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, fire alarm and PAT testing 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. We do not use subcontractors — every job is carried out by our own qualified team.
How we
operate.
We provide a written price before any work starts. No surprises on the invoice.
Every trade is carried out by our own qualified engineers. We never subcontract.
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.