--- title: "Builders in Doncaster | Extensions, Lofts & Joinery" url: https://johnsonsbuildingservicesyorkshire.co.uk/areas/doncaster description: "Doncaster builders for extensions, loft conversions and bespoke joinery across DN1, DN3, DN4, DN10, DN11. Fixed quotes within 48 hours, 10-year guarantee." lang: en-GB --- Image: Yorkshire family home representative of properties Johnsons Building Services renovates and extends in Doncaster (https://johnsonsbuildingservicesyorkshire.co.uk/assets/cta-yorkshire-home-SjschQWs.jpg) South Yorkshire # Trusted Builders in Doncaster Bessacarr, Bawtry and Tickhill homes — extensions, loft conversions and bespoke joinery delivered to a fixed written quote within 48 hours. Free quote in Doncaster: https://johnsonsbuildingservicesyorkshire.co.uk/contact 07427 916462: +447427916462 Postcodes covered: DN1 · DN3 · DN4 · DN10 · DN11 About Our Doncaster Service ## Local builders, working in Doncaster every week Doncaster is part of our regular weekly run. We're 30 minutes from DN-postcodes from our Barnsley yard, and have current jobs across Bessacarr (DN4), Bawtry (DN10) and Tickhill (DN11) most months. Doncaster's housing stock includes a mix of inter-war and post-war semis in town, larger 1980s–2000s detached homes in Bessacarr and Cantley, and character properties out towards Tickhill and Bawtry. Most plots have room to extend. Every job is project-managed end-to-end by our own team. One foreman on site, one owner reachable directly. Why Choose Us in Doncaster ## What makes us the right builders for Doncaster ### Bespoke joinery on site Many Doncaster jobs include bespoke fitted wardrobes, alcove cupboards or staircase work. We have an in-house joiner so we don't subcontract that work to outside firms. ### Loft conversion specialists Hip-to-gable, dormer and L-shape lofts delivered to Building Regs across DN-postcodes. Full structural sign-off, escape windows, fire-rated stairs. ### Doncaster Council planning We handle applications, drawings and building control submissions to Doncaster MBC on your behalf. ### Family-run, locally accountable We're not a national franchise. Same names answer the phone in 2026 as in 2016. Most-Built Services ## What we build most often in Doncaster ### House Extensions in Doncaster Add the room your family actually needs without the chaos of multiple contractors. Fully project-managed extensions delivered on a fixed written price, with a clear weekly programme from groundworks to final paint. Learn more https://johnsonsbuildingservicesyorkshire.co.uk/services/house-extensions ### Loft Conversions in Doncaster Turn the dead space above your head into the most-used room in the house. Dormer, hip-to-gable, mansard and Velux conversions fully built and certified by one trusted Barnsley team. Learn more https://johnsonsbuildingservicesyorkshire.co.uk/services/loft-conversions ### Carpentry & Joinery in Doncaster From a single internal door to a full staircase rebuild — time-served carpentry, scribed flush to your walls and floors. The difference between joinery you notice and joinery that just looks right. Learn more https://johnsonsbuildingservicesyorkshire.co.uk/services/carpentry ### Kitchen Fitting in Doncaster Stop coordinating four trades and three delivery dates. We handle the rip-out, plumbing, electrics, plastering, fitting, tiling and final snag — so your kitchen is finished on the date we promised. Learn more https://johnsonsbuildingservicesyorkshire.co.uk/services/kitchen-fitting ### Bathroom Fitting in Doncaster Bathrooms fail when they leak. We waterproof first, tile second, and stand behind the result for a decade. One team handles plumbing, tiling, electrics and finish — no excuses, no sub-contractor blame. Learn more https://johnsonsbuildingservicesyorkshire.co.uk/services/bathroom-fitting ### Renovations in Doncaster First fix to final paint, managed end-to-end. Whether it's a tired Victorian terrace or a 1960s semi crying out for a rewire, we strip back, upgrade and finish on a fixed written price. Learn more https://johnsonsbuildingservicesyorkshire.co.uk/services/renovations Local Knowledge ## Doncaster property types we work with ### 1980s–2000s detached (Bessacarr, Cantley) Modern footings, cavity construction. Wrap-around extensions, garden rooms, garage conversions and master-suite extensions in the £80–180k range. ### Inter-war semis (Doncaster town, Edenthorpe) Cavity walls, decent gardens. Two-storey side extensions and rear kitchen-diners dominate. £55–100k typical. ### Character properties (Tickhill, Bawtry) Conservation considerations sometimes apply. We work with local heritage consultants where required. ### Newer estate homes (Sprotbrough, Kirk Sandall) Straightforward extensions and conversions. Common briefs: orangery rear extension, study/home office addition. Recent Work ## Recent projects completed in Doncaster View full portfolio (https://johnsonsbuildingservicesyorkshire.co.uk/our-work) Recent build ### Bespoke fitted wardrobes, DN4 Bessacarr master bedroom — floor-to-ceiling fitted wardrobes with soft-close doors, internal LED lighting, drawer banks and a matching dressing table. All hand-built on site. 2 weeks. Recent build ### Single-storey rear extension + loft, DN3 Edenthorpe semi — combined rear extension, kitchen replacement and L-shape loft conversion. 