Porch extensions for homes in Renfrew
If you live in Renfrew and want more space without moving, a porch extension is one of the most practical ways to get it. We handle the drawings, approvals and the build.
- Guide price in RenfrewFrom £3,900 inc VAT
- PlanningSmall porches may be permitted development; building warrant rules apply
- Build time2–4 weeks on site
- Postcode districtsPA1, PA4

What we take care of
- Design to suit the house style
- Tiled, slate or flat roof
- Foundations and drainage for rainwater
- Planning check against the porch limits
Proportion matters on a porch more than on any other extension, because it is at the front. We match the roof pitch and brick and keep the front door in proportion with the house windows.
Covering Renfrew
Site visits are available across Renfrew (PA1, PA4). Neighbouring towns we cover include 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.
Planning rules that apply in Renfrew
In Scotland a small porch can be permitted development (Class 1C) within limits on floor area, height and distance from a road; larger porches need planning permission, and building standards still apply, so we check whether a building warrant is needed.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
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.
Building close to a public sewer needs the agreement of Scottish Water, which we check during design.
Applications are decided by your council as planning authority.
How much does a porch extension cost 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.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Small brick or glazed porch, up to 3 m² | £3,900 – £6,400 |
| Standard | Brick porch with tiled roof and composite door | £5,850 – £9,350 |
| Premium | Larger porch with WC or oak frame and premium glazing | £8,800 – £14,700 |
For a figure based on your own dimensions, use our guide-price tool.
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
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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.
Your questions about a porch extension in Renfrew
Do I need building regulations approval in Renfrew?
Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.
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.
How much does a porch cost?
Our guide range is about £3,900 to £14,700 including VAT, depending on size, materials and whether it includes a WC.
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.