Your local building contractor
J B Building Contractor is a Retford-based team of fully qualified builders, undertaking all aspects of building work across Nottinghamshire.
We take on all aspects of building work from start to finish, extensions, new builds, barn and property conversions, renovations, plastering, rendering, groundworks and landscaping. Using both modern and traditional methods, we bring the whole project together, inside and out. From a single job to a full build, you'll get one qualified team, honest advice and a finish built to last.
- All aspects of building work
- Extensions & new builds
- Barn & property conversions
- Renovations & refurbishments
- Plastering, rendering & groundworks
- Patios, driveways & landscaping

Thorough, honest, tidy
Free quote & consultation
We visit, talk through your project and give you a clear, honest quote with realistic timeframes.
Plan & prepare
We handle the details, drawings and building control, and prepare the site properly before we start.
Build it right
Fully qualified builders using modern and traditional methods, with tidy working and regular updates.
Finish & handover
A quality finish, snags sorted, and a team you can rely on long after the job is done.
What our customers say
“James and team fitted bi-fold doors, laid a beautiful rainbow sandstone patio, and did loads of plastering, painting, drain work and a flat roof, they even dug a trampoline hole and removed 24 tonnes of earth! You name it, he's done it. One talented guy who knew exactly what I wanted and went the extra mile every day. James brought it all together, inside and out.”
Also recommended by Chiv Wright & Abi Paterson
One qualified team, from quote to handover
Every job starts with a free site visit, not a price guessed over the phone. We measure the actual space, talk through what you want from it, and follow up with a clear written quote before any work is booked in. There's no separate sales team handing the job over to a different crew, the person who quoted it is the person doing the work.
That applies whether it's a single room of plastering or a full extension. Keeping the same qualified team on site throughout, rather than bringing in whoever's available that week, is what lets us give an honest answer on timescales and stand behind the finish once we've packed up and gone.
We're based in Retford and take on projects across Nottinghamshire, including Worksop, Gainsborough, Newark, Ollerton, Tuxford, Bawtry, Blyth and Bircotes. Most jobs fall within a short drive of Retford, though we're happy to travel further for the right project.
If a job touches more than one trade, an extension that needs groundworks and plastering, or a renovation with new patios and driveways to finish it off, it's handled as one project by the same team rather than treated as separate contracts. That usually means fewer delays and one point of contact for the whole job.
What sets us apart as a building contractor
One team, all trades
A lot of building projects run into trouble when different trades don't co-ordinate properly. One contractor finishes, the next can't start because something wasn't left right, the homeowner ends up in the middle trying to sort it out. With J B Building Contractor, that problem doesn't exist. We handle all aspects of the work ourselves, from the groundworks and structural elements right through to plastering, rendering and the final finish on your driveway or patio. One team, one point of contact, one job managed properly from start to finish.
That approach also means we can give you a realistic overall timescale and stick to it, because we're not waiting on someone else's availability to get the next stage started. When we say a project will be finished by a certain date, it's because the team doing the work is the same team who committed to it.
Honest quotes, no surprises
Every quote starts with a free site visit. We won't give a price over the phone for a job we haven't seen, because a number guessed without seeing the actual space is rarely the number the job ends up costing. We look at the site, talk through what you're after, and produce a clear written quote that covers what's included and what isn't.
If something comes up during the work that changes the scope, we'll discuss it with you before doing anything extra, not after. That straightforward approach to pricing is one of the main reasons customers come back to us for their next project and recommend us to people they know. Building work is a significant investment and you deserve to know exactly what you're getting for your money.
Modern and traditional methods
We use both modern and traditional building methods depending on what the project needs. Some jobs suit modern materials and techniques; others, particularly period properties or extensions on older buildings, need an approach that matches the existing construction. The Nottinghamshire building stock includes everything from Victorian terraces to newer builds, and we're experienced working on all of them.
That range of experience is particularly valuable on renovations and refurbishments, where matching the existing fabric of the building matters as much as the quality of the new work. Getting it right first time saves the cost and disruption of going back over it later, which is something we always aim to avoid.
Based in Retford, working across Nottinghamshire
We're based in Retford and work throughout Nottinghamshire, including Worksop, Gainsborough, Newark, Ollerton, Tuxford, Bawtry, Blyth and Bircotes. Most of our customers are located within a short drive of Retford, though we take on the right projects further afield when the timing and scope suit us.
Working consistently in the same area means we know the local planning and building control requirements, understand the ground conditions that affect foundations and drainage in different parts of Nottinghamshire, and have built up a reputation with customers and trades in the area over a number of years. If you're in or around Retford or anywhere in North Nottinghamshire, call or WhatsApp on 07581 065535 to arrange a free site visit and quote.
Ready to start your project?
Tell us about the job and we'll give you honest advice and a clear quote, no pressure.