Built on Trust,
Delivered with Quality
Expert construction and development services across London — from new builds to extensions, loft conversions, basements, and property maintenance.
Who We Are
At NMSM Construction, we combine skilled craftsmanship with transparent project management to deliver work on time, within budget, and to the highest standards across London.
- Quality Craftsmanship – Attention to detail on every project.
- Trust & Transparency – Clear scope, fair pricing, no surprises.
- Safety First – UK standards compliance and site briefings.
Our Core Services
We provide a full range of construction solutions across London — delivered with trust, transparency, and quality craftsmanship.
New Builds
High-quality homes and commercial properties, built to your exact specifications.
Learn more→Refurbishments
Transform and modernise your property with expert renovations and upgrades.
Learn more→Loft Conversions
Maximise space and add value with functional, stylish loft conversions.
Learn more→House Extensions
Create additional living space that blends seamlessly with your property style.
Learn more→Basements
Convert underused basements into gyms, offices, or family rooms with precision.
Learn more→Maintenance
Reliable property care and emergency call-outs for complete peace of mind.
Learn more→
Project Spotlight: Kingston Home Extension (2025)
Double-storey rear extension with open-plan kitchen-diner and additional bedroom. Completed in 14 weeks, delivered on time and within budget.
- Scope: Foundations, steelwork (RSJs), brickwork, roofing, electrics, plumbing, finishes
- Result: +34% floor area, EPC uplift, seamless indoor–outdoor flow
- Compliance: UK Building Regs, Part P, Gas Safe sign-off
Why Choose NMSM
Our reputation is built on trust, transparency, and consistent delivery. Here’s why clients across London choose us for their projects:
Quality Craftsmanship
Every project, large or small, delivered with precision, care, and attention to detail.
On-Time Delivery
Weekly reporting and clear scheduling ensure deadlines are respected.
Trust & Transparency
Clear pricing, no hidden costs — and open communication at every stage.
Safety First
Compliance with UK health and safety standards, plus full site inductions.
What Clients Say
Our work speaks for itself — here’s what homeowners across London have to say about NMSM Construction:
“NMSM transformed our home with professionalism and attention to detail. The extension looks amazing.”
“Reliable, honest, and completed the job on time. Highly recommended.”
“We were impressed with their workmanship. Everything was done to a very high standard.”
“They handled our HMO conversion smoothly, making the process stress-free and compliant.”
Join the NMSM Team
We’re hiring skilled trades and professionals across London — builders, electricians, plumbers, and project managers.
Our Latest Projects
We’ve delivered successful builds, refurbishments, and renovations across London — from modern extensions to large-scale developments. Each project reflects our commitment to quality, transparency, and safety. Explore our latest work and see how we bring ideas to life.
Latest Insights
Stay up to date with expert advice, property care tips, and construction news from NMSM.
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Request a Free Quote
All enquiries are handled promptly by our office team. Fill in the form and we’ll get back to you within 24 hours.