Side return extensions in Forfar: design, approvals and build
Thinking about a side return extension for your Forfar home? Start with a free site visit: we measure up, check what the council will allow and give you honest guide figures on the day.
- Guide price in ForfarFrom £17,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time10–14 weeks on site
- Postcode districtsDD8
Working in Forfar
Site visits are available across Forfar (DD8). We also work in nearby Dundee (13 miles), Arbroath (14 miles), Montrose (20 miles).
For homes towards Perth and Kinross, Blairgowrie is around 17 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.
What is included
- Kitchen-ready shell or full finish
- Survey of the outrigger, boundary wall and drainage
- Glazed, sloping or flat roof with rooflights
- Removal of the side wall and new steelwork
Light is the design problem. A side return can make the middle of the house darker if the roof is solid, so we model the daylight and usually recommend a glazed slope or a run of rooflights along the boundary edge.
What should I budget for a side return extension in Forfar?
For Forfar 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 Forfar: £2,060 to £3,720 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 1.8 m × 4.5 m 8 m² | £17,500 – £21,000 | £18,500 – £24,000 | £23,500 – £30,000 |
| 2 m × 5.5 m 11 m² | £22,500 – £27,000 | £25,500 – £32,500 | £32,000 – £41,000 |
| 2.2 m × 7 m 15 m² | £30,500 – £37,000 | £35,000 – £44,500 | £44,000 – £56,000 |
Try the guide-price tool to see a range for your own size and finish.
Planning rules that apply in Forfar
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.
From first visit to completion
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 produce the drawings and structural design, and manage the approvals so they are in place before work starts.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Side return extension questions answered
Do I need building regulations approval in Forfar?
Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.
How long does a side return extension take to build in Forfar?
On site, typically 10 to 14 weeks once approvals are in place. Before that, allow 6–12 weeks design and approvals.
Do you cover all of Forfar?
Yes. We cover Forfar and the surrounding parts of Angus and Dundee. Site visits are free and there is no obligation.
Will the kitchen be darker?
Not if the roof is designed well. A glazed roof or a line of rooflights along the boundary usually makes the room brighter than before.
How much does a side return extension cost?
Our guide range is about £2,060 to £3,720 per m² including VAT, so a typical 2 m × 5.5 m infill lands around £25,500 to £32,500 at standard spec in Forfar, more in London.
Book a free site visit in Forfar
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.