Premium bathroom design, supply and installation across Edinburgh & the Lothians. Free site survey, free 3D rendered design, and every trade in‑house — coordinated by Stewart & Alex from start to finish.
Stewart Knox and Alex Chapman first met as bathroom fitters in 2002 and founded GSA Bathrooms together in 2010 — pairing 23 years of combined expertise with a refusal to cut corners. Today they're recognised as one of Edinburgh's most trusted bathroom specialists, winners of the Prestige Awards' Bathroom Specialist of the Year 2020.
From listed Edinburgh tenements with walls that need squaring and floors that need new joists, to serviced apartments for The Knights Residence by Mansley, GSA handles every stage in‑house — design, electrical, joinery, plastering, tiling, flooring and clear‑up. One number, one team, one finish.
Anything is possible.
— Stewart's MottoA clear, project‑managed journey with daily client liaison. Free site survey, free 3D rendering, and every trade coordinated in‑house.
A free, no‑obligation visit. We assess your space, talk through ideas, and answer every question — patiently.
After the survey, we produce a free 3D rendered design so you can see your new bathroom before a single tile is lifted.
Fully itemised specification. We can supply everything or fit your own items — installation‑only welcome.
Electrical, joinery, plastering, tiling, flooring and rubbish removal — managed start to finish by Stewart & Alex.
From traditional Georgian tenements to contemporary new‑builds — every project tailored to the home and the client.
After every site survey we produce a free, fully rendered 3D visual so you can walk through the design, refine the layout, and choose finishes with confidence — long before the first tile is cut.
Every fixture, finish and tile rendered to scale so there are no surprises on install day.
We’ll move basins, rotate vanities and swap finishes until it’s right — no charge, no rush.
We’ll specify and source everything, or install what you've already bought — your choice.
Beyond domestic renovations, GSA is the go‑to bathroom contractor for commercial clients across Edinburgh — including The Knights Residence by Mansley, where Stewart and Alex have renovated multiple serviced apartments. Multi‑unit experience, minimal disruption, and the same impeccable finish every time.
From Hamilton Folly Mews to Baileyfield — clients across the city return to Stewart & Alex because the work, and the experience, holds up.
Stewart and his team done a great job with excellent attention to detail… completed in only 7 days end to end and how tidy the house was when we came back. One of the most reliable companies I've had opportunity to deal with.
After several years of putting up with two botched bathrooms, we finally bit the bullet and decided to redo both at the same time. Both rooms were finished within 2 weeks and on budget. Quality of work and finish is excellent.
Professional and friendly, they have a great eye for detail and really take pride in their work. They explained each stage and answered all our questions patiently. We have a beautiful wetroom now that we love. Stewart's motto 'anything is possible' helped us achieve that.
Stewart and Alex's workmanship is exceptional, but as well as this their patience, good humour and obvious enthusiasm for their craft made it a pleasure to have them in our home. Who knew that choosing just the right size of tile can make your room look so much bigger!
It wasn't an easy job, in an Edinburgh tenement with walls that needed squared, a floor that needed straightening with new joists, removal of a water tank and joinery to change the door opening. Alex mapped out the plumbing and made a template for the stone top to be cut. Nothing was too much trouble.
Stewart and Alex are the complete professional tradesmen, which we trust to renovate our self‑serviced apartments in Edinburgh. Both are friendly, tidy and reliable and their workmanship is impeccable.
Tell us about your bathroom — Stewart or Alex will pop round, take a look, and walk you through the options. No obligation, no pressure, no charge.
Edinburgh & the Lothians
Mon–Fri 8am–5pm · Sat by arrangement