Extension plans and drawings in Renfrew
For Renfrew homeowners we handle extension plans and drawings, with fees agreed in writing before any work starts.
- Guide price in RenfrewFrom £1,150 inc VAT
- PlanningWe find the right route for you
- Timescale2–6 weeks for drawings
- Postcode districtsPA1, PA4
Included in a typical project
- Two or three layout options to compare
- Structural calculations from an engineer (full pack)
- Measured survey of the house and garden
- Planning drawings: existing and proposed plans and elevations, site and location plans
- Building regulations drawings and specification
What it costs in Renfrew
Fees below are our Renfrew guide (×0.98, the Scotland factor), including VAT. Council and building control fees are extra.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Measured survey and planning drawings | £1,150 – £2,200 |
| Standard | Planning drawings plus building regulations drawings | £2,150 – £3,750 |
| Premium | Full pack with structural calculations and 3D visuals | £3,300 – £5,400 |
For a figure based on your own dimensions, use our guide-price tool.
Planning rules that apply in Renfrew
In Scotland the questions are whether the extension falls within householder permitted development (Classes 1A to 1D) or needs planning permission from the council, and the building warrant, which is required before construction begins and is followed by a completion certificate.
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.
Local to Renfrew
Our survey diary covers Renfrew, including PA1, PA4. The same team covers Erskine (3 miles), Paisley (3 miles), Barrhead (5 miles), Johnstone (6 miles), all within easy reach.
Clydebank, in Dunbartonshire, is roughly 2 miles from Renfrew 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.
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
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions answered
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.
How long does this take for a Renfrew home?
2–6 weeks for drawings, depending on the council and the complexity of the project.
Who do I contract with in Renfrew?
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.
How much do extension plans cost?
Our design packs range from about £1,150 to £5,400 including VAT, from planning drawings only to a full pack with building regulations drawings, structural calculations and 3D views. Council fees are separate.
Can I use your drawings with another builder?
Yes. Once paid for, the drawings are yours to use for your project.
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.