Extensions
Est. London · SW20
Building
London's finest
spaces.
Extensions, renovations and bespoke new builds — engineered with precision, finished with obsessive care.
Scroll
15+
Years of craft
120
Projects delivered
£40M
Value built
5★
Client rating
The Studio
A new standard for
London construction.
HABuildSmart was founded on a single conviction: that construction can be as considered as the architecture it serves. From the first handshake to the final walkthrough, we bring calm rigour, honest pricing, and hand-finished quality to every square metre.
Whether you're extending a Victorian terrace in Wandsworth or renovating a mews in Chelsea, we build to last — and to love.
Meet the studio
Services
Everything, done properly.
New Builds
Ground-up residential and commercial builds, engineered to last a century.
Extensions
Side-returns, rear extensions and wrap-arounds — seamless additions to your home.
Renovations
Whole-house transformations, respecting heritage, delivering modern comfort.
Loft Conversions
Turning unused roof space into your favourite room in the house.
Kitchens & Bathrooms
Precision joinery, natural stone, and fittings that whisper quality.
Project Management
One point of contact, one contract, zero surprises.
Why HABuildSmart
The details are the difference.
- Fixed-price quotesLine-itemed proposals. No mid-build surprises.
- Directly employed teamNo revolving subcontractors. The face on day 1 is there on day 100.
- Weekly reportingPhotos, cost tracking and next-step clarity — every Friday.
- Fully insured£5m public liability. CHAS accredited. Full compliance.
Materials
Only what will stand the test.
Solid oak. Honed marble. Lime-washed plaster. Solid brass. We source from the same houses trusted by London's leading architects — and never substitute silently.
Material
Herringbone Oak
Material
Honed Marble
Material
Walnut Joinery
Material
Vaulted Timber
Selected work
Recent completions.
Full renovation
Belgravia Townhouse
Extension
Wandsworth Rear Extension
Kitchen & joinery
Chelsea Kitchen
Loft conversion
SW20 Loft Conversion
The Process
Six steps.
Zero surprises.
- 01Discovery call20 minutes. We listen.
- 02Site visitIn-person walkthrough.
- 03Line-itemed quoteEvery cost visible.
- 04Design lock-inMaterials, timeline, budget signed off.
- 05BuildWeekly progress reporting.
- 06HandoverSnagging + 12-month guarantee.
Where we build
A studio for central & south-west London.
We serve homeowners, architects and developers across the capital's most demanding postcodes — from period conservation streets to contemporary new-build plots.
Chelsea
Belgravia
Kensington
Notting Hill
Wandsworth
Wimbledon
Fulham
Battersea
Clapham
Richmond
Barnes
Putney
"Albert and his team turned our tired Victorian terrace into the house we always dreamt of. Fastidious, patient, and honest with money — a rare combination in London."
— Sarah & James · Wandsworth SW18
Journal
Notes from the site.
Materials
Why we still specify honed marble in bathrooms — a 2026 update
Planning
Permitted development for lofts: what actually changed this year
Ready when you are
Let's build something
worth keeping.
A 20-minute call is all it takes to know if we're the right studio for your project.