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    LINX design visual of a single-storey barn-style home with a glazed gable

    Architectural Design

    Architectural Design in London & the South East

    Concept and feasibility studies, measured surveys, planning and building regulations drawings, structural calculations, M&E and drainage designs — by in-house architects who work alongside the builders.

    Pictured: LINX design visual

    Real Projects

    Watch Real Projects Come Together

    See the work behind the finish — on-site, walkthroughs and start to handover.

    4.9★ from 500+ reviews on Google, Houzz, Reviews.io & TrustATrader

    South Croxted Road · SE21Infill kitchen extension — from the air and on site
    Vitali Close · SW15Rear Extension — Vitali Close
    Wallington, Surrey · SM6Rear extension & full renovation
    Sunbury · BuildOn-site with the homeowner
    Colwith Road · BuildInside the build
    Woodend Road · E17Woodend Road — Extension complete
    Loft ConversionEdward — Loft conversion
    Real projectOn-site with LINX
    Real projectKitchen extension & porch — completed project
    Real projectRear extension & bathroom — completed project
    East HorsleyHome ExtensionView
    Arlington SquareFull RenovationView
    SudbourneLoft ConversionView
    Architectural walk-throughView

    Client Stories

    Hear From Our Clients

    Real projects, real results — straight from the people we've worked with.

    South Croxted Road · SE21Infill kitchen extension walkthrough
    Sunbury · CompleteFinished extension walkthrough
    Colwith Road · HammersmithRear extension & renovation

    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.

    Design & build under one roof

    Drawn by the Team That Builds It

    LINX Design and Build prepares the drawings a project needs before building starts — concept and feasibility studies, measured surveys, planning and building regulations drawings, structural calculations, M&E and drainage designs — for extensions, loft conversions, renovations and new builds across London and the South East.

    Design, planning and construction sit under one roof, so a scheme we draw is one we can build — and the drawings carry straight through to a fixed-price quote and the build.

    • In-house architects and structural coordination
    • Planning and Building Control submissions managed for you
    • Fixed-fee Architect Packages
    • Free feasibility check before you commit
    LINX design visual: aerial view of a contemporary retreat with a pool
    LINX design visual

    Recent design work

    From LINX's Drawing Board

    Design visuals from LINX schemes — how a proposal is shown to clients and planners before anything is built.

    • LINX design visual of a residential scheme of detached houses

      Residential scheme

      LINX design visual

    • LINX design visual of a group of new houses with dark cladding

      New homes

      LINX design visual

    • LINX design visual of a brick rear extension with steel-framed glazing

      Rear extension

      LINX design visual

    FAQs

    Common questions

    Ask us something else

    It depends on the project and the property. Many extensions and loft conversions fall under Permitted Development; others need a full planning application. Try our free Permitted Development Checker, or ask us — we'll tell you which route applies before any drawing starts.

    Start your design

    Ready to Draw Up Your Project?

    Tell us what you'd like to build. We'll advise on planning, prepare the drawings and, if you wish, build it.