TCM Building — house extension under construction in London

Building Excellence.
Trusted Results.

Over 15 years delivering extensions, conversions, refurbishments, and commercial fit-outs across London and Hertfordshire. Checkatrade verified. IPAF certified.

Checkatrade Verified
IPAF Certified
15+ Years Experience
15+
Years of Experience
500+
Projects Completed
5★
Checkatrade Rating
24/7
Emergency Response
The TCM Building team on site in London
500+
Projects Completed
Across London & Hertfordshire

15 Years of Building
Trust & Quality

TCM Building & Maintenance was founded on a simple principle: deliver the quality of work you'd want done on your own home. Based in Ilford, we serve homeowners and businesses across London and Hertfordshire with a full range of building and maintenance services.

Our team includes qualified architects, structural engineers, and specialist tradespeople — all under one roof. We manage your project from initial design through to final handover, so you never have to coordinate multiple contractors.

Checkatrade verified with a 5-star rating
IPAF certified for safe working at height
Fully insured with public liability cover
Free, detailed quotations with no obligation
All work guaranteed with aftercare support
Why Choose TCM

Loft Conversions That
Transform Your Home

A loft conversion is one of the most cost-effective ways to add space and value to your home — typically adding 20–25% to your property's value without losing garden space.

Dormer Conversions
Most popular — maximum headroom
Mansard Conversions
Ideal for terraced houses
Hip-to-Gable
Perfect for semi-detached
Velux Conversions
Budget-friendly option
Explore Loft Conversions
Beautiful loft conversion interior with Velux skylights
Modern commercial office fit-out by TCM Building

Commercial Fit-Outs &
Office Refurbishments

We understand that business downtime costs money. Our commercial team works around your schedule — including out-of-hours and weekend working — to deliver fit-outs and refurbishments that minimise disruption to your operations.

Retail Fit-Outs
Office Refurbishments
Suspended Ceilings
Partition Walls
Commercial Maintenance
Project Management
Commercial Services

What Our Clients Say

5.0 on Checkatrade · 100+ reviews

"TCM transformed our Victorian terrace with a stunning rear extension. The team was professional, tidy, and finished ahead of schedule. Absolutely delighted with the result."

Sarah M.
Ilford, London
Rear Extension

"We had a full loft conversion done and couldn't be happier. From planning to completion, TCM managed everything seamlessly. The quality of workmanship is exceptional."

James T.
Borehamwood, Herts
Loft Conversion

"After a kitchen fire, TCM responded within hours and managed the entire restoration. They liaised with our insurers and returned our home to a better state than before."

Priya K.
North London
Fire Damage Renovation

24/7 Emergency Property Services

Burst pipes, structural damage, fire or flood — our emergency team is available around the clock to secure and restore your property.

Ready to Transform
Your Property?

Get a free, no-obligation quote from our expert team. We'll visit your property, listen to your vision, and provide a detailed, transparent estimate.