We Take Your Architectural Basement Plans And Bring Them To Life
Our expert team of surveyors and builders at Simply Basement will oversee every step of the basement conversion build to create your dream home. Basement conversions can be complex and time-consuming so we make every effort to ensure that your build with us is as smooth and straightforward as possible.
Every Simply Basement conversion in London that we complete is tailor-made to the customer’s specific needs, so all your requirements will be discussed in detail when you meet with our team of surveyors. We work closely with our client’s architects to ensure their vision is turned into a high-quality and fantastic basement conversion.
Our Basement Conversion Services

Build Support
As part of the Simply Construction Group, we can oversee and carry out all areas of your build. We work closely with a group of approved building and basement conversion contractors to deliver our work, all of whom have been carefully vetted by the experts at Simply Basement.
Dig-Out Phase
Our team of experts will take care of all areas of the ‘dig out’ phase of your basement conversion. This includes the removal of all earth and waste, waterproofing and tanking the entire basement space, making it watertight and safe for the fit-out phase to begin.
Fit-Out Phase
At Simply Basement, we take pride in providing comprehensive services to ensure that your basement conversion project is stress-free and seamless. Our team is committed to completing the entire ‘fit out’ process from start to finish. This incorporates all aspects, from plastering the walls and ceilings to fitting staircases, doors, and windows. Our services also extend to plumbing, electrics, and unit fitting ensuring that upon completion of the project, your basement conversion is fully functional and ready for use.
Competitive Fixed Price
The cost of a basement conversion project is influenced by a multitude of factors that need to be taken into consideration. It is essential to have a comprehensive understanding of these factors when determining the financial investment required. On average, you can anticipate spending a minimum of £140,000 (plus VAT) for a standard basement conversion project in the London area. Following a free site survey, we can use your architectural plans to create an accurate and competitive quote to cover all areas of your basement conversion. You can then be sure how much your build will cost and be able to budget accordingly.
Project Management
To ensure you are kept informed throughout all areas of your basement conversion you will have a dedicated project manager or site foreman who will be overseeing your build and making sure everything runs smoothly. They will be your first point of call if you have any questions or concerns. We also have a customer service phone line for all our customers should you need further advice or support. As a Simply Basement customer you will also have access to our unique Simply Dashboard App where you can monitor and track key aspects of your basement conversion.
Party Wall Agreement
If you share a wall with a neighbour then you must have a Party Wall agreement with them before we begin the build. We can support you in ensuring all Party Wall Agreements that need to be completed are done correctly, by referring you to one of our recommended independent party wall surveyors.
Health And Safety
The safety of our customers and team is always at the forefront of our minds when doing any building work. We carry out thorough risk assessments before we start any basement conversion in London and ensure that our team always adhere to our strict safety regulations.
“Anyone will tell you that building work is a nightmare, ours was anything but! We loved our PM and everyone in his team were extremely professional and the quality of their work was exceptional. I am a details person and nothing was too much for them to do and the proof is evident in the completed project.” W Wilson
If you’re thinking of converting your London basement or cellar, call us on 0800 917 7571 today to book your free, no-obligation site survey with one of our friendly advisors.











