FORTY-ONEARCHITECTUREPart of the Forty-One Group
CGI of a detached new-build house with timber-clad gable, full-height glazing and slate roof

Architectural design, from first sketch to technical drawings

Planning and building regulations drawings, planning advice and CGI for homeowners, developers and businesses across Kent and London.

New-build dwelling · External CGI
Domestic

Homes and extensions

Making more of the house you already have, with drawings that get through planning and work on site.

  • Extensions
  • Loft conversions
  • Garage conversions
  • Internal alterations
Residential development

New builds and multi-unit schemes

From a single plot to apartment blocks, we test what a site can take and carry the scheme through approval.

  • New dwellings
  • Backland plots
  • Flats
  • HMOs
Commercial

Commercial and change of use

Fit-outs, conversions and change of use applications for landlords, operators and investors.

  • Change of use
  • Office to residential
  • Retail and leisure units
Interactive 3D

Bring your house to life

Your scheme is drawn as a 3D model, so you can see it from every angle before anything goes to the council. This is a recent project of ours, a single-storey rear extension. Spin it round, switch to the proposed design and move the sun to see how the light changes through the day.

Recent projectRear extensionExisting house
    Drag to rotate
    Sketch to CGI

    From the first sketch to the finished image

    Drag across the picture to see the concept sketch turn into a photoreal CGI of the same house.

    Photoreal CGI of a chalet bungalow with a timber-clad, fully glazed front gable
    Pencil sketch of the same house
    SketchCGI
    Services

    One practice, every stage

    Most projects run through three stages. You can come to us at any of them, and the same person draws your project the whole way through.

    01

    Concept

    Understanding the site, the brief and what the planning context will allow before anything is fixed.

    • Existing drawings
    • Feasibility and design options
    • Massing studies and early CGI
    02

    Planning

    Drawings and supporting documents prepared and submitted to the council, then managed through to a decision.

    • Householder and full applications
    • Lawful development certificates
    • Prior approval and change of use
    • Discharge of conditions
    03

    Technical

    Building regulations drawings and construction details your builder can price from and build to.

    • Building regulations packages
    • Sections, details and specifications
    • Coordination with structural engineers
    Alongside

    Planning consultancy and guidance

    Advice on what is likely to be approved, pre-application strategy, permitted development checks and responses to refusals.

    Alongside

    CGI visualisation

    Photoreal internal and external renders that help clients, buyers and planning officers see the finished building.

    How it works

    From first call to building on site

    Every project starts with planning. If you need building regulations drawings as well, the technical stage follows straight on from the approved design, drawn by the same person.

    Stage 1

    Planning

    Getting the design right and getting it approved.

    1. 01

      Initial call and quote

      Tell us what you want to do. We'll talk through what's likely to need permission and send a clear fixed-fee quote.

      You getA written quote and scope
    2. 02

      Site visit and measured survey

      We come to the property, measure it and photograph it, so every drawing is based on what is actually there.

      You getAccurate existing drawings
    3. 03

      The brief in detail

      We go through how you live or how the building needs to work, your budget and must-haves, and the planning constraints on the site.

      You getAn agreed design brief
    4. 04

      Design and drawings

      We develop the proposal with you, refining layouts and elevations until you're happy. CGIs can be added to help you see it.

      You getProposed plans and elevations
    5. 05

      Application submitted

      We prepare the forms, location plans and supporting statements and submit everything to the council on your behalf.

      You getA validated application
    6. 06

      Through to a decision

      We deal with the case officer, answer queries and agree amendments. Householder applications usually take around eight weeks.

      You getA planning decision
    Stage 2 · if you need it

    Technical

    Turning the approved design into drawings a builder can price and build from.

    1. 07

      Building regulations drawings

      Sections, construction build-ups, junction details and specification notes added to the approved design.

      You getA full technical package
    2. 08

      Engineer coordination

      We work with a structural engineer on beams, foundations and any structural changes, and fold their design into the drawings.

