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.
- Listed
- Grade II
- LPA
- Dorset Council
- Status
- Approved 2026
- Also
- Ecology + EPS licence
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 studyConsultation
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.