A Premier London-based construction company specialising in crafting exquisite, design-led spaces

London House Extension Builders:

Luxury home

construction in London

I’m interested in…

Faster. Smoother. Easier

A true turn-key solution

Mammoth Build and Design take care of every detail from start to finish as premier builders in London. When you decide to create your dream space, count on our teams to offer support in all the key areas including architectural plans, interior and exterior designs, estimating build costs, budgeting, planning permissions, project management and construction across London & the home counties. Our service offers true 360 support.

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

Our Key Services

“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…

  • “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

Why choose us

✔️ A dedicated Account Manager to help you through the process

✔️ Keep your project on time & budget

✔️ Qualified and experienced team

☎️ Speak to an expert

Still not sure? Book a free 30-minute phone consultation and see how your project can come to life with Mammoth Design and Build.

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