--- title: "Design & Build Kitchen Diners Brighton | Open-Plan Kitchen Specialists | Masters Group" description: "Expert kitchen-diner design and build in Brighton & East Sussex. RSJ installation, load-bearing wall removal, and complete kitchen-diner conversions. 30+ years experience. Free estimates." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Service", "name": "Design & Build Kitchen Diners", "description": "Professional kitchen-diner design and build services in Brighton and East Sussex, including RSJ installation, load-bearing wall removal, and complete kitchen fit-out.", "provider": { "@type": "LocalBusiness", "name": "Masters Group", "telephone": "01273110607", "url": "https://mastersgroup.uk", "address": { "@type": "PostalAddress", "streetAddress": "17 Colebrook Road", "addressLocality": "Brighton", "postalCode": "BN1 5JH", "addressCountry": "GB" } }, "areaServed": [ { "@type": "City", "name": "Brighton" }, { "@type": "City", "name": "Worthing" }, { "@type": "City", "name": "Eastbourne" }, { "@type": "City", "name": "Horsham" } ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does a kitchen-diner conversion cost in Brighton?", "acceptedAnswer": { "@type": "Answer", "text": "A typical kitchen-diner conversion in Brighton ranges from £30,000 to £65,000. The variation depends on structural complexity (single vs double storey above), kitchen specification, and the extent of associated plumbing, electrical, and decoration work. We provide fixed-price quotes after a detailed survey." } }, { "@type": "Question", "name": "Do I need planning permission for a kitchen-diner conversion?", "acceptedAnswer": { "@type": "Answer", "text": "In most cases, no. Removing an internal wall and installing an RSJ is covered under building regulations rather than planning permission. However, if your property is listed or in a conservation area, additional permissions may be required. We advise on this during the initial consultation." } }, { "@type": "Question", "name": "How long does a kitchen-diner conversion take?", "acceptedAnswer": { "@type": "Answer", "text": "A standard kitchen-diner conversion takes 4–8 weeks from start to completion. This includes structural work (1–2 weeks), first-fix plumbing and electrics (1 week), plastering (1 week), and kitchen installation and decoration (2–3 weeks)." } }, { "@type": "Question", "name": "Is my wall load-bearing?", "acceptedAnswer": { "@type": "Answer", "text": "In most Brighton terraces and semis, the wall between the kitchen and dining room is load-bearing. We assess this during the initial survey and commission structural engineering calculations to determine the correct beam specification before any work begins." } }, { "@type": "Question", "name": "Do you handle building control?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We manage the entire building control process through our long-standing relationship with LABC. All structural work is inspected and signed off, and you receive completion certificates for your records." } }, { "@type": "Question", "name": "Can you install an island unit in my new kitchen-diner?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We regularly install island units as part of kitchen-diner conversions. This involves rerouting water supply and waste pipes through the floor slab, plus adding dedicated electrical points for hob extraction or integrated appliances." } }, { "@type": "Question", "name": "What areas do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "We cover Brighton, Hove, Worthing, Eastbourne, Littlehampton, Bognor Regis, Burgess Hill, Haywards Heath, Horsham, and the wider East Sussex area." } }, { "@type": "Question", "name": "What guarantee do you provide?", "acceptedAnswer": { "@type": "Answer", "text": "All structural work is covered by our comprehensive insurance. Kitchen installations carry manufacturer warranties on units and appliances. We stand behind every project we deliver and address any issues promptly." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://mastersgroup.uk/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://mastersgroup.uk/#services" }, { "@type": "ListItem", "position": 3, "name": "Design & Build Kitchen Diners" } ] } ] --- 17 Colebrook Road, Brighton, BN1 5JH info@mastersgroup.uk [![Masters Group](/assets/masters-logo-Dn445ZsE.png) MASTERS GROUP ](/) [Home](/)[About](/about) Services Areas [Our Work](/our-work)[Warranty](/warranty)[Reviews](/reviews)[Blog](/blog)[Contact](/contact) [01273 110607](tel:01273110607)[Get Estimate](/contact) ![Design & Build Kitchen Diners services by Masters Group Brighton](/assets/kitchen-diners-BqnTrme9.jpg) - [Home](/) - [Services](/#services) - Design & Build Kitchen Diners Masters Group # Design & Build Kitchen Diners Open-Plan Living Specialists in Brighton & East Sussex Transform your separated kitchen and dining room into a stunning open-plan kitchen-diner — without managing structural engineers, multiple trades, or building control yourself. One team handles everything from RSJ design to final worktop installation. [Request Free Estimate](/contact) [01273 110607](tel:01273110607) 30+ years experience · 60+ kitchen-diners delivered · Fully