Helping You Grow Into Your Space



Project Planning


Specialists in Basement, Structural Alterations, Building Work & Fit Out Construction

Room Below is one of the longest established basement contractors in the UK.

Established in 1992, our team of experts specialise in basements, structural alterations, building work and fitout for developers, housebuilders and private clients. Room Below – your specialist basement room company covering London and throughout the UK.

Our Services






Projects Completed

We’ve helped over 250 customers complete the basement renovation of their dreams

Years In Business

We formed in 1992 and have been setting the standard in basment room construction ever since

Years Of Experience

Our team have combined industry experience of over 100 years of basement room design & construction

Room Below specialise in the design and construction of basment rooms, both retrofit and new build basements, creating extra space for today’s modern living by adding one or more rooms to the plan area of your property and sometimes beyond.

Whether you are planning to convert an existing cellar into a stylish underground room, or construct a completely new basement room where none currently exists, or include a basement room as part of a renovation or new build development, Room Below have an option for you.

As leaders in the field of basement room construction, we can provide pre-engagement advice to architects, consulting engineers, developers and home owners as to what can be achieved, and provide budgetary guidance at any early stage. We cover basement construction in London, Surrey, Buckinghamshire Hertfordshire and across the UK.

Room Below – basement room design and construction specialists covering London and the South East.