JLS Building & Property Development is a family-run construction company based in Biggleswade with over 30 years' experience, delivering high-quality residential and commercial projects across Bedfordshire, Hertfordshire, Cambridgeshire and Buckinghamshire.
From single and double-storey house extensions and loft conversions to kitchen and bathroom renovations, commercial fit-outs and planned facilities maintenance, every project is fully managed from first survey to final handover. We are accredited by the Federation of Master Builders and SafeContractor.

Single and double-storey extensions, rear, side and wraparound builds, plus garage and loft conversions, managed from groundworks through to handover.

Kitchen, bathroom and utility room renovations, with bespoke joinery fitted to the room rather than bought to fit it.

Refurbishment, office fit-outs, alterations and dilapidations for landlords, agents and occupiers, phased around live operations where needed.

Planned and reactive maintenance for commercial property, with compliance testing scheduled and managed across single sites or portfolios.
Accredited and independently checked:
FMB member 169127 and SafeContractor approved, certificate CD3243. Both appear on the public registers, we publish the numbers so you can look us up.
Vetted trades, and the responsibility stays with us:
Our own team does the building work. Specialist trades come from subcontractors we've vetted and worked with before, not whoever happens to be free that week. Whoever holds the tools, the job is ours and so is putting it right.
Family-run, and you'll know who:
Three of us share a surname. The people managing and running your project are named and pictured on our About page, so you know who's coming before they arrive.
Over 30 years in the trade:
Long enough to have met most of what an older building can hide, and to price for it before it appears rather than after.
Based in Biggleswade, not covering from a distance:
Most of our work is within half an hour of us. That's the difference between looking at a problem this week and fitting you in next month.
Rated 5.0 from Google reviews
Read them in full on our Google Business section below, every one from a real client on a real job.

An extension to a village property near Welwyn, detailed to match the existing period brickwork and roofline rather than contrast with it.

A complete renovation of a three-bedroom home, including a full bathroom refit and modernisation throughout, delivered as a single programme.

A commercial warehouse refurbishment on Eldon Way, Biggleswade, a full internal upgrade delivering a functional, modern workspace for the occupier, delivered within a live environment.

A full ground-floor refurbishment taking in the kitchen, utility, living room, dining room and home office, finished with a continuous poured resin floor.
Hitchin, Letchworth, Baldock, Stevenage, Welwyn



Clear communication is maintained throughout every stage of a project, whether it involves commercial construction, residential construction, or our landscaping services. This ensures that clients are kept informed from the initial planning phase all the way through to completion. If you have any questions, specific requirements, or would like to request a quotation, please get in touch, and a member of our team will be happy to assist.
Biggleswade, UK
A family run construction company known for quality and professionalism.
Based in Biggleswade, Bedfordshire, we have built a strong reputation for delivering high-quality work across the surrounding areas.
Copyright © 2026 JLS Building & Property Development Ltd - All Rights Reserved.
Registered in England and Wales. Company No. 16751323.
+441767 235673
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