LOCAL BUILDERS · SOUTHALL
Top-Rated Builders in Southall
Looking for reliable builders in Southall? GSM Builders provides high-quality construction services personalised for residential and commercial properties.
From roofing and loft conversions to complete renovations, our experienced team ensures each project is delivered with precision, professionalism, and care.
With in-depth knowledge of Southall’s building regulations and property styles, we guarantee compliance while turning your ideas into reality, on time and within budget.
12-month workmanship warranty
Written into every contract
Building Control certified
Completion certificate on every project
Fully insured
Public & employer’s liability
Based in Hayes UB3
Building in West London since 2019
WHAT WE DO IN SOUTHALL
Building services in Southall
Extensions, lofts and full refurbishments are most of our work. We also take on smaller jobs on their own.
House Extensions Loft Conversions Refurbishment Renovation Kitchen Fitting Flooring Painting & Decorating Plastering & Skimming Roofing Wall Tiling Wallpaper Removal Emergency Services All services →
Let’s Build Something Extraordinary
Let’s build something extraordinary together with trusted builders in Southall.
Our skilled team brings creativity precision and dedication to every project. Whether it is a renovation extension or new build we work closely with you to deliver exceptional results that reflect your vision and exceed expectations.
Hire Our Reliable Builders in Southall
When it comes to building or renovating in Southall, you need a team you can trust. At GSM Builders, we pride ourselves on being dependable, approachable, and highly skilled in all aspects of construction. From the first consultation to the final finishing touches, we work with precision and care to deliver results that match your vision.
Whether it’s expanding your home or transforming a commercial space, our builders are ready to handle projects of any scale, on time, on budget, and with complete transparency.
Why Choose GSM Builders?
✅ Experienced Team
Our builders bring years of hands-on experience in residential and commercial construction across Southall and surrounding areas.
✅ Fully Customised Solutions
Every project is tailored to your specific requirements, from layout and materials to timeline and budget.
✅ Compliance & Quality
We follow all local building regulations and use high-quality materials to ensure durable, compliant, and long-lasting results.
✅ Transparent Communication
From the initial consultation to project completion, we keep you informed every step of the way.
Get free Quote from the best Builders in Southall.
Get a written quote
Tell us about your project in Southall and we’ll come out, measure up and send an itemised price. Usually within a week.
GSM Builders Ltd
13 Leven Way, Hayes UB3 2SR
Mon to Sat 8am, 6pm
HOW WE WORK
One team, start to certificate
01
Free site survey
We measure, check drains and planning, and give you an itemised written quote.
02
Drawings & approvals
Plans, structural calculations, planning or prior approval, Party Wall notices where needed.
03
The build
A dedicated site manager, agreed payment stages, and the house kept liveable.
04
Sign-off
Building Control completion certificate, snagging, 12-month workmanship warranty.
FAQ
Common questions
What types of construction projects do you handle?
As the top builders in Southall we specialise in a wide range of projects, including home extensions, loft conversions, renovations, and new builds for both residential and commercial clients.
Do you manage planning permissions and building regulations?
Yes, we handle all necessary applications and ensure your project complies with Southall’s local planning and building regulations.
How long does a typical home extension take?
The timeline varies based on the project size and complexity, but most standard extensions are completed within 8 to 12 weeks. We’ll provide a detailed schedule during the planning phase.
Is your work insured and guaranteed?
Absolutely. All our work is fully insured, and we offer a workmanship guarantee to give you complete peace of mind.
NEARBY
Also building in these areas
Hayes Hillingdon Uxbridge Ruislip Greenford Ealing Acton Hounslow Harrow West Drayton Harmondsworth Sipson Iver Colnbrook All areas →
Ready to talk about your project in Southall?
Free site visits anywhere in West London. Written quotes within a week.