From groundworks and house extensions to loft conversions, refurbishments and new build developments — over three decades of skilled trade across Derbyshire and Nottinghamshire, delivered to the highest specification.
A complete building service for domestic and commercial clients. We project-manage every job from start to finish so you only ever have one point of contact.
Single and two-storey extensions designed to add real space and value — from initial groundworks through to final decoration.
Enquire about extensionsFull new-build homes constructed to the highest specification, from foundations and groundworks to handover-ready finish.
Enquire about new buildsCommercial developments, office fit-outs and shell-and-core works delivered to programme for businesses across Derbyshire and Nottinghamshire.
Enquire about commercial workFull property renovations and refurbishments — internal remodels, kitchens, bathrooms and complete makeovers, finished to a high standard.
Enquire about refurbishmentsConvert unused loft space into bedrooms, bathrooms or home offices — fully project-managed from structural work through to decoration.
Enquire about loft conversionsFoundations, drainage, boundary walls, driveways, patios and external works — the unseen detail that makes every build solid.
Enquire about external workA selection of recently completed builds. Click through to the full portfolio for more before/after shots and case studies.
As a Belper-based building company, we welcome enquiries from across Derby and the surrounding Derbyshire area. No job is too big or too small — every client gets the same standard of work.
Start your projectOne point of contact for the whole build. We coordinate trades, scheduling, materials and inspections so you don't have to chase anyone.
Qualified electricians, gas safe plumbers, joiners, brick layers, plasterers, ground workers, decorators, roofers and landscapers — all available through us.
Clear, written quotes upfront and projects delivered to the agreed price. No surprises halfway through the build.
Over 30 years of building experience across Derbyshire and Nottinghamshire, with a long track record of clients who recommend us to friends and family.
Our team are polite, considerate and keep the disruption to your home and routine as low as possible during the build.
Real reviews from real Derbyshire homeowners.
Kevin's been working in the trade for over 30 years and founded K. Smithurst Building Contractors Ltd in 2002. The business is still owner-operated out of Belper — Kevin is on every project, every quote, every site visit.
Most of our work comes through recommendation: clients who used us once, used us again, and told friends and family. That's the standard Kevin works to.
Based in Belper and covering Derby plus the wider Derbyshire area and Nottinghamshire. If you're a little further out, give us a call — we'll usually still come and quote.
A clear, four-step process that keeps every project on track and the client in the loop the whole way through.
Call, message us, or fill in the form below. We'll book a site visit to see the property and answer any questions.
A clear, itemised quote covering scope, materials, labour and timeline — no hidden extras, no jargon.
We coordinate every trade and every inspection. You get regular progress updates and a single point of contact.
Final walk-through together, any minor snags sorted, and full handover with workmanship backed up.
Call us directly, drop us a WhatsApp, or fill in the form and the message will open WhatsApp ready to send. We aim to respond to all enquiries the same working day.
Tell us about your project — we'll come back to you the same working day.
Whether it's a single-storey extension or a full new build, we'd love to talk it through. Pick up the phone or drop us a WhatsApp — no pressure, no obligation.