London's Trusted Multi-Trade
Property Services Partner
Gas Safe registered engineers, CHAS accredited, and backed by £5 million in public liability cover. We protect London properties — and the people who depend on them.
15+
Years of Experience
5,000+
Jobs Completed
£5M
Public Liability Cover
60 min
Average Response Time
100%
Gas Safe Compliant
Our Story
Built on Expertise, Driven by Outcomes
MAMOSS is a medium-sized company specialising in residential and commercial plumbing, gas, and electrical services across London. We focus on plumbing, electrical, and gas installation and maintenance; trace and access; leak detection; drainage works; annual plumbing checks; boiler and cylinder services; HIU servicing; landlord gas safety inspections, and much more.
Our commercial and residential professionals are here to help you in all aspects of your mechanical and electrical needs. Whether you manage a portfolio of rental properties, run a commercial premises, or simply need a reliable plumber for your home — we deliver consistent, regulation-compliant results.
Our engineers are highly skilled, registered professionals delivering outstanding quality services on all plumbing, gas, and electrical works in accordance with national standards and relevant building regulations. We also utilise several trusted and qualified sub-contractors to cover trades such as decorating, flooring, tiling, and roofing works.
Although we specialise in plumbing and heating, MAMOSS also covers most construction industry trades. The types of work we handle include domestic refurbishments (bathrooms, kitchens, and redecorations), proactive and reactive maintenance, insurance claim remedial and rectification works.
Our clients include property management companies and letting agents, private schools and colleges, main building contractors, domestic clients and landlords — many of whom we have served for years. That retention rate speaks to the reliability and standards we bring to every job.
Our Standards
Certified, Insured, and Accountable
Every job we complete meets or exceeds the standards set by national regulatory bodies. Our Gas Safe registration means every gas appliance we touch is legally compliant and safe. Our CHAS accreditation demonstrates that our health and safety management systems are independently verified.
We hold public liability insurance to the value of £5,000,000 — giving our clients complete peace of mind when we work on their properties. Every engineer carries identification and proof of qualification on every visit.
Our service philosophy is straightforward: arrive on time, diagnose accurately, execute to standard, and leave the property clean. No shortcuts. No excuses. No hidden charges.
Accreditations & Memberships
- Gas Safe Registered (all gas engineers carry valid Gas Safe ID cards)
- CHAS Accredited (Contractors Health and Safety Assessment Scheme)
- Safe Contractor approved
- Constructionline certified
- Chartered Institute of Plumbing and Heating Engineers (CIPHE) member
Who We Serve
From Single Homes to Property Portfolios
We work with a diverse range of clients, each with different needs but one common requirement: dependable, certified tradespeople who get the job done right. Our client base includes:
Property Management Companies
Reactive and planned maintenance across portfolios, with priority response agreements available.
Letting Agents & Landlords
Annual gas safety certificates (CP12), boiler servicing, and tenant-ready preparation works.
Private Schools & Colleges
Scheduled maintenance contracts and emergency call-out support for institutional facilities.
Homeowners & Domestic Clients
Boiler installations, bathroom refurbishments, emergency repairs, and everything in between.
Serving All of London
Based in Bethnal Green, we provide rapid-response coverage across East, West, South, and South West London.
Ready to Work With a Team You Can Trust?
Speak to a qualified engineer today. No obligation, transparent pricing, rapid response.