Expert Builders in North West London – Quality Construction & Renovation Services

Your Trusted North West London Builders for Home Improvements

Are you looking for skilled and reliable builders in North West London to enhance your home? At Mammoth Design & Build, we provide professional house extensions, loft conversions, full renovations, kitchen and bathroom refurbishments, roofing services, and new builds. Our experienced team delivers high-quality craftsmanship tailored to your needs, ensuring every project is completed on time and within budget.

Our Building Services in North West London

House Extensions & Loft Conversions

Expand your home with beautifully designed extensions and loft conversions, adding space and value.

  • House Renovations & Refurbishments

    We modernise properties with full or partial renovations, improving functionality and style.

  • Kitchen & Bathroom Renovations

    Upgrade your home with a stylish and practical new kitchen or bathroom, custom-designed to fit your needs.

  • Roofing Services

    We provide roof repairs, new roof installations, and regular maintenance to keep your home secure.

  • New Build Homes

  • From initial design to final construction, we manage your new build project with precision and expertise.

  • Areas We Cover in North West London

    We serve Harrow, Brent, Barnet, Camden, Wembley, Kilburn, Hampstead, and surrounding areas.

To see how our solutions could work for you, contact us today for an initial consultation.

Our Key Services in North West London

“Fully managed projects from design planning to construction”

Our team has over 100 years

of collective experience in:

We’ve built our business on recommendations

from loyal clients in North West London…

  • “Mammoth builders have been amazing from start till completion"”

    Michael – WC1N

    Job: Rear extension

  • “Our experience with Mammoth design and build team was amazing. Delighted with the finished result.”

    Ahmed – SW7

    Job: Loft conversion

  • “Fantastic customer services, great attention to detail and professional - start to finish"”

    James - NW10

    Job: Garden garage conversion

  • “Thanks so much Mammoth team for a such a lovely finish. You turned our home into a heaven"”

    Jenny - RM7

    Job: Complete renovation

FAQs for Builders in North West London

  • Many extensions fall under permitted development, but we can help with planning applications if required.

  • Costs vary depending on size and specifications. We offer free consultations and detailed quotes.

  • Yes! We provide high-quality kitchen and bathroom renovations tailored to your style and budget.

  • Absolutely! We offer roof repairs, replacements, and maintenance services.

  • Most extensions take between 3 to 6 months, depending on the complexity of the project.

Why choose us

✅ Experienced & Certified Team – Our builders, architects, and tradespeople have years of expertise in construction and renovation.
✅ Complete Building Solutions – From planning and design to construction and finishing, we handle everything.
✅ High-Quality Materials – We use premium materials to ensure durability, aesthetics, and long-lasting results.
✅ Transparent Pricing & Timely Completion – No hidden costs, just clear quotes and reliable project timelines.
✅ Fully Licensed & Insured – We comply with all UK building regulations and safety standards.

Our Building Services in North West London

☎️ Get a Free Quote Today

Thinking about a home extension, renovation, or new build in North West London? Contact Mammoth Design & Build for expert advice and a free quote.

E: hello@mammoth-builds.co.uk
M: 07878 719 909