16 weeks. Recent build ### Whole-house renovation, DN10 Bawtry character property — strip-back to brick, full rewire, replumb, two bathrooms, kitchen, redecoration. 19 weeks. Building Control & Planning ## Working with Doncaster's council Doncaster work is submitted to Doncaster MBC Building Control. Permitted development covers most extensions; planning applications are prepared and submitted in-house where required. FAQ ## Doncaster builder FAQs ### Are you happy to travel to DN-postcodes? ### Can you build bespoke joinery, not just buy units? ### How much does a loft conversion cost in Doncaster? ### Do you guarantee your work? Image: Beautifully completed traditional Yorkshire stone family home with modern rear extension at golden hour (https://johnsonsbuildingservicesyorkshire.co.uk/assets/cta-yorkshire-home-SjschQWs.jpg) ## Building in Doncaster? Let's talk. Free site visit. Itemised written quote within 48 hours. No obligation. Request a Free Quote: https://johnsonsbuildingservicesyorkshire.co.uk/contact 07427 916462: +447427916462 Family-run · 20+ years building across Yorkshire · Fully insured · 10-year workmanship guarantee Call Now: +447427916462 Free Quote: https://johnsonsbuildingservicesyorkshire.co.uk/contact Essential cookies only — no tracking. Cookie Policy (https://johnsonsbuildingservicesyorkshire.co.uk/cookie-policy) ## Structured data ```json [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://johnsonsbuildingservicesyorkshire.co.uk/#organization", "name": "Johnsons Building Services (Yorkshire) Ltd", "url": "https://johnsonsbuildingservicesyorkshire.co.uk", "logo": "https://johnsonsbuildingservicesyorkshire.co.uk/favicon.png", "image": "https://johnsonsbuildingservicesyorkshire.co.uk/favicon.png", "telephone": "+44 7427 916462", "email": "enquiries@johnsonsbuildingservicesyorkshire.co.uk", "founder": { "@type": "Person", "name": "Daniel Glynn Johnson" }, "foundingDate": "2004", "address": { "@type": "PostalAddress", "streetAddress": "55 Copeland Road", "addressLocality": "Barnsley", "addressRegion": "South Yorkshire", "addressCountry": "GB" }, "sameAs": [ "https://johnsonsbuildingservicesyorkshire.co.uk", "https://www.facebook.com/profile.php?id=100064106648819" ] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://johnsonsbuildingservicesyorkshire.co.uk/#website", "url": "https://johnsonsbuildingservicesyorkshire.co.uk", "name": "Johnsons Building Services (Yorkshire) Ltd", "inLanguage": "en-GB", "publisher": { "@id": "https://johnsonsbuildingservicesyorkshire.co.uk/#organization" }, "potentialAction": { "@type": "SearchAction", "target": "https://johnsonsbuildingservicesyorkshire.co.uk/?s={search_term_string}", "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "@type": "GeneralContractor", "name": "Johnsons Building Services — Doncaster", "areaServed": { "@type": "City", "name": "Doncaster" }, "address": { "@type": "PostalAddress", "addressLocality": "Barnsley", "addressRegion": "South Yorkshire", "addressCountry": "GB" }, "telephone": "+44 7427 916462", "description": "Doncaster builders for extensions, loft conversions and bespoke joinery across DN1, DN3, DN4, DN10, DN11. Fixed quotes within 48 hours, 10-year guarantee.", "url": "https://johnsonsbuildingservicesyorkshire.co.uk/areas/doncaster" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Are you happy to travel to DN-postcodes?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — DN1, DN3, DN4, DN10 and DN11 are within our regular weekly working radius." } }, { "@type": "Question", "name": "Can you build bespoke joinery, not just buy units?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — our in-house joiner builds fitted wardrobes, alcove cupboards, stairs, doors and dressing tables on site, made-to-measure rather than off-the-shelf." } }, { "@type": "Question", "name": "How much does a loft conversion cost in Doncaster?", "acceptedAnswer": { "@type": "Answer", "text": "A typical hip-to-gable loft with en-suite runs £55–80k. A dormer-only conversion is often £40–55k. Free written quote within 48 hours." } }, { "@type": "Question", "name": "Do you guarantee your work?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — 10-year workmanship guarantee in writing on every job, plus £2m public liability insurance." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://johnsonsbuildingservicesyorkshire.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Service Areas", "item": "https://johnsonsbuildingservicesyorkshire.co.uk/areas" }, { "@type": "ListItem", "position": 3, "name": "Doncaster" } ] } ] ```