— from concept to completion —
Extensions, loft conversions, refurbishments, new builds, kitchens, bathrooms and more — delivered to an exceptional standard across Surrey. On time. On budget.
If you already have architectural drawings and planning permission, our bespoke build service takes over from there — managing every trade, on time and on budget.
Get a build quote →From first idea to final handover — we'll manage design, planning applications, building regulations and the full build. One team, zero stress.
Start with a free consultation →
JMG Construction is a family-run Surrey-based building company specialising in high-quality residential construction and renovation. Every home is unique — so we never apply a one-size-fits-all approach. We take time at the start of every project to understand exactly what you want, then deliver it with precision, honesty and care.
Our reputation is built entirely on referrals. That means your satisfaction is everything to us.
From a single bathroom to a complete new build — we cover every trade in-house, so your project runs smoothly under one roof.
Turnkey construction of bespoke residential properties. We manage everything from groundworks to final snagging and handover.
Single and double-storey extensions that add real space and value. We handle planning support, foundations, build and finish.
Transform unused space into beautiful, functional rooms. Dormer, hip-to-gable, Velux and full garage conversions completed to perfection.
Full property refurbishments and whole-house renovations. Every trade covered — rewires, replastering, new layouts and high-quality finishes throughout.
Full design and installation of kitchens and bathrooms. Supply and fit, or fit-only — all trades in-house including plumbing, tiling and electrics.
Gas Safe registered plumbing and heating. Boiler installations, system upgrades, underfloor heating and full central heating installations.
NICEIC-certified electrical works throughout. Full rewires, consumer unit upgrades, EV chargers, smart lighting and commercial installations.
Skilled plastering and rendering inside and out. Full room skims, patching, K Rend, external render and insulated render systems.
Professional interior and exterior painting and decorating. Clean, precise finishes delivered with minimal disruption to your home or business.
We believe there's no one-size-fits-all. Some clients want a complete managed service from planning to paint. Others just need specific trades. Either way — we adapt to you.
Every quote is bespoke to your brief. No padded day-rates. No hidden costs. Full clarity on where your budget is being spent, from day one.
We run everything — design, planning, trades, timeline. You relax.
Have your own plans? We pick up from there and deliver the build.
We'll prepare drawings and manage your planning application for you.
Just need plastering, electrics or plumbing? Book individual services.
Simple, transparent steps from first conversation to completed project.
We discuss your ideas, goals and budget. No pressure, no cost.
On-site assessment and a detailed, transparent itemised quote.
We handle drawings, planning applications and building regs as needed.
Our skilled in-house team delivers — on time and on budget.
Final snagging, full clean-up and formal project completion.
From loft conversions and full refurbishments to extensions and kitchens — browse our project portfolio with full before & after photos.
View Full Portfolio →Professional from start to finish. Excellent workmanship and communication throughout. The extension looks fantastic — couldn't be happier with the result.
JMG did our loft conversion and we've already recommended them to three neighbours. Brilliant team, incredibly clean site, delivered exactly on time.
The refurbishment made it feel like a brand new house without the expensive cost of moving. The attention to detail and quality of finish was outstanding throughout.
Across Surrey. Not sure if we reach you? Just call us.
Free quotations for all project types. We cover Surrey.