Extensions in Tonypandy: design, planning and build
Looking to extend your home in Tonypandy? Start here: extension types, guide prices for Tonypandy, the planning rules that apply and how a project runs.
- Postcode districtsCF39, CF40, CF41, CF43
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation
Planning rules in Tonypandy
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).
Guide prices for Tonypandy
Prices on this page use our Wales factor of ×0.93, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £23,000 – £30,500 |
| Orangery extensions | 16 m² | £41,500 – £52,500 |
| Double-storey extensions | 32 m² | £53,500 – £70,000 |
| Side return extensions | 11 m² | £24,500 – £31,000 |
| Conservatory replacement extensions | 14 m² | £27,500 – £36,000 |
| Wraparound extensions | 25 m² | £53,000 – £67,500 |
Which extension suits a Tonypandy home?
In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Start by comparing pitched roof extensions, side return extensions and bungalow extensions: between them they cover most of the layouts we see requested for houses like these.
Covering Tonypandy and nearby
Site visits are available across Tonypandy (CF39, CF40, CF41, CF43). Nearby, we also take on projects in Rhondda (3 miles), Pontypridd (5 miles), Aberdare (6 miles), Maesteg (9 miles), Gelligaer (9 miles). Just over the South Glamorgan border, Cowbridge is about 11 miles away.
Extension types and starting prices
- Conservatory replacement extensions · from £18,500
- Side return extensions · from £16,500
- Flat roof extensions · from £19,500
- Extension plans and drawings · from £1,100
- Pitched roof extensions · from £20,500
- Kitchen extensions · from £25,000
- Timber frame extensions · from £19,500
- Annexe extensions · from £51,000
- Home office extensions · from £14,500
- Double-storey extensions · from £35,000
- Bungalow extensions · from £24,000
- Extensions over a garage · from £22,000
- Bedroom extensions · from £24,000
- Planning permission for extensions · from £300
- Single-storey rear extensions · from £19,500
- Wraparound extensions · from £33,000
- Utility and boot room extensions · from £13,000
- Porch extensions · from £3,700
- Glass box extensions · from £27,500
- Orangery extensions · from £27,500
- Side extensions · from £20,000
- Building regulations for extensions · from £800
Free site visit
We visit your Tonypandy home, measure up, talk through what you want and check the planning position.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Tonypandy
How much does an extension cost in Tonypandy?
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.
How long does an extension take in Tonypandy?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Tonypandy, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you cover all of Tonypandy?
Yes, including the surrounding parts of Mid Glamorgan. Site visits are free and there is no obligation.
Book a free site visit in Tonypandy
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.