insured · Zero warranty claims 30+ Years Kitchen-diner experience Structural Expertise In-house RSJ design Single Point of Contact One project manager throughout Fixed-Price Quotes No hidden costs ## What Is a Kitchen-Diner Conversion? A kitchen-diner conversion involves removing the wall between your kitchen and dining or living room to create a single, open-plan space. In most Brighton properties — particularly Victorian and Edwardian terraces — this wall is load-bearing, requiring a structural steel beam (RSJ) to transfer the load safely before the wall can be removed. This service is for homeowners who want more usable living space, better natural light flow, and a modern layout without extending or moving. It is the single most impactful renovation for adding value and transforming daily living in a typical Brighton property. A properly designed kitchen-diner creates a social hub where cooking, dining, and family time happen in one connected space. It eliminates the isolated galley kitchen problem that plagues thousands of period homes across East Sussex. Masters Group manages the entire process — structural engineering calculations, building control applications, RSJ installation, kitchen design, plumbing, electrics, plastering, tiling, and decoration. You deal with one team from start to finish. ### Related Services - [Foundations](/services/foundations) - [RSJ / Steel Beam Installation](/services/rsj-steel-beam) - [Rendering & Plastering](/services/rendering-plastering) - [New Builds](/services/new-builds) ### Areas We Serve - [Brighton](/areas/brighton) - [Worthing](/areas/worthing) - [Eastbourne](/areas/eastbourne) - [Haywards Heath](/areas/haywards-heath) ## What Happens When Kitchen-Diner Conversions Go Wrong? The most common failure in kitchen-diner conversions is inadequate structural support. Removing a load-bearing wall without proper engineering calculations and correct RSJ sizing can cause cracking, movement, and in severe cases, partial collapse of the floor above. This is not a theoretical risk — it happens regularly when unqualified contractors attempt structural work. Poor sequencing creates expensive problems. Installing a kitchen before plastering is complete means dust contamination. Fitting worktops before plumbing is tested risks water damage. Decorating before second-fix electrics means holes in fresh paintwork. Without coordinated trade management, these conflicts are inevitable. Building regulation failures create legal and financial liability. Any structural alteration requires building control sign-off. Without it, you cannot prove the work is safe, your home insurance may be void, and you will face problems when selling the property. Remediation of non-compliant structural work typically costs £5,000–£15,000. Masters Group has rescued multiple kitchen-diner projects started by other contractors. The cost of fixing inadequate RSJ installations, poorly routed plumbing, and substandard plastering consistently exceeds what the work would have cost if done correctly the first time. Our Process ## How We Deliver Every Project 1 ### Site Survey & Consultation We assess your property, identify load-bearing walls, discuss layout options, and understand your vision. Free, no obligation. 2 ### Structural Engineering Our structural engineers calculate beam sizes, bearing points, and temporary support requirements. Full structural drawings produced. 3 ### Building Control Application We submit all necessary applications and manage the approval process with LABC on your behalf. 4 ### Structural Work & RSJ Installation Controlled wall removal with temporary propping, steel beam installation, and making good all bearing points. 5 ### Kitchen Fit-Out Plumbing, electrics, plastering, kitchen unit installation, worktops, tiling, flooring, and decoration — all coordinated precisely. 6 ### Handover & Sign-Off Building control final inspection, snagging, and handover. Complete documentation including structural certificates. ## Why This Matters for Your Project ### Structural Certainty Every RSJ is designed by qualified structural engineers with full calculations — no guesswork, no risk to your home's integrity. ### Open-Plan Living Eliminate the isolated kitchen and create a connected family space that transforms daily living. ### Increased Property Value A well-executed kitchen-diner in Brighton typically adds 5–10% to property value — often £15,000–£40,000 on a standard terrace. ### Building Control Compliance Full LABC sign-off on all structural work — protecting your insurance and providing certified documentation for future sale. ### One Team, One Timeline Structural engineers, builders, plumbers, electricians, plasterers, and kitchen fitters — all coordinated under one project manager. ### Fixed-Price Delivery Your quote covers everything agreed. No hidden extras, no scope creep, no surprise invoices. Project Gallery ## Recent Design & Build Kitchen Diners Projects ![Open-plan kitchen diner with island unit and pendant lighting by Masters Group](/assets/kitchen-diner-1-B_IAnGL5.webp) ![Modern handleless kitchen with quartz worktops in Brighton home](/assets/kitchen-diner-2-CPLEEjQp.webp) ![Kitchen diner conversion with bi-fold doors opening to garden](/assets/kitchen-diner-3-DTyNrS0K.webp) ![Contemporary grey kitchen with quartz worktops and exposed brick feature](/assets/new-build-24-Qi37tJcl.webp) ![Kitchen diner with skylight flooding the space with natural light](/assets/kitchen-diner-4-BCEnJuzM.webp) ![Completed kitchen-diner conversion with underfloor heating in Sussex](/assets/kitchen-diner-5-KNLBNlAq.webp) ## Kitchen-Diner Conversions: Materials, Methods & Specifications The structural heart of any kitchen-diner conversion is the steel beam. In Brighton's Victorian terraces, this typically involves a universal beam (UB) spanning 3–5 metres, sized according to the load it must carry. Common specifications range from 152x89 UB to 254x146 UB depending on span, floor loading, and whether the wall supports one or two storeys above. Bearing points — where the beam sits on the remaining wall structure — are critical. These require concrete padstones or steel bearing plates to distribute the concentrated load. In older properties with soft lime mortar, additional foundation support may be needed beneath bearing points. Temporary propping during wall removal follows a strict sequence: Acrow props and strongboy supports are installed to carry the load above while the wall is removed and the beam is lifted into position. This is not a job for improvisation — incorrect propping has caused ceiling collapses in Brighton properties. Kitchen specification typically includes handleless or shaker-style cabinetry, composite or quartz worktops (Silestone, Caesarstone, or Dekton), integrated appliances, and underfloor heating. Plumbing is rerouted to accommodate island units where specified. Electrical work includes dedicated circuits for ovens, hobs, and extraction, plus LED downlighting throughout. Flooring options range from large-format porcelain tiles (popular for their durability and seamless appearance) to engineered timber. The choice affects build-up height and must be coordinated with underfloor heating installation and threshold levels to adjacent rooms. A typical kitchen-diner conversion in a Brighton Victorian terrace costs between £30,000 and £65,000 depending on kitchen specification, structural complexity, and scope of associated works. This includes structural engineering, building control fees, all trades, materials, and kitchen units. ## Frequently Asked Questions ### How much does a kitchen-diner conversion cost in Brighton? ### Do I need planning permission for a kitchen-diner conversion? ### How long does a kitchen-diner conversion take? ### Is my wall load-bearing? ### Do you handle building control? ### Can you install an island unit in my new kitchen-diner? ### What areas do you cover? ### What guarantee do you provide? ![Professional construction project — Masters Group building contractors](/assets/cta-bg-CbvIn_eS.jpg) ## Ready to Create Your Dream Kitchen-Diner? Get a free, no-obligation estimate. One team, one timeline, one fixed price — from structural design to final worktop polish. [Request Free Estimate](/contact) [01273 110607](tel:01273110607) [Home](/) · [Contact](/contact) ![Checkatrade 5-star rated building contractors](/assets/checkatrade-RMX7Lkai.webp)![Federation of Master Builders member](/assets/fmb-fkL6zBWX.png)![NICEIC Approved Contractor for electrical work](/assets/niceic-ByVGzec0.png)![Gas Safe Register certified contractor](/assets/gas-safe-8KDBuy0S.png) ### Masters Group Brighton's trusted building contractors. Over 30 years of experience delivering exceptional construction projects across East Sussex. [01273 110607](tel:01273110607) [info@mastersgroup.uk](mailto:info@mastersgroup.uk) 17 Colebrook Road, Brighton, BN1 5JH ### Services - [Kitchen Diners](/services/kitchen-diners) - [New Builds](/services/new-builds) - [Extensions](/services/extensions) - [House Renovations](/services/house-renovations) - [Loft Conversions](/services/loft-conversions) - [Kitchen Renovations](/services/kitchen-renovations) - [Bathroom Renovations](/services/bathroom-renovations) - [Garage Conversions](/services/garage-conversions) - [Foundations](/services/foundations) - [RSJ / Steel Beam](/services/rsj-steel-beam) - [Rendering & Plastering](/services/rendering-plastering) - [Decking & Patios](/services/decking-patios) - [Retaining Walls](/services/retaining-walls) - [Commercial](/services/commercial) - [Waste & Demolition](/services/waste-demolition) - [Project Management](/services/project-management) ### Areas We Serve - [Builders in East Sussex](/areas/east-sussex) - [Builders in Brighton](/areas/brighton) - [Builders in Worthing](/areas/worthing) - [Builders in Eastbourne](/areas/eastbourne) - [Builders in Littlehampton](/areas/littlehampton) - [Builders in Bognor Regis](/areas/bognor-regis) - [Builders in Burgess Hill](/areas/burgess-hill) - [Builders in Haywards Heath](/areas/haywards-heath) - [Builders in Horsham](/areas/horsham) ### Quick Links - [About Us](/about) - [Our Work](/our-work) - [Warranty](/warranty) - [Reviews](/reviews) - [Blog](/blog) - [All Services](/services) - [Areas We Serve](/areas) - [Contact](/contact) © 2026 Masters Group. 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