Sizebreed Construction have vast experience in designing and building some of the largest and most complex private basement extensions in London, adding huge amounts of high quality living space to existing homes. Our basements typically include swimming pools, gyms, cinemas, wine cellars, games rooms, laundry and storage facilities, as well as the odd bowling alley and nightclub!

Our in-house engineers design our basements using the highest safety standards, ensuring that our clients and their property – as well as our neighbours and workers – are kept completely safe both during and after construction.

We always take care to minimise the effect of our work on our neighbours, as we recognise how disruptive it can be living near a large basement project. Ultimately, we know that each and every neighbour has the potential to be our next customer.

For further information about our team’s experience, and for details on how we can add a basement to your home, please feel free to contact us.

Example projects