4SP Group Call01376 311 252

Construction contractors in London

Basement Construction in London

Creating functional basement space for residential and commercial properties across London and the South East.

Basement Construction Options

Sub-Basement Construction

Multi-layer basement construction that creates usable space on multiple levels below a property, increasing both space and value.

Under Garden Conversion

Open excavation extends your property into the garden, creating a bespoke under garden basement.

Party Wall Compliance

We ensure basement builds comply with the Party Wall Act, handling neighbour negotiations with sensitivity and tact.

Why Choose 4SP Group

Practicality, safety, longevity and aesthetics are never overlooked by our professional team.

Full project management and years of experience providing quality solutions have allowed us to perfect our process, working independently and flexibly around your schedule.

We maintain our high standards at all times, with a team who are all extremely experienced within the industry.

Our Basement Projects

Areas We Cover

Ready to Start Your Project?

Contact us today for a free, no-obligation quote from our construction specialists.

Phone
01376 311 252
Email
info@4sp.group
Address
Rayne, Braintree, CM77 6SR