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    Kitchen extension with roof lights and a glazed rear wall, designed and built by LINX

    LINX division · The core brand

    LINX Design & Build

    The core LINX brand: design, planning and construction under one roof. One in-house team takes homes, developments and public buildings from the first drawing to handover across London and the South East.

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    The division

    Design, planning and construction under one roof

    LINX Design & Build is where the group began. Founded in London in 2017, it has grown into a team with more than 30 years of combined experience, delivering extensions, loft conversions, renovations and new builds for homeowners, landlords, developers and public sector clients.

    Every project runs through one team. Our in-house architects prepare the drawings and take them through planning and building regulations, and the same company builds what was drawn — with 60+ tradespeople employed directly rather than a chain of subcontractors.

    That is what makes the price dependable: a fixed figure in writing, a JCT contract, a dedicated project manager and site foreman, and a 10-year structural guarantee when the work is done.

    Kitchen extension finished with three roof lights, by LINX
    Period living room renovated by LINX Design & Build

    Services

    What We Offer

    LINX Design & Build works for private clients and the public sector alike, with the same team, the same standards and a fixed price in writing.

    For private clients

    Premium residential construction services delivering luxury new builds, extensions, and complete refurbishments with exceptional quality and craftsmanship.

    • Luxury residential new builds and extensions
    • Full house and commercial refurbishments
    • Loft conversions and high-end home improvements
    • Design & Build turnkey projects for private clients and developers
    • Cosmetic and full property renovations (£25K–£50K+)
    • Structural works, basements, and architectural builds
    • Smart home, AV, and automation integration

    For the public sector

    Comprehensive construction and refurbishment services for public sector projects including schools, community centres, and public housing.

    We provide comprehensive design & build services tailored to meet the unique needs of the public sector, ensuring compliance, quality, and value for communities.

    • School and college refurbishments & extensions
    • New-build community centres, offices, and council buildings
    • Public housing and social housing refurbishments
    • Design & Build contracts for education, health, and local authority projects
    • Fire safety, compliance, and remedial works
    • Disabled adaptations and DDA compliance projects
    • Planned and reactive maintenance frameworks
    • Emergency works and out-of-hours response
    • Council building upgrades and energy-efficient retrofits

    Typical projects

    What the division builds

    01

    Extensions and kitchens

    Rear, side-return and wraparound extensions, many finished with roof lights and full-width glazing. Home extensions start from £60,000.

    02

    Loft conversions

    Dormer, hip-to-gable and mansard lofts that add bedrooms and bathrooms without giving up the garden, from £55,000.

    03

    Renovations and new builds

    Whole-house renovations from £40,000 and new build homes from £160,000, from the first sketch to Building Control sign-off.

    How LINX delivers

    Why Choose Linx

    Our commitment to excellence on every project, from a single home to a public building.

    Expert Team

    Skilled professionals with extensive experience and compliance knowledge, for private and public sector clients.

    Quality Assured

    Rigorous quality control processes ensuring the highest standards in every project.

    On Time, On Budget

    Proven track record of delivering projects within timescales and budgets.

    • One accountable team: in-house architects, project managers and trades
    • A detailed quotation, fixed in writing — the quoted figure is the figure
    • A JCT contract, a payment plan and a construction programme
    • A dedicated project manager and site foreman on every project
    • Daily progress updates and weekly client reports
    • Completion certificates, warranties and a 10-year structural guarantee

    How your project works

    Six clear stages, from first enquiry to completion — whether we design and build, or build from your drawings.

    For clients who need the whole project managed: design, planning, building regulations and construction, from initial enquiry through to completion.

    1. Step 1: Initial Consultation & Feasibility

      Timeline: 1–3 days

      Initial consultation to discuss requirements, ideas and budget.

    2. Step 2: Architectural Design & Drawings

      Timeline: 1–4 weeks

      Architectural drawings and proposed layouts.

    3. Step 3: Planning Permission

      Timeline: 6–12 weeks (estimated)

      Planning application preparation and submission.

    4. Step 4: Structural Engineering & Building Regulations

      Timeline: 1–3 weeks, depending on complexity

      Structural calculations and drawings.

    5. Step 5: Contract & Building Works

      Timeline: Typically 4–20+ weeks, depending on project type

      Begin construction and manage all building works.

    6. Step 6: Completion & Handover

      Final client walkthrough and handover.

    All timelines are indicative. Your project-specific schedule is confirmed before construction.

    See how it works

    Questions

    LINX Design & Build: your questions answered

    What does design and build mean at LINX?

    One company is responsible for the whole project: survey, architectural drawings, planning, structural engineering and building regulations, then the build and the handover. You have one contract and one point of contact instead of managing an architect and a builder separately.

    Can you build from drawings we already have?

    Yes. Our Build Only service starts from your architectural and structural drawings. We survey the site, review the drawings and send a detailed construction quotation, normally within 1–5 working days once we have enough information.

    Is the price fixed?

    Yes. You receive a fixed-price quotation in writing before work starts, with no provisional sums that move once the build begins. Every contract carries our 10-year structural guarantee.

    Where do you work?

    Across London and the South East, including Surrey, Kent, Berkshire and Essex. The first consultation is free, wherever the project is.

    Free consultation

    Ready to talk about your project?

    Tell us what you are planning. We will come back within 24 hours with the right person, not a generic reply.