--- title: "Our Work | Completed Building Projects Chesterfield & Derbyshire | JBW Construction" description: "View completed building projects by JBW Construction across Chesterfield, Matlock, Sheffield, and Derbyshire. 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[Home](/) 2. Our Work Our Work # 150+ Projects Completed Across Derbyshire & Beyond Every project below was managed personally by John from survey to handover. These are real builds for real clients in your area. [Property Extensions](/property-extensions-chesterfield) ## Victorian Terrace Kitchen Extension — Brampton, Chesterfield A 5m single-storey rear extension transforming a cramped galley kitchen into a bright, open-plan kitchen-diner with bi-fold doors opening onto the garden. Structural steelwork removed the original rear wall entirely, creating a seamless flow from the Victorian hallway through to the new space. ### Technical Details The original house had solid brick walls requiring careful connection of the new extension. We installed a 4.2m steel beam to span the full width, supported on padstones built into the existing brickwork. The flat roof uses a warm-deck system with 150mm insulation, achieving U-values well below building regulations. Underfloor heating throughout eliminates the need for radiators. ### Result Completed in 12 weeks. The extension added approximately £45,000 to the property value — three times the client's investment. The family now uses the kitchen-diner as their main living space. [Barn Conversions](/barn-conversion-chesterfield) ## Stone Barn Conversion — Tansley, Near Matlock Conversion of a redundant agricultural barn into a 4-bedroom family home. The project required planning permission from Derbyshire Dales District Council, a protected species survey (bats were present), and close collaboration with the conservation officer. ### Technical Details Original stone walls were retained and repointed using hydraulic lime mortar. New internal walls are timber-framed with breathable insulation to prevent moisture trapping. The original king-post roof truss was cleaned, treated, and left exposed as a feature in the double-height living room. New oak-framed windows were positioned within existing openings to satisfy planning conditions. ### Result Completed in 8 months including planning. The finished home retains the barn's agricultural character while providing modern comfort — underfloor heating, mechanical ventilation with heat recovery, and an EPC rating of B. [Property Extensions](/property-extensions-chesterfield) ## Double-Storey Extension — Dore, Sheffield A double-storey side and rear extension on a 1930s stone-fronted detached house. Ground floor provides a large kitchen-diner; first floor adds a master bedroom with en-suite. The stone front elevation was extended to match existing coursing and colour. ### Technical Details Stone was sourced from a Derbyshire quarry and hand-selected by our stonemason to match the original 1930s stonework. The rear elevation uses matching brick with stone quoins. Two steel beams support the first floor — one spanning 5m across the kitchen and another creating the open-plan link to the existing dining room. ### Result Completed in 16 weeks. Added over £180,000 to the property value according to the client's estate agent. [Loft Conversions](/loft-conversions-chesterfield) ## Dormer Loft Conversion — Ecclesall, Sheffield A rear dormer loft conversion creating a master bedroom with en-suite bathroom and fitted wardrobes. The existing loft had excellent head height but needed structural reinforcement for the new floor loading. ### Technical Details New steel beams support the dormer structure and transfer loads to existing load-bearing walls. The floor was upgraded with engineered joists to meet sound and fire regulations. Insulation between and over rafters achieves U-values of 0.15 W/m²K. ### Result Completed in 7 weeks with the family living in the house throughout. The loft conversion added a fourth bedroom and increased the property value by approximately £60,000. [Garage Conversions](/garage-conversions-chesterfield) ## Garage Conversion & Home Office — Coal Aston, Dronfield Conversion of an integral single garage into a dedicated home office with separate entrance, built-in desk and storage, and independent heating. ### Technical Details The garage door opening was infilled with brickwork matching the existing house, incorporating a window and a new external door. Insulation was added to walls, floor, and ceiling. Cat6 ethernet, multiple power circuits, and dedicated lighting were installed. Acoustic plasterboard on party walls ensures privacy during calls. ### Result Completed in 3 weeks at a cost under £18,000. The client eliminated a daily commute and gained a workspace that impresses clients during video meetings. [Pub Refurbishment](/pub-refurbishment-chesterfield) ## Complete Pub Refurbishment — Chesterfield Full interior refurbishment of a traditional pub including new bar installation, kitchen upgrade to commercial standards, toilet refurbishment, and redecorating throughout. The project had a strict 4-week deadline. ### Technical Details We stripped the existing bar area back to bare walls and installed a new bar counter with granite top, glass-wash stations, and refrigeration housing. The kitchen was upgraded to comply with current food hygiene regulations. New disabled-access toilets were created from an existing storage room. ### Result Completed in 3.5 weeks — ahead of the 4-week deadline. The pub reopened on schedule with a refreshed interior that increased food covers by 40% in the first quarter. Explore Our Services ## See What We Can Build For You [Extensions](/property-extensions-chesterfield)[New Builds](/new-builds-chesterfield)[Barn Conversions](/barn-conversion-chesterfield)[Loft Conversions](/loft-conversions-chesterfield)[Garage Conversions](/garage-conversions-chesterfield)[Refurbishments](/building-refurbishment-chesterfield)[Commercial](/commercial)[All Services](/services) ## Your Project Could Be Next Book a free site survey and let's discuss how we can transform your property. Read our [client reviews](/testimonials) for more proof of quality. [Request Your Free Quote](/contact)[07891 214075](tel:07891214075) FMB accredited · Derbyshire Trusted Trader · £10M insured · 10-year guarantee ![JBW Construction Services Ltd - Trusted Builders in Chesterfield](https://images.leadconnectorhq.com/image/f_webp/q_80/r_1200/u_https://assets.cdn.filesafe.space/yXra3JCgP353TG568Gg2/media/690e5703696129f26a2ce681.webp) Derbyshire's trusted builders delivering quality construction, renovations, and conversions for over 25 years. 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