London's multi-trade
building specialists.
GMAS Group Ltd is a London-based construction and energy company specialising in electrical safety, gas compliance, building works and energy efficiency across all 32 boroughs.
London's project-managed
refurbishment & building contractor.
GMAS Group Ltd is based across London, in the heart of the West London boroughs we serve most. Our team of qualified electricians, gas engineers, plumbers, builders and project managers works across all 32 London boroughs and the City.
We operate across two main areas of work: compliance and certification (EICR, gas safety, EPC and fire alarms for landlords and businesses) and construction and installation (boiler installations, extensions, loft conversions, bathroom and kitchen renovations, CCTV and smart home).
All our engineers carry full ID and all work is certified, documented and carried out to current British Standards. Every job is coordinated by us and carried out by a trusted team of accredited trades.
How we
operate.
We provide a written price before any work starts. No surprises on the invoice.
Every trade is carried out by accredited engineers we know and manage.
All compliance certificates issued digitally the same day as the inspection.
We aim to respond to all enquiries within one hour during business hours.
Get in
touch.
To book a service, request a quote or ask a question, call or email us directly. We respond to all enquiries within the hour during business hours.
London-wide
GMAS Group Limited, company number 17072376, registered in England & Wales
All 32 London boroughs and the City of London
A clear path from
first call to final handover.
We visit, listen and understand the scope, budget and timeline.
A clear specification and a transparent, itemised quote, no surprises.
One point of contact coordinates every trade, on schedule.
Snagged, certified, and finished to a standard we put our name to.
Built on trust.
Backed by results.
Every job delivered by a trusted team of accredited trades and managed by us end to end. One point of contact, no surprises mid-project, no finger-pointing, all the way through.
One project manager. One number to call. Every trade coordinated by us, not by you.
Itemised written specification. No day rates, no creeping scope, no surprise invoices.
Accredited electricians, gas engineers, plumbers and builders we know and work with. Insured, accountable, coordinated by us.
Finished to a standard we would put our name to. Snagged, certified, handed over clean.