Conservatory replacement extensions in Renfrewshire and Inverclyde
Our design and build teams take on conservatory replacements in Renfrewshire and Inverclyde, from the first measured survey through planning and building control to the finished room.
- Guide priceFrom £19,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Towns covered7
- Site visitFree, no obligation
Guide prices for Renfrewshire and Inverclyde
These guide figures apply our Scotland adjustment (×0.98) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Renfrewshire and Inverclyde: £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.
For a figure based on your own dimensions, use our guide-price tool.
Planning rules that apply in Renfrewshire and Inverclyde
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.
Homes in conservation areas, national scenic areas and listed buildings have tighter rules, so we always check the property's status and planning history before design starts.
Building close to a public sewer needs the agreement of Scottish Water, which we check during design.
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.
Applications are decided by your council as planning authority.
What is included
- Glazing and doors to suit the new room
- Opening widened into the house if wanted
- New or upgraded foundations
- Trial holes to check the existing foundations
- Insulated walls and roof to current regulations
- Removal and disposal of the old conservatory
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.
Extensions in and around Renfrewshire and Inverclyde
Towns we cover in Renfrewshire and Inverclyde include Paisley, Greenock, Newton Mearns, Renfrew, Barrhead, Johnstone, Erskine. Scotland's housing includes sandstone villas, terraces and tenements in the cities and plenty of post-war and modern houses and bungalows elsewhere. A building warrant is needed before work starts.
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
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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 people ask about conservatory replacements
Do you cover all of Renfrewshire and Inverclyde?
Yes, across the whole of Renfrewshire and Inverclyde. Site visits are free and there is no obligation.
How long does a conservatory replacement take to build in Renfrewshire and Inverclyde?
On site, typically 8 to 14 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.
Do I need building regulations approval in Renfrewshire and Inverclyde?
Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.
Does replacing a conservatory need planning permission?
A solid replacement is treated as a new extension, so it must meet the permitted development limits or get planning permission, and it always needs building regulations approval.
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.
Book a free site visit in Renfrewshire and Inverclyde
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.