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01Surveys and design

How much does interior layout design cost in London?

Interior layout design for a London home costs from £515 inc survey with us, or £200 less if you supply measured drawings, as a fixed fee with no VAT to add. You get two layouts on plan, checked against space and headroom guidance, and a chosen layout issued clean.

From £515 inc survey (£315 if you supply measured drawings)

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

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    What the price covers

    A layout study answers a simple question: where should things go? From £515 inc survey we measure each room, draw the house as it stands, then draw two layouts: furniture at scale, doors swinging, circulation marked. You compare them on paper before anyone swings a hammer.

    We issue the layout you choose as a clean plan that your builder, kitchen fitter or engineer can use. It is not a planning application; if the layout needs permission or building control, we can take it on as a separate step.

    What the layout study includesSurvey of every room, by us; Two layouts, furniture at scale; Stairs, storage and bathrooms checked; Load-bearing walls noted; The chosen layout issued cleaniSurvey of every room, by usiiTwo layouts, furniture at scaleiiiStairs, storage and bathrooms checkedivLoad-bearing walls notedvThe chosen layout issued clean
    We revise the layout at no charge until it suits you.

    Space standards as a yardstick

    We test layouts against the government's nationally described space standard, which gives sensible numbers for a real home. A double or twin bedroom should be at least 11.5 square metres, a single 7.5, and a single bedroom at least 2.15 metres wide. One double bedroom should be 2.75 metres wide, and others at least 2.55.

    The standard is written for new homes, but it is a handy measure for alterations to old ones, and the study says plainly when a plan is tight.

    A second-floor plan laid out on a drawing board with a parallel rule, pens and a scale
    Furniture laid out to scale on a plan: the quickest way to learn that a bed fits and a wardrobe does not.Photograph: netan, CC BY 2.0

    Stairs, headroom and ceilings

    Loft rooms are where layouts meet rules. A stair normally needs 2.0 metres of headroom, but in a loft conversion 1.9 metres at the centre and 1.8 at the side is accepted where 2.0 cannot be reached. Floor under a ceiling lower than 1.5 metres does not count towards floor area, unless used only for storage.

    The standard asks for a ceiling height of at least 2.3 metres over three-quarters of a new home's area. That is a test for a new home; for an old house it shows you where you will feel the difference.

    Which walls you can move

    The notes on load-bearing walls are often the most valuable part. Taking out a wall costs different amounts depending on what it carries, and a steel beam and its calculation add cost. We mark the walls that look load-bearing so that you know which ideas are inexpensive.

    If the layout depends on removing a bearing wall, structural calculations start at £435. See our interior layout design page for samples of what we issue.

    A hand drawing a floor plan with a black pen on tracing paper
    A hand drawing a plan: the first layout is sketched, then tested against the survey and the rules.Photograph: homegets.com, CC BY 2.0

    Getting started

    Tell us what you want from the house: another bedroom, a bigger kitchen, a ground-floor bathroom. We confirm the fee and book the survey.

    From brief to chosen layoutTell us what you want; Fixed fee in writing; Every room measured; Two layouts drawn and compared; Chosen layout issued cleani

    Tell us what you want

    ii

    Fixed fee in writing

    iii

    Every room measured

    iv

    Two layouts drawn and compared

    v

    Chosen layout issued clean

    Revisions are free until you are happy.

    The figures, with sources

    1. 11.5 m²

      Smallest double or twin bedroom for two bed spaces in the nationally described space standard.

      Source: GOV.UK, Technical housing standards: nationally described space standard, checked 25 Oct 2026

    2. 7.5 m²

      Smallest single bedroom, which must also be 2.15 metres wide.

      Source: GOV.UK, Technical housing standards: nationally described space standard, checked 25 Oct 2026

    3. 2.75 m

      Width of one double bedroom in a home, the others needing 2.55 metres.

      Source: GOV.UK, Technical housing standards: nationally described space standard, checked 25 Oct 2026

    4. 2.3 m

      Ceiling height required over three-quarters of a home's floor area in the standard.

      Source: GOV.UK, Technical housing standards: nationally described space standard, checked 25 Oct 2026

    5. 1.5 m

      Floor under a ceiling lower than this is left out of floor area, unless used only for storage.

      Source: GOV.UK, Technical housing standards: nationally described space standard, checked 25 Oct 2026

    6. 1.9 m

      Stair headroom at the centre line allowed in a loft conversion where 2.0 m is out of reach.

      Source: Approved Document K, paragraph 1.13, checked 15 Oct 2026

    Questions

    Is this a planning application?

    No. It is a design study and a clean plan. If your layout needs permission or building control, we can take it on as a separate step.

    Do you choose furniture or finishes?

    We draw furniture at scale to test fit. We do not specify finishes or supply fittings.

    What if I like neither layout?

    Revisions are free until you are happy with the plan.

    Can I skip your survey?

    Yes, if you supply measured drawings, and the price falls by the survey fee. We check them on site.

    The fee for interior layout design

    Interior layout design

    from £515

    inc survey (£315 if you supply measured drawings). No VAT to add.

    Get a fixed quote from £515

    What you get

    • Every room measured by us, included in the fee
    • Two layouts on plan with furniture at scale
    • Stairs, storage and bathrooms tested for space
    • Notes on which walls carry load
    • Free revisions until you are happy
    Pencil resting on a dimensioned technical drawing beside a scale rule

    11.5 m²

    Smallest double or twin bedroom for two bed spaces in the nationally described space standard. Source: gov.uk

    Photograph: Sven Mieke

    02Guides

    More guides

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    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.

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    Interior Layout Design Cost in London: From £515