      You getCoordinated structural details
    3. 09

      Building control and tender

      Drawings are submitted to building control, and you have a clear set to send to builders for like-for-like quotes.

      You getDrawings ready for site
    Concept to technical

    What you see, and how it gets built

    The same scheme shown two ways: the CGI that wins support, and the construction drawing behind it.

    CGI of a five-storey rendered apartment building on a street corner
    CGIApartment scheme · Street viewExternal
    Wall section drawing showing separating floor build-up, cavity wall and window positions
    DWGWall section · First floorTechnical
    Work

    Selected projects

    A selection of recent schemes. Tap a project to see more views.

    Drawings

    Drawn to be built

    Technical packages are drawn in-house, with construction build-ups, junction details and notes that satisfy building control and make sense on site.

    Ground floor plan of a five-bedroom house at 1:50
    Ground floor plan5 bed / 8 person · 1:50
    Wall section drawing
    Wall sectionSeparating floor build-up
    Window head and cill detail
    Window head and cillTile-hung cavity wall
    Separating wall and floor junction detail
    Separating wall junctionRobust Detail E-WM-20
    About

    Forty-One Architecture is an architectural design and planning practice based in Whitstable, part of the Forty-One Group. You deal directly with the person drawing your project, from the first visit to building control sign-off.

    Based
    Whitstable, Kent
    Working
    Across Kent and London
    Director
    Lewis Fitchie
    Team
    Structural engineers, ecologists and planning consultants brought in as each project needs
    Why Forty-One

    One point of contact

    You speak to the person drawing your project, not an account manager.

    Why Forty-One

    Concept to technical in-house

    No handover between a planning firm and a technical firm, so nothing gets lost.

    Why Forty-One

    Local planning knowledge

    Regular applications with councils across Kent and London, so we know what officers look for.

    Why Forty-One

    See it before it's built

    CGIs of the finished design, so there are no surprises for you or the planners.

    Client review to follow

    Checkatrade review

    Client review to follow

    MyBuilder review

    Client review to follow

    Google review
    FAQs

    Common questions

    Do I need planning permission?

    Not always. Many extensions and loft conversions can go ahead under permitted development, though conservation areas, listed buildings and flats have extra rules. We'll tell you on the free call which route your project is likely to need, and a lawful development certificate can confirm it formally.

    How long does a planning application take?

    Councils aim to decide householder and smaller applications within eight weeks of validation, and larger schemes within thirteen. Allow a couple of weeks before that for the survey and drawings.

    How much will it cost?

    Every project is priced individually after the free call, as a written quote with the scope set out clearly, so you know where you stand before anything starts.

    Do I need building regulations drawings as well?

    Most building work needs building regulations approval, which is separate from planning. Our technical drawings carry the approved design through to construction details your builder and building control can work from.

    Do you work with structural engineers?

    Yes. We bring in a structural engineer for beams, foundations and structural alterations, and coordinate their design into the drawings.

    My application was refused. Can you help?

    Yes. We'll review the decision notice and officer's report, then advise whether a revised scheme or an appeal is the better route.

    Which areas do you cover?

    We're based in Whitstable and work across Kent and London. If you're further afield, get in touch anyway.

    Free consultation

    Book a free 15-minute call

    A quick conversation about what you want to do. No cost and no obligation.

    • Whether you're likely to need planning permission
    • Which drawings your project needs
    • Rough timescales and next steps
    • A written quote afterwards if you'd like one
    How should we talk?
    Pick a day
    Available times

    Choose a time to continue.

    Preview: times shown are examples until the calendar is connected.
    Enquiries

    Tell us about your project

    Send a few details and we'll come back to you, usually within one working day.

    Email
    enquiries@forty-onecd.co.uk
    Mobile
    07404 611105
    Office
    Whitstable, Kent
    We only use your details to reply to you.
    WhatsApp