NU Projects has been building basements in London since 2010, across the capital and through a lot of different ground. Adding floor area under a house is the one move available when there is nothing left above it, and it is also the most technically demanding domestic work there is.
Adding space in prime London
In Fulham, Chelsea, Kensington, Mayfair and Belgravia there is no spare land and there are planning restrictions on almost every elevation. A basement expands the house downwards without changing what the street sees.
What London owners put down there
Extra bedrooms and utility rooms, and then cinemas, gyms, wine rooms and pools. The rooms that suit a basement are the ones that do not need a window, which is why plant, storage and cinema go down first and bedrooms need a light well.
London planning
London boroughs run strict basement policies, with requirements for traffic management plans, structural engineering calculations, soil testing and flood risk assessments. Each borough sets its own, so the route depends on the address.
NU Projects has a record of getting basement approvals through. We work with specialist consultants on the site construction management plan and the eco home assessment, and we can say early whether a basement is realistic at your address.
If you are in London and looking to add space underneath, we can walk you through it. Published rates for basement work are on our cost calculator, and completed work is on the projects page.
If you would like to speak to us about a basement, tell us about the house, call the studio on 020 7731 6841, or message us on WhatsApp. We answer within a few hours, weekends included.
Published 27 September 2024. Written by the NU Projects studio, edited since for house style and accuracy.