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Ealing, London

HMO conversion drawings in Ealing

Ealing publishes its HMO room sizes and its overconcentration test in plain terms, which makes a good drawing easy to aim at. Our HMO conversion drawings in Ealing start from £879 and are drawn to those published standards from the first sketch.

From £679 drawings + £200 survey (£879 total), no VAT to add

  • MCIAT chartered
  • £2m PI insured
  • LABC Partnered
  • Fixed fees, no VAT to add

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We use it to check conservation areas and constraints.
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    Architectural model of a four-storey London stucco townhouse in its terrace, with a portico, area railings, sash windows, a cornice and chimney stacks
    The house as it stands: four storeys over a lower ground floor.Existing Proposed worksAn illustrative model, built for this page.

    How we work on hmo conversion drawings

    Seven steps from first call to approval.

    The same model cut through the middle: every floor, the stair, the chimney breasts, the new mansard, rear extension and basement in section
    Section through the model: every floor on one datum.

    1. Enquiