Extensions & Conversions

Adding to or repurposing existing buildings — rear extensions, change-of-use conversions, loft and basement schemes — for developers on small to mid-size sites across London.

Priced against the planning risk, not around it.

We model the GIA uplift and planning constraints alongside your consultant before capital is committed. Once consent is in, one team takes the scheme from strip-out or substructure through to PC, with a single line of accountability to your finance director.

“They priced the GIA uplift against the planning risk before we bought the site. The numbers held up.”

— SME developer, west London

Existing building mid-conversion with retained facade

West London Class MA conversion — eight units, consent to PC in eleven months.

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Common questions

Do you handle change-of-use conversions?

Yes, including PD schemes (Class MA office-to-resi) and full-planning conversions. We coordinate prior-approval submissions, conditions discharge and Building Control.

Will you work with our planning consultant?

Yes. They sit alongside our pre-construction team and we work to their planning strategy. Our role is to keep the build deliverable against what they've consented.

Can you take on a basement scheme?

Yes — underpinning, raft and piled-wall basements up to two storeys below existing ground. We use a specialist sub-contractor for the dig and structure, under our principal contract.

Let's Discuss your project

We have delivered building, refurbishment, and maintenance work across London for private clients, commercial operators, and public-sector organisations since 2006.

Get a quote

All work is fully insured and backed by 25 year guarantee