Conservatory replacement extensions in Renfrew: design, approvals and build
We design and build conservatory replacements for houses in Renfrew, with a written price once the survey and design are done and one point of contact throughout.
- Guide price in RenfrewFrom £19,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time8–14 weeks on site
- Postcode districtsPA1, PA4
Covering Renfrew
Site visits are available across Renfrew (PA1, PA4). We also work in nearby Erskine (3 miles), Paisley (3 miles), Barrhead (5 miles), Johnstone (6 miles).
For homes towards Dunbartonshire, Clydebank is around 2 miles away. Across Scotland, extensions follow Scottish planning and building standards, including the building warrant process, which we build into the programme from the start.
Conservatory replacement prices in Renfrew
For Renfrew we adjust our national guide rates by ×0.98, the factor we use for Scotland. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Renfrew: £1,810 to £3,430 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 3.3 m 10 m² | £19,500 – £23,500 | £21,000 – £27,000 | £26,500 – £34,500 |
| 3.5 m × 4 m 14 m² | £25,000 – £30,500 | £29,000 – £38,000 | £37,500 – £48,500 |
| 4 m × 5 m 20 m² | £36,000 – £43,500 | £42,000 – £54,000 | £53,500 – £69,000 |
Includes removal of the old conservatory. Reusing existing foundations is only possible after investigation.
Want a range for your exact size? The guide-price tool takes about a minute.
Do I need planning permission in Renfrew?
In Scotland, householder permitted development rules (Class 1A for single-storey ground-floor extensions and Class 1B for extensions of more than one storey) allow some smaller extensions without a planning application, within limits on depth, height and distance from the boundary. Conservation areas and listed buildings are more restricted.
The planning position for a specific Renfrew address depends on its history and any designations, which is why we check it at the first visit.
In Scotland a building warrant from the council is needed before work starts on almost any extension, and a completion certificate is issued when the work is accepted. Building standards are set in the Scottish technical handbooks.
Scotland has no Party Wall Act. Where work affects a shared wall or a neighbour's land, we agree access, protection and making good with your neighbour in writing before work starts.
Applications are decided by your council as planning authority.
Is a conservatory replacement right for your house?
- Homes where the conservatory sits unused
- Conservatories that are too hot or too cold
- Older uPVC conservatories near the end of their life
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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Your questions about a conservatory replacement in Renfrew
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Renfrew, 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 Renfrew?
Yes. We cover Renfrew and the surrounding parts of Renfrewshire and Inverclyde. Site visits are free and there is no obligation.
Will my neighbours in Renfrew be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
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 £1,810 to £3,430 per m² including VAT, including removal.
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.
Book a free site visit in Renfrew
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.