HomeAboutServices Areas We Cover Our WorkReviewsSpecialsContact07784 144802Free Estimate - Home - /Services - /House Extensions Crawley & West Sussex House Extension Specialists # More Space Without Moving —Extensions Built to MatchYour Home and Budget Burton Builds delivers house extensions that add real living space, match the existing property and handle the entire build process from groundworks to final finish — without the stress of managing multiple trades. Request a Free Estimate07784 144802 14+ Years Experience50+ Extensions BuiltFully Insured 14+ Years Experience 50+ Extensions Built Fully Insured Building Regs Managed Written Guarantee ## What Our Extension Service Covers A house extension is one of the most impactful improvements you can make to your property. Burton Builds manages the full extension process across Crawley, Horsham and West Sussex. We build single storey rear extensions, side return extensions, double storey extensions, and wrap-around extensions. Every project includes groundworks, structural masonry, roofing, windows, doors and internal finishing. Our extension service is for homeowners who need more living space without the cost and disruption of moving house. Professional management matters because extensions involve multiple building disciplines, regulatory requirements and critical sequencing decisions that directly affect cost, timeline and structural quality. ### Related Services - Groundworks - Bricklaying - Carpentry - Patios & Paving - Landscaping ### Areas We Cover CrawleyHorshamHaywards HeathEast GrinsteadBurgess HillRedhillReigateHorleyBrighton Our Work ## Extension Build Progress and Brickwork From foundations and blockwork through to matching brickwork and roof completion — we manage each stage to ensure structural integrity, building regulation compliance and a finish that blends with the existing property. Our Work ## Finished Extensions with Matching Brickwork Completed extensions are finished with brickwork that matches the existing property, proper fascia detailing, and weatherproofing that ensures a seamless integration with the original building. ## What Goes Wrong With a Badly Managed Extension The most common extension failure is poor groundwork preparation, leading to settlement cracks, damp penetration and structural movement within the first few years. Communication breakdown between multiple trades is the second biggest risk. Without a single point of management, sequencing errors cause delays, rework and additional costs. Many homeowners underestimate the regulatory requirements for extensions, leading to retrospective building control issues that affect insurance and resale. Choosing the cheapest builder typically results in mismatched brickwork, poor weatherproofing and internal finishing that does not meet the standard expected. Our Process ## How We Deliver Results, Every Single Time 1 ### Design & Planning We assess feasibility, discuss your requirements, advise on planning implications and produce a clear project plan. 2 ### Groundworks & Foundations Excavation, foundations, drainage and damp-proofing are completed to building regulation standards. 3 ### Structural Build Walls, steels, roof structure and weatherproofing are installed by our experienced team. 4 ### Windows, Doors & Roofing Fenestration and roofing are fitted, making the structure watertight and secure. 5 ### Internal & External Finish Plastering, flooring, electrics coordination and external landscaping complete the project. 6 ### Sign-Off & Handover Building control sign-off, final inspection and clean handover with all documentation provided. Why It Matters ## The Benefits You Get When You Choose Burton Builds ### More Living Space An extension adds the room you need without the cost, disruption and stamp duty of moving house. ### Increased Property Value A well-built extension typically adds 10-20% to your property value. ### Single Point of Contact Rhys manages the entire project — you deal with one person, not multiple trades. ### Building Regs Handled We manage building control applications and inspections throughout the build. ### Matched Brickwork We source matching bricks and ensure the extension looks like part of the original property. ### Outdoor Integration We handle the patio, landscaping and external works as part of the extension project. ## Extension Types, Methods and Technical Approach Single storey rear extensions are the most common project we deliver. These typically extend the kitchen or living room by 3-6 metres, with bi-fold or sliding doors opening onto a new patio area. Side return extensions reclaim the narrow alley space alongside terraced and semi-detached properties, creating a significantly wider kitchen or dining area. Double storey extensions add both ground floor and first floor space, requiring careful structural planning to manage load paths through the existing building. All extensions are built on reinforced concrete foundations designed for the specific ground conditions on your site. We excavate to the depth specified by building control. We use cavity wall construction with appropriate insulation, damp proof courses and cavity trays to meet current building regulation thermal and moisture performance standards. Roof construction options include flat roofing with EPDM or GRP systems, pitched roofs with tiles or slates matched to the existing property, and lantern or skylight installations. Want to discuss your project? Get in touch or call us on 07784 144802 for a free, no-obligation estimate. See our recent house extension specialists projects or read Burton Builds customer reviews. Looking for this work in a specific town? See extensions in Crawley, extensions in Horsham, extensions in Reigate or extensions in East Grinstead. FAQs ## Common Questions Answered ### svg]:rotate-180 py-3 text-left text-sm font-semibold text-card-foreground hover:no-underline md:py-4 md:text-base" data-radix-collection-item="">How much does a house extension cost in West Sussex? ### svg]:rotate-180 py-3 text-left text-sm font-semibold text-card-foreground hover:no-underline md:py-4 md:text-base" data-radix-collection-item="">Do I need planning permission for an extension? ### svg]:rotate-180 py-3 text-left text-sm font-semibold text-card-foreground hover:no-underline md:py-4 md:text-base" data-radix-collection-item="">How long does an extension take to build? ### svg]:rotate-180 py-3 text-left text-sm font-semibold text-card-foreground hover:no-underline md:py-4 md:text-base" data-radix-collection-item="">Do you handle building regulations? ### svg]:rotate-180 py-3 text-left text-sm font-semibold text-card-foreground hover:no-underline md:py-4 md:text-base" data-radix-collection-item="">Can you match the existing brickwork? ### svg]:rotate-180 py-3 text-left text-sm font-semibold text-card-foreground hover:no-underline md:py-4 md:text-base" data-radix-collection-item="">Do you handle the landscaping after the extension? ## Ready to Add Space to Your Home? Book a free site survey and receive a detailed extension estimate. We manage the entire process from design to handover. Request a Free Estimate07784 144802 Home·All Services·Areas We Cover·Our Work·Reviews·Contact· Groundworks· Bricklaying· Carpentry Quality builds that stand the test of time. Serving West Sussex and surrounding areas for over 14 years. - ServicesLandscaping - Driveways - Patios & Paving - Extensions - Bricklaying - Fencing - Carpentry - Groundworks - Garden Renovations Areas We Cover - Crawley - Horsham - Redhill - Brighton - East Grinstead - Burgess Hill - Haywards Heath - Horley - Reigate Contact - 07784 144802 - burtonbuilds@hotmail.com - Furnace Green, CrawleyHours Monday – Sunday: 08:00 – 18:00 ### Popular Local Pages Driveways in CrawleyDriveways in HorshamDriveways in ReigateDriveways in East GrinsteadPatios & Paving in CrawleyPatios & Paving in HorshamPatios & Paving in ReigatePatios & Paving in East GrinsteadLandscaping in CrawleyLandscaping in HorshamLandscaping in ReigateLandscaping in East GrinsteadExtensions in CrawleyExtensions in HorshamExtensions in ReigateExtensions in East Grinstead AboutServicesAreasOur WorkContactPrivacy PolicyTerms & ConditionsCookie Policy © 2026 Burton Builds. All rights reserved. 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