London Basement Designers

If you live in an older property you may be lucky enough to already have a basement or cellar as part of your home, but chances are you aren’t making the best use of this space yet. It might be filled with clutter, or it may be barely more than a hole in the ground! With the help of qualified London basement builders, basement construction contractors and designers your cellar could soon be converted into a showpiece basement conversion that increases both living space and property value. Some people may be put off by basement conversion in London costs, but it they might not be as much as you think, plus the benefit of your investment will soon be clear. Think double height kitchen-diner, low-lit lounge, basement bar, surround sound home cinema, office manhole or home gym; the possibilities are endless when you start to look at basement conversion. More
Get Quotes on These Services
  • Basement Conversion
  • Damp Proofing
  • Sump Pump Repair
  • Wine Cellar Design
  • Basement Design
  • House Extensions
  • Waterproofing
  • Wine Cellar Installation
  • Basement Waterproofing
  • Sump Pump Installation
Croft Has extensive Basement Knowledge. Croft Structural Engineers is a structural engineering consultancy... Read More
  • 020 8684 4744
  • London SE25 5EH, Greater London
London's One-Stop-Shop Design & Build Firm With 30 Years of Experience
We are a family-run construction company lead by father & son Dick and Fin, both of whom are qualified and...
  • 020 3974 1174
Hatch Construction provides a complete solution, from initial concept right through to final build. Specialising... Read More
  • 020 3797 1242
  • London CM21 9JX, Greater London
At Crownstone Group, we work with residential and commercial clients to survey, plan and construct basements as... Read More
  • 020 8226 5654
  • London E1W 1UN, Greater London
Basement Masters is one of London’s leading Basement specialist’s. We have been established since 2004 and have... Read More
  • 020 8443 7099
  • Enfield en13pn, Greater London
10 REASONS WHY YOU SHOULD USE NU:PROJECTS 1) Empathy is at the core of nu:projects. We listen , care and... Read More
  • 020 7731 6841
  • London SW63LQ, Greater London
Central to our approach is our philosophy which ensures that we fully understand the expectations and aspirations... Read More
  • 020 7148 1595
  • London TW8 0PP, Greater London
OBS Basements have been trading in London for over 10 years. primarily a building company, we moved into basement... Read More
  • 020 3974 1980
  • London EC2A 4NE, Greater London
London Basement are the market leaders in basement conversion and basement construction, having been at the... Read More
  • 020 8847 9449
  • London TW7 6DB, Greater London
Main Contractor - Breaking ground to hand over Specialisms - Architectural Concrete / Basement / Groundworks / RC... Read More
  • 07917 768278
  • London SW16 5HR, Greater London
Premier Basements construct and excavate basements in residential properties in and around London. Based in... Read More
  • 0333 444 0148
  • Staines TW18 3JY, Surrey
BasementWorks offers a comprehensive range of services for architects, interior designers and other specialists... Read More
  • 020 3384 9740
  • London SW18 1SL, Greater London
  • 07788 800088
  • London W3 7QS, Greater London
Basement Contractors Full refurbishment Read More
  • 01932 227705
  • Shepperton TW17 8AU, Surrey
The Advantage Basement and Cellar Company was formed in 2000. Both directors have 30 years building experience,... Read More
  • 020 8871 3055
  • London SW18 2QD, Greater London
Basement Masters is one of London’s leading Basement specialist’s. We have been established since 2004 and have... Read More
  • 020 8443 7099
  • Enfield EN1 3PN, Greater London
Featured Reviews for Basement Designers in London
Croft Structural Engineers
Basement Designers in London
"Over the past 5 years George James Associates have worked with Croft on numerous high end residential developments in London including schemes for both sub and super-structure. Notwithstanding their extremely competitive pricing structure and vast knowledge of engineering technology, their committed and flexible approach to a design makes them a pleasure to work with."
- James Nuckey
Crownstone Construction
Basement Designers in London
"Crownstone Construction offer the full package. Qualified and experienced managers backed up by highly efficient support staff. They delivery a fully managed and integrated service and no job is too big or small for them. Simon, David, Manisha and the team are friendly, reliable and great to work with. I highly recommend them!"
- Chris Reynolds
Nu Projects Of Fulham - Basement Specialists
Basement Designers in London
"nu:projects is a great place to work! The environment is incredibly friendly and whenever help is needed, I can always ask. Really enjoy working at nu:projects, learning something new everyday and expanding my skills and experience in the residential construction field"
- HU-440176142
OBS BASEMENTS LTD
Basement Designers in London
"I have worked with Lewis and the team at OBS for the past 18 months - 2 years supplying Concrete and concrete pumps. OBS are a very organised company who's site are immaculate, making supply of concrete simple.(a rarity in our game) If you are looking for an business who take pride and passion in there standards then look no further. Dan Carter EasyMix Concrete UK LTD www.easymixconcrete.com"
- Dan Carter
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What can a London basement designer or specialist basement construction contractor do for me?


Your London basement designer will help to assess if a basement excavation or construction is feasible – both structurally and financially – as well as advising you on the cost of underpinning if required, ease of access and escape, basement waterproofing or tanking, damp proofing, safe heating options, the drainage system, your insulation requirements, electrical connections, and the most appropriate basement lighting options, as well as interior decoration. Basement builders and designers will also be able to tell you if the Party Wall Act applies and whether planning permission is required for basement conversion in London: if you live in a conservation area, you intend to carry out a basement excavation or create a new separate unit of accommodation, or you alter the external appearance of your home by adding a light well, then it is likely you will require planning authority sign off.

What is involved in a basement conversion project?


Start by getting a your London basement builders or designers to assess the feasibility of a conversion or basement construction. Basement conversion, and basement excavation, is a highly specialised job and engaging specialist basement builders will ensure the job is completed safely with the least disruption to your neighbours and family. Always ask for an estimate on the basement conversion cost before beginning to make sure it’s feasible for you. You’ll also need to ensure before a project commences that you have all the required permissions and consents. If your basement construction requires the lowering of an existing basement floor to create more headroom, or building a brand new basement, then your basement designer’s first step will be to underpin the foundations for additional structural support. The basement will then need waterproofing by lining it with a studded membrane, then building a secondary wall inside the lining. A well-designed basement will blend seamlessly with the rest of your home but can also use clever tricks like creating an internal balcony or mezzanine level to help connect the spaces together. Creating sufficient light for your basement is a crucial concern and so many basement conversions in London will now be completed with additional excavations of surrounding land to create light wells or even a sunken terrace around the basement.

Important questions for your London basement builders or cellar conversion specialists


  • How long have you been working in basement design?
  • How will the consultations run? What is your basement design process?
  • Do you offer basement conversions or basement excavation and construction?
  • Do you handle the building survey and structural engineer’s report? Are those costs included in your quote?
  • Can you give me a written estimate of the total basement conversion cost?
  • Is a deposit necessary and what payment scheme do you suggest?
  • Who is responsible for submitting planning application and seeking building regulations approval?
  • Will I be able to see CAD drawings/designs or sketches?
  • Will you be able to help with recommending builders and contractors and outlining cost-saving measures?
  • Will you provide support, either on the phone or in person, while work takes place?

Find basement builders and designers on Houzz. Get started now by searching for London basement excavation and construction specialists in the Find a Pro section of Houzz. Add your favourite basement images and basement conversions in London to your Ideabook and then contact the relevant designer or contractor who worked on them.
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