An extension is a powerful way to add value, space, and a refined aesthetic layout to your property. As an established home extension builder in Leeds, Heritage Construction specializes in designing and building high-specification single and double-storey extensions across Roundhay, Alwoodley, Horsforth, and the surrounding areas.
Whether you require a single-storey kitchen-diner extension with bi-folding glass doors or a complex double-storey wrap-around extension adding extra bedroom suites, our team handles all design elements, structural steel installations, and interior plastering and joinery to guarantee an premium finish. If you are searching for a trusted extension builder in Leeds, our experienced builders ensure your project is delivered on time, on budget, and to the highest standards.
Roundhay, Alwoodley, Horsforth, Adel, Chapel Allerton, Wetherby, Otley, Ilkley, and surrounding Leeds areas.
ESTIMATED TIMELINESingle Storey: 8 - 12 Weeks
Double Storey: 14 - 20 Weeks
From architectural foundations to premium glazing, we deliver turnkey builds in Leeds.
Assisting you through initial architectural design drafts, structural steel layout calculations, and managing building regulations control and council planning permissions.
Executing ground excavation, pouring concrete strip or raft foundations, and erecting heavy-gauge structural steel frames to support wide open-plan openings.
Installing large-format sliding doors, bi-fold doors, structural glass corners, premium Velux rooflights, and weatherproofing roofs with high-performance membranes.
Managing the complete internal fit-out, including insulation, underfloor heating loops, plumbing, second-fix electrics, plastering, and custom joinery detailing.
From excavation to final delivery — explore our construction milestones in Roundhay, Leeds.
Site clearance, deep trench excavation, steel reinforcement cage placements, and concrete footer pour certified by local building control inspectors.
Erection of structural steel portal frames to support the rear wall, brickwork and blockwork masonry, structural timber roof truss assembly, and insulation fitment.
Installation of high-specification architectural glazing, floor-to-ceiling glass bi-folds, weatherproofing details, custom siding, and internal finishing joinery.
Frequently asked questions about our planning, build, and delivery processes
Many extensions fall under Permitted Development rights, which do not require full planning permission. However, this depends on the height, boundary distance, and size. Heritage Construction handles all planning documentation and liaises directly with Leeds City Council to verify compliance.
According to local property metrics, a well-built double-storey extension in premium Leeds locations like Alwoodley can increase a property's market value by up to 20-25% by adding extra bedrooms and open-plan ground floor living spaces.
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