Conservatory replacement extensions in Greenock
Our design and build teams take on conservatory replacements in Greenock, from the first measured survey through planning and building control to the finished room.
- Guide price in GreenockFrom £19,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time8–14 weeks on site
- Postcode districtsPA15, PA16, PA19

Working in Greenock
Across PA15, PA16, PA19, we can visit, measure and advise. Neighbouring towns we cover include Erskine (12 miles), Johnstone (13 miles), Paisley (15 miles), Renfrew (15 miles).
Helensburgh, in Argyll and Bute, is roughly 5 miles from Greenock and also on our list. Across Scotland, extensions follow Scottish planning and building standards, including the building warrant process, which we build into the programme from the start.
Will the council need to approve it?
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. Separately, almost every extension needs a building warrant from the council before work starts.
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.
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.
How much does a conservatory replacement cost in Greenock?
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 Greenock: £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.
What is included
- New or upgraded foundations
- Opening widened into the house if wanted
- Insulated walls and roof to current regulations
- Removal and disposal of the old conservatory
- Trial holes to check the existing foundations
- 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.
Our process, step by step
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
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
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.
Common questions in Greenock
Do you cover all of Greenock?
Yes. We cover Greenock and the surrounding parts of Renfrewshire and Inverclyde. Site visits are free and there is no obligation.
Do I need building regulations approval in Greenock?
Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Greenock, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
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 Greenock
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.