Home Extensions
Single and double-storey extensions designed around your lifestyle. We handle planning liaison, structural engineering, and full build from foundation to roof.
Yorkshire's Trusted Builders Since 1998
Built right.
Every time.
From single-storey extensions to full new builds, Hargreaves Build Co. delivers exceptional craftsmanship with total transparency — no surprises, just results.
26+
Years Experience
800+
Projects Complete
4.9★
Average Rating
FMB
Registered Member
What We Do
Expertise across
every build type
Whether you're planning a kitchen extension or a complete new build, our experienced team handles every stage from groundwork to finishing.
Renovations & Refurbs
Full and partial property renovations, including loft conversions, basement conversions, and whole-house refurbishments to modern standards.
New Builds
Turnkey new-build homes and small residential developments, from plot preparation and groundworks through to final snagging and handover.
Groundworks
Drainage, foundations, underpinning, and enabling works carried out by our in-house groundworks team with full plant and equipment.
Brickwork & Stonework
Traditional and modern brickwork, pointing, repointing, and stonework to complement the existing character of your property.
Commercial Works
Office fit-outs, warehouse builds, and commercial refurbishments delivered on schedule, with full documentation and warranty packages.
Est. 1998
Why Choose Us
Craft, care,
and communication
We've built our reputation over 26 years on three things: skilled tradespeople, clear communication, and projects delivered on time and on budget.
Transparent Fixed Quotes
Detailed, itemised quotes with no hidden extras. What we quote is what you pay — unless you change the scope.
FMB Registered & Fully Insured
Federation of Master Builders members with £5m public liability insurance and a 10-year structural warranty available.
Weekly Progress Updates
A dedicated project manager keeps you informed at every stage with photo updates and a clear programme of works.
Sustainable Building Practices
We prioritise low-waste construction, responsible sourcing, and energy-efficient build solutions wherever possible.
Our Work
Recent projects
A selection of our recent residential and commercial work across West Yorkshire.
Extensions
Harrogate Rear Extension
Double-storey rear extension with full kitchen-diner & master suite. Completed 14 weeks.
New Build
Wetherby Detached Home
Four-bedroom detached home from groundworks to handover.
Conversion
Headingley Loft Conversion
Dormer loft conversion creating two bedrooms and a bathroom.
Renovation
Ilkley Full Renovation
Complete interior refurb of a 1930s semi-detached property.
Commercial
Leeds Office Fit-Out
Category B fit-out for 40-person professional office space.
Client Reviews
What our clients say
★★★★★
"Hargreaves built our rear extension last year and we couldn't be happier. The team were respectful of our home, turned up every day on time, and the quality of the finish was exceptional. Highly recommended."
★★★★★
"We'd had a nightmare experience with a previous builder, so were nervous about our loft conversion. Hargreaves were a completely different class — clear communication, no nasty surprises, and a brilliant result."
★★★★★
"From the initial quote right through to the final snag list, the whole process was smooth and professional. Our new kitchen extension has completely transformed the house. Worth every penny."
Get In Touch
Let's talk
about your project
Fill in the form and we'll be in touch within one working day to arrange a free, no-obligation site visit and quote.
Contact Details
Telephone
Address
14 Mill Lane, Leeds,
West Yorkshire, LS1 4DQ
West Yorkshire, LS1 4DQ
Office Hours
Mon–Fri: 7:30am – 5:30pm
Coverage Area
Leeds · Bradford · Harrogate · Wetherby · Ilkley · Otley · Skipton and surrounding West & North Yorkshire