SET SQUARE STUDIO — DESIGN · PLANNING · BUILD · DORSET & THE SOUTH WEST
Drawn true. Planned properly. Built once.
One team for the whole journey — from the first sketch of your extension, loft or new home, through planning permission, to the finished building. No handoffs, no gaps, one point of accountability.
- Based
- Bournemouth
- We cover
- South & South West
- We do
- Design + Planning + Build
- Experience
- 15+ years
Most projects fail in the gaps between people.
The architect draws it, someone else applies for planning, a builder prices something different, and you carry the risk in the middle. We don’t work that way.
Set Square designs your scheme, secures the permissions, and builds it — as one accountable team on one programme. You brief us once. We answer for all of it.
Start with the outcome you’re after.
Whatever stage you’re at — a rough idea, a plot, or a refusal you want overturned.
House Extensions
Single-storey, double, wrap-around, kitchen-diners. More home, done properly.
Loft Conversions
Turn the roof space into a bedroom, suite or studio.
Garden Rooms & Annexes
Home offices, gyms, and self-contained annexes for family.
Barn & Outbuilding Conversions
Bring a redundant building back to life as a home.
Period & Listed Homes
Extend and update a home with history, without losing it. Our specialism.
New Build & Self-Build Homes
A one-off home, a replacement dwelling, or a plot you’re not sure has potential. We’ll tell you honestly.
A Grade II stable block, brought back as a home for care.
We won planning and listed building consent to convert a derelict listed stable into dementia care rooms — navigating heritage officers, a protected bat roost and fire strategy to get it through. Approved by Dorset Council, 2026.
Read the case study- Listed
- Grade II
- LPA
- Dorset Council
- Status
- Approved 2026
- Also
- Ecology + EPS licence
Consultation
We sit down with your goals, your budget and your site, and tell you honestly what’s possible.
Design & Planning
We draw the scheme and manage the whole consent process — including the awkward ones: heritage, listed, change of use, licensing.
Build
We construct it and hand it over. Same team, start to finish.
COMMERCIAL / A SEPARATE STUDIO
Restaurants, bars, holiday lets, care & heritage.
We also work with operators, investors and developers — restaurant and takeaway fit-outs, licensed venues, holiday lets, care homes and listed-building restoration. A different world, same team.
LED BY
Tom Hollington
Lead designer and project manager. Tom runs every project personally — the drawing, the planning strategy, and the build on site. Fifteen-plus years in architectural design, with a pedigree in the licensed trade: Greene King, Mitchells & Butlers, Marston’s, Whitbread and independents. You deal with the person who is accountable, not an account manager.
Tell us what you’re trying to build.
A ten-minute conversation is the fastest way to find out what’s possible on your site.