Basement Conversion specialist and builders in Chelsea SW7

Basement conversion specialists and basement conversion in Chelsea London

Call Us 0207 223 6417

APT Renovation – Design & Build can take care of all aspects of basement conversion works  in Chelsea and surroundings throughout whole planning stages and design process, excavation to construction of the core base and waterproofing finalizing with fit-out and completion.

APT Renovation offer a complete specialist basement conversion and renovation service.

Our construction team will undertake the whole fit-out phase of your project. The major benefit of our service that you can work with a single team of specialists under one roof.

Basement planning and construction experts

Basement design consultants, Basement structural architects, Structural engineers and builders who have over 10 years of experience as a team in modelling, designing and building beautiful homes across Chelsea.

We can also take care of all aspects including planning applications, project cost estimation, development of detailed designs, and specification of fine materials and finishes.

Our Design & Build process:


APT Renovation project manager will visit you at your property in Chelsea London for the initial consultation to discuss your vision about your basement conversion, where we will be delighted to discuss with you what is your ideas and what you would like to create within your basement space.

We can offer a full service which includes submitting your basement project plans to plan and permission application right through to the very last point, or we will be more than happy to just create your basement conversion according to pre-designed projects from your already approved plans.

Our state of art project planning and customer satisfaction factors will endeavor to send you a quotation within 4 days.  If after our initial visit at your property in Richmond London you have any further questions to discuss our office team and project managers are will be more than happy to help.


If Planning and Design are required for your property in Richmond London our Architect is ready to give a hand on to help you realize your vision and personal ideas and go through with every detail you may consider until you are completely happy with yours or our architects’ ideas.  Our main aim to make our clients happy and deliver results which stand out.  Every process phase and details will be explained to you from how long planning process should take all the way through step by step building and completion.


We look at Health and Safety very seriously and it is first and foremost attention on every site.  Our construction team are fully trained and adhere to all Health and Safety procedures and issues.


APT Renovation has over 15 years of extensive building experience and as well as Project Manager, Construction Manager and the office staff is always on hand to answer your’s vital questions and give you personal advice.  Before your project will start you will be introduced to your personal Project Manager who will be onsite all throughout the day, every day and who will be your first point of contact. APT Renovation provides basement renovation services as well as basement conversion and basement extension in Richmond London.


APT Renovation has used Delta Membrane Systems and Pumps for efficient waterproofing and damp proofing for a considerate number of years.


After successful excavation, our team is ready to create your rooms or space at your property in Richmond to realize your vision working towards making it come to life.  Our dedicated and experienced construction team will work efficiently and passionately to complete your project on basement conversion or basement extension on time with outstanding detail finish.

Our promise for our Clients to be completely 100% happy and content with your project results.


APT Renovation is fully insured and offer a 15-year warranty on any structural work.


Our Building Inspector will visit building site frequently at regular stages throughout the project, their job is to ensure that construction team is adhering to all the latest building regulations and standards. Upon completion of a project, the Building Inspector will make a final visit and you will be issued with a complimentary completion certificate.