Conservatory replacement extensions for homes in Rhondda
Planning a conservatory replacement in Rhondda? We survey the house, work out the planning route, draw the design and build it, so you deal with one team from the first visit to the completion certificate.
- Guide price in RhonddaFrom £18,500 inc VAT
- PlanningWelsh permitted development rules (rear up to 4 m)
- Build time8–14 weeks on site
- Postcode districtsCF40, CF41, CF42, CF43

Do I need planning permission in Rhondda?
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 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.
The Party Wall etc. Act 1996 applies in Wales as in England: notice must be served before work to a shared wall, building on the boundary, or excavating close to a neighbour's foundations.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
Extensions in and around Rhondda
Our survey diary covers Rhondda, including CF40, CF41, CF42, CF43. Neighbouring towns we cover include Tonypandy (3 miles), Aberdare (4 miles), Pontypridd (6 miles), Merthyr Tydfil (7 miles).
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.
What we take care of
- Insulated walls and roof to current regulations
- New or upgraded foundations
- Trial holes to check the existing foundations
- Opening widened into the house if wanted
- Removal and disposal of the old conservatory
- Glazing and doors to suit the new room
A replacement is a chance to rethink the shape. Many conservatories are oddly proportioned; for a similar cost the new room can often be squarer, wider or better connected to the kitchen.
How much does a conservatory replacement cost in Rhondda?
Labour and material costs vary across the UK, so for Rhondda we use our Wales factor (×0.93). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Rhondda: £1,720 to £3,260 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 3.3 m 10 m² | £18,500 – £22,500 | £19,500 – £26,000 | £25,500 – £33,000 |
| 3.5 m × 4 m 14 m² | £24,000 – £29,000 | £27,500 – £36,000 | £35,500 – £46,000 |
| 4 m × 5 m 20 m² | £34,000 – £41,000 | £39,500 – £51,500 | £51,000 – £65,500 |
Includes removal of the old conservatory. Reusing existing foundations is only possible after investigation.
Try the guide-price tool to see a range for your own size and finish.
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Conservatory replacement questions answered
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Rhondda, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do you cover all of Rhondda?
Yes. We cover Rhondda and the surrounding parts of Mid Glamorgan. Site visits are free and there is no obligation.
Who do I contract with for a conservatory replacement in Rhondda?
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 keep the existing base?
Sometimes, but conservatory bases are often too shallow for solid walls. Trial holes tell us before we confirm the price.
Is it worth replacing a conservatory with an extension?
If the conservatory is unusable for much of the year, usually yes. A solid extension gives a heated room that counts as proper living space. Our guide range is about £1,720 to £3,260 per m² including VAT, including removal.
Book a free site visit in Rhondda
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.