Basement and Whole House Transformation

Basement and Whole House Transformation

Ever dreamt of having a basement extension added to your property? What would you use your basement extension for? A wine cellar? For a swimming pool? A cinema room? However you use your basement extension, Ashdene Builders are the building firm that can create your basement extension.


The clients wanted to maximise the size of their property by adding a basement extension and then transforming and renovating the rest of the entire property.

Build Duration

24 Months

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Ashdene Builders created exactly what the client asked for. The basement extension gave them another entire floor, increasing the size of the property. A once "normal" looking house from the front, is now a stunning property throughout.
Balham Refurbishment

Tomasz, Pawel and the crew have done a fantastic job with our house renovation in Balham.

They are very solution-driven, nothing gets unresolved! They have a great attention to detail and the level of their work is at a high level of expertise.

Very trustworthy, great communication, I would highly recommend them and will use them again in the future! Thanks so much

Sara B
Peckham Extension

We are delighted to have had such a positive experience with Tomas and Ashdene on the renovation of our flat.

Tomas came highly recommended to us by our architect and did not disappoint. That he was able to deliver a complex project on time despite the challenges of Covid during 2020 is a testament to his professionalism and dedication to client service.

We are very pleased with the quality of the finishing throughout and would not hesitate to recommend Ashdene


We have many 5-Star Reviews on Houzz

Discuss Your Build with Us

We would love to turn your dream into your new home

Let’s discuss your new home!

Unparalleled Craftsmanship
Transparent Communication
Sustainable Construction

020 7207 1556

Greater London
SW16 6AG
United Kingdom