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A hand drawing a floor plan with a black pen on tracing paper
Photograph: homegets.com (CC BY 2.0)

01Surveys and design

How much does CAD conversion cost in London?

CAD conversion of your plans for a London house costs from £215 for up to four sheets with us, as a fixed fee with no VAT to add. We redraw paper, scan or PDF sheets in CAD at an identified scale and return a DWG and a PDF of each.

From £215

  • MCIAT chartered architectural technologists
  • £2m professional indemnity insurance
  • LABC Partnered
  • ICO registered

Our fee for cad conversion: from £215, no VAT to add. Covered in full, with its own guide and fee, at propertyarchitecture.co.uk.

By Property Architecture, chartered architectural technologists (MCIAT). Published . 3 min read.

Fixed fee, no VAT to add

Ask for a fixed fee

Photographs or current plans (optional)

Drag files here or browse your device

Up to 10 files, 90 MB in total: PDF, JPG, PNG or DWG

    Write to us before 3pm and we reply the same working day. Redraws are free until approval.

    What the fee buys

    Old plans arrive as a scan of a drawing board sheet, a phone photo or a PDF printed from somebody else's software. None of these can be edited, and none can safely be measured. For £215 we redraw up to four sheets in CAD so that an engineer, a builder or a planning officer can work from clean lines.

    Layers and line weights are set up so the file can be reused, and each sheet is drawn to scale. Where something on the old plan looks wrong or does not match the building, we mark it for you rather than silently copy it.

    What comes backUp to four sheets redrawn in CAD; Each sheet to an identified scale; North point and scale bar added; A DWG file and a PDF of each sheet; A note of anything that looks wrongiUp to four sheets redrawn in CADiiEach sheet to an identified scaleiiiNorth point and scale bar addedivA DWG file and a PDF of each sheetvA note of anything that looks wrong
    Four sheets are covered by the fee; extra sheets are priced before we start.

    Why scale and north matter

    Government guidance says that any plans or drawings must be drawn to an identified scale, and plans must show the direction of north. A scale bar is not a legal requirement, but it stays correct when a PDF is resized, which is why we add one.

    A location plan is normally at 1:1250 or 1:2500, scaled where possible to fit A4 or A3 paper. If you need a new location or block plan rather than a redraw of an old one, the price is on our location and block plans line.

    A second-floor plan laid out on a drawing board with a parallel rule, pens and a scale
    A plan on a drawing board with a parallel rule and a scale: the scale is a property of the sheet, which is what a CAD file preserves.Photograph: netan, CC BY 2.0

    When a redraw is the right tool

    It is the quick choice when the building has not changed and you need a usable file: for a planning application based on existing plans, for a structural engineer, or to give a builder a set that can be marked up. Applicants are also encouraged to apply electronically, and electronic applications do not need extra paper copies.

    It is not the right tool when the old plans may be wrong. A redraw is only as accurate as the sheet it copies. If the house has been altered, or the plans are decades old, a measured survey is the sound base, and it adds £200 to the bill.

    Choosing between redraw and survey

    We tell you which you need. A redraw is cheaper and quicker; a survey records the building as it is. Where a council wants existing and proposed drawings that agree with the house, we advise the survey.

    See our CAD conversion page for what comes back, or our floor plans for newly drawn sheets.

    A bright white kitchen with a rooflight above and glazed doors to the garden
    A kitchen extension: a builder pricing work like this wants a plan that scales correctly, not a photographed sketch.Photograph: eosrooflights, CC BY 2.0

    Sending your plans

    Send scans or photos of each sheet, however poor. We confirm the number of sheets and the fee, then redraw.

    From paper to CADSend the sheets as scans or photos; Fixed fee for up to four; Sheets redrawn at scale; Anything doubtful flagged; DWG and PDF deliveredi

    Send the sheets as scans or photos

    ii

    Fixed fee for up to four

    iii

    Sheets redrawn at scale

    iv

    Anything doubtful flagged

    v

    DWG and PDF delivered

    If the plans look unreliable we tell you before redrawing.

    The figures, with sources

    1. Scale and north

      Drawings must be to an identified scale, and plans must show the direction of north.

      Source: Planning Practice Guidance, Making an application, checked 25 Oct 2026

    2. Scale bar

      A linear scale bar is not required by law but helps, particularly on electronic submissions.

      Source: Planning Practice Guidance, Making an application, checked 25 Oct 2026

    3. 1:1250

      Usual scale for a location plan, alongside 1:2500, fitted where possible to A4 or A3.

      Source: Planning Practice Guidance, Making an application, checked 25 Oct 2026

    4. Electronic

      Applicants are encouraged to apply online, and online applications need no extra paper copies.

      Source: Planning Practice Guidance, Making an application, checked 25 Oct 2026

    5. No refusal

      A council cannot refuse to validate an application over missing paper or electronic copies.

      Source: Planning Practice Guidance, Making an application, checked 25 Oct 2026

    Questions

    Can you work from a photo of a sheet?

    Yes, if it is clear enough to read the dimensions. We tell you if it is not.

    Will the drawings be accurate to the building?

    They will match the old plan. If the building has changed, a measured survey is the way to be sure.

    What if I have more than four sheets?

    We quote the extra sheets in the same way, before we start.

    Which file formats do I get?

    A DWG for editing and a PDF for printing or sending, for every sheet.

    The fee for cad conversion

    CAD conversion

    from £215

    The total you pay. No VAT to add.

    Get a fixed quote from £215

    What you get

    • Up to four old sheets redrawn in CAD
    • A fixed scale, north point and scale bar on each
    • Layers and line weights set for reuse
    • DWG and PDF files of every sheet
    • A flag on anything that does not add up
    Pencil resting on a dimensioned technical drawing beside a scale rule

    Scale and north

    Drawings must be to an identified scale, and plans must show the direction of north. Source: gov.uk

    Photograph: Sven Mieke

    02Guides

    More guides

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    Send us the address of your house.

    We look up the conservation area, listing and Article 4 position, then reply with a fixed fee. A message before 3pm is answered the same working day.

    Ask for a fixed feeCall 020 7131 9703WhatsApp
    CAD Conversion Cost in London: From £215