Discover the world
beneath your feet

If you’re looking for a basement conversion to create a usable or habitable space under your property, whether you currently have space or not, P3 Build London have the perfect solution for you.

P3 Build London are a full service basement conversions company specialising in design, excavation, construction, new build, waterproofing and fit-outs and all other basement conversion requirements.

With a highly experienced Design team around us, a proven and established construction team and a fit-out arm to match we believe we can accommodate any basement build or conversion requirement in or around London.

Offering creative ideas and solutions when embarking on constructing a basement, we work with our recommended architects and team of specialists to create the space that you desire.

Whether it is a larger entertaining space you require, a playroom for all your children’s toys and their friends to play in, an office as you plan to work from home more, maybe an annex for your nanny to have her own facilities or even a sauna/gym to come home and unwind after a hard day’s work in the City.

Featured projects

Bridge Lane

London, SW11

Broxash Road

Wandsworth, SW11

Get in touch

Get in touch

Looking for a basements company in London?

Please contact us for a free consultation.

0800 009 6646

Contact us


  • Mr J Dyson - Wandsworth SW11

    I wouldn't necessarily say that biggest is best when it comes to deciding what basement company to use. Richard and Danny have a huge amount of experience with big companies but set up the company four years ago and have gone from strength to strength through word of mouth and recommendations. From their initial visit, through construction and onto fit out they have been nothing short of fantastic....

    Read More

  • Richard Benson - Devereux Rd

    With the cost of moving so high and stamp duty more and more people are extending their properties rather than moving. We find that many people looking for a basement are growing families that do not really want to leave a certain area due to schools, local amenities, and friends etc. Many of their properties have already been extended to the maximum above ground so a basement is a great option to give them all the space they require without having to move...

    Read More

  • Anonymous - SW11

    I first met Richard Peel and Danny Preater in the summer of 2010, having had glowing referrals from local friends. Within a few weeks of our initial meeting, the digging out stage of my basement was well underway! It was immediately apparent, and has been the case throughout our basement conversion, that they offer a uniquely hands-on and personal approach to each job...

    Read More

  • Adrian and Joanna Floyd - Mallinson Road

    "It is not easy choosing a basement company… you need to place a large degree of trust in their abilities as we all value the structural integrity of our houses!! We would thoroughly recommend Danny and Richard – they make a great team. Danny is exceptional at understanding (and explaining!) the building process and keeps his team firmly on track, to time and budget. Richard ensures the customer experience runs very smoothly...

    Read More

  • Antony Foster - Culmstock Road

    "We chose Danny and Richard’s team based on the price and personal recommendations. The quote was the middle of the 3, and you never really want to go for the cheapest option as there will be loads of hidden extras...

    Read More

  • Viscountess Clanfield - Lessar Avenue

    "We employed Richard and Danny in August 2010 and from the moment they started work until the day they completed they were a delight to deal with...

    Read More