BASEMENT CONVERSIONS & DIGS
Structural basement digs, conversions and extensions — fully project-managed from party wall agreement through to final finish. Serving North & East London, Essex and Hertfordshire.
REQUEST A QUOTE →ADDING A WHOLE NEW STOREY, BELOW GROUND
Basements are some of the most technically demanding projects in construction — party wall agreements, underpinning, waterproofing and structural engineering all have to come together long before you see a finished surface. RJS Innovative Building project-manages the whole basement job from first structural survey through to final decoration, whether that’s a new-build basement dig under an existing home, a basement extension out under the garden, or converting an existing cellar into proper living space. Fully insured and fully project-managed — no job is too big or too complex for us to plan and deliver properly.
NEW BASEMENT DIGS
Full structural excavation beneath an existing property, underpinned and tanked to create a genuine new storey of usable space.
BASEMENT EXTENSIONS
Extending out beneath the garden to add a self-contained basement extension, connected back into the main house.
CELLAR CONVERSIONS
Converting an existing cellar or crawl space into a fully habitable, damp-proofed room.
WATERPROOFING & TANKING
Structural waterproofing to full British Standard tanking specification, so the finished space stays dry for good.
HOW WE RUN A BASEMENT PROJECT
Survey & party wall
Engineer’s survey, soil report and any party wall agreements sorted before design begins.
Design & itemised quote
Full structural design agreed with you, quoted section by section.
Excavation & structural works
Underpinning, excavation and tanking carried out to specification, project-managed throughout.
Fit-out & sign-off
First and second fix through to final finish, signed off together.
BASEMENT PROJECTS ACROSS NORTH & EAST LONDON, ESSEX AND HERTFORDSHIRE
We regularly carry out basement digs and conversions for clients in Woodford, Wanstead, Chingford, Ilford, Loughton, Chigwell and across Redbridge, Waltham Forest and Epping Forest — everywhere inside the A406, and further out into Essex and Hertfordshire. Wherever you’re based, get in touch to talk through your project.