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Simply uncover a whole new world with London’s leading basement conversion company
Welcome to Simply Basement, specialists in ground-breaking London basement conversions. As a basement conversion specialist we offer you a complete design and build package and you can discover more about our work right here.
Why choose Simply Basement for your London Basement Conversion?

Over 15 Years Experience

…we have completed many fantastic builds in and around London

Specialist modifications

…like skylights, sun pipes, and light wells

Fixed prices

…minimum disruption, maximum satisfaction

Full project management

…from a dedicated site foreman

10 Year Warranty

…so you can be certain of our quality

Take a look at our recent work

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Pembridge Mews Basement Conversion

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Pembridge Mews Basement Conversion

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Pembridge Mews Basement Conversion

I cannot rate Simply Basement highly enough. I’ve worked with various Basement companies in the past, for clients and my own properties and Simply have been the best by miles. They were fast, efficient, very reasonably priced and their quality of work was excellent. Their attitude to variations was very fair, which is quite unique with any building company.

I’d strongly recommend that you ask them to quote and if they’re competitive, use them!


Simon F

Basement Conversion - Notting Hill

Welcome to Simply Basement, specialists in ground-breaking London basement conversions.

As a basement conversion specialist, we offer you a complete design and build package and you can discover more about our work right here.

We specialise in 100% bespoke basement conversion projects; from drawing up your plans and applying for planning permission, through to bringing them to life with our basement construction teams. 

From cinemas, gyms or bowling alleys to spas, play rooms or swimming pools, all types of basement conversions allow Londoners to transform a house into a dream home; even if Basement Conversions and House Price Values
their dream is simply more space for the family.

Call us today on 0800 917 7571, or fill out an online enquiry form. The next step is for our friendly Simply Basement to call, take details of your proposed project and arrange a free, no obligation site survey of your home.

Our Services

Dig Out Phase: We cover all areas of the ‘dig out’ including waste removal, waterproofing and tanking.

Fit Out Phase: We complete the ‘fit out’ phase which includes all the plastering, plumbing, electrics and unit fitting.

Build Support: As part of the Simply Construction Group we oversee and carry out all areas of your build.

Competitive Fixed Price: So you know exactly how much your basement conversion will cost.

Project Management: Your dedicated project manager will oversee your build and ensure everything runs smoothly.

Party Wall Agreement: We will take over any Party Wall Agreements that need to be completed

Health And Safety: We carry out thorough risk assessments and adhere to all relevant safety regulations.


Basement Construction Costs London

Experience a hassle-free basement construction process with our complete package tailored to meet all your needs. Our expert team will conduct a FREE thorough site survey and provide you with a detailed and precise quote that covers every aspect of your build. Trust us to take care of every step of your basement construction project.

The quote will cover all aspects of the build including the costs of:

• Digging
• Waste Removal
• Underpinning
• Waterproofing and Tanking
• Subfloor Choice
• Materials and Labour Costs
• Internal Fit Out and Finishing

Average basement costs start from £140,000 Plus VAT

Find out more about the cost of a basement conversion in London HERE


The Simply Difference 

Simply Basement, a division of the Simply Construction Group, brings extensive experience and expertise from the residential construction industry. As a well-established family-run construction firm, Simply Construction Group has been operating in London and the West Midlands for over twelve years, successfully delivering hundreds of projects annually. As well as specialising in basement conversions the group are also experts in building loft conversions and home extensions, among other home improvement projects.

London Housing Market and Basement Conversions

Of course, many families want nothing more than quality space for growing families. Others need extra room for a home office or even an annex for their children’s nanny. The London housing market makes it difficult, or impossible, for families to upsize. Fortunately, it can be more cost effective to expand beneath your current property with a basement excavation. Basement conversions can also be carried out on homes that do not have an existing basement or cellar.

Basement conversions in London are ideal for children. They can be used to create indestructible playrooms where children can play safely with friends, without putting themselves or your valuables at risk.

Basement Conversions and House Price Values

Another reason that basement conversions make such great financial sense is that the work could add substantial value to your home. If you’re thinking of selling up and taking advantage of the London house price boom, you could gain even more with a glamorous signature basement.

Underground rooms can add between 10 and 15% to the value of a home, while basement conversions in the centre of London can add as much as 20% to the price tag.

For more information call us on 0800 917 7571, or fill out an online enquiry form.

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