY16). We also work in nearby Welshpool (11 miles), Llandrindod Wells (18 miles), Brecon (39 miles). Just over the Dyfed border, Aberystwyth is about 33 miles away.
Which extension suits a Newtown home?
Welsh housing ranges from stone terraces in the valleys to render-and-slate houses and modern estates, and the Welsh planning rules differ from England's in several places.
For many houses here, single-storey rear extensions, side return extensions or pitched roof extensions gives the most useful space for the budget.
Planning and building control in Newtown
In Wales a single-storey rear extension can usually project up to 4 m beyond the rear wall without a planning application, if it is no more than 4 m high, keeps eaves to 3 m and overall height to 4 m within 2 m of a boundary, and covers no more than half the land around the original house. Wales has no larger home extension prior approval scheme.
In Wales a single-storey side return can fall within permitted development if it stays within the 4 m height limit and the width rules for side extensions. Conservation areas and listed buildings need consent, and the Party Wall Act applies to work on or near a shared wall.
In a conservation area, national park, National Landscape or World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. Wales has its own building regulations and approved documents; the council or a registered building control approver checks the plans, inspects the work and issues a completion certificate.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
Extension types and starting prices
- Pitched roof extensions · from £20,500
- Wraparound extensions · from £33,000
- Extension plans and drawings · from £1,100
- Porch extensions · from £3,700
- Building regulations for extensions · from £800
- Glass box extensions · from £27,500
- Single-storey rear extensions · from £19,500
- Kitchen extensions · from £25,000
- Bungalow extensions · from £24,000
- Home office extensions · from £14,500
- Orangery extensions · from £27,500
- Side extensions · from £20,000
- Utility and boot room extensions · from £13,000
- Timber frame extensions · from £19,500
- Extensions over a garage · from £22,000
- Conservatory replacement extensions · from £18,500
- Flat roof extensions · from £19,500
- Planning permission for extensions · from £300
- Annexe extensions · from £51,000
- Bedroom extensions · from £24,000
- Side return extensions · from £16,500
- Double-storey extensions · from £35,000
Free site visit
We visit your Newtown home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Newtown
How much does an extension cost in Newtown?
Using our Wales factor (×0.93), a standard-spec single-storey extension of 20 m² is a guide £38,000 to £48,500 including VAT, and a 32 m² two-storey extension £53,500 to £70,000. Your written price follows the survey.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Do you cover all of Newtown?
Yes, including the surrounding parts of Powys. Site visits are free and there is no obligation.
Will my neighbours need to be told?
If you apply for planning the council notifies them, and in Wales party wall notices may be needed for work near a shared boundary.
Book a free site visit in Newtown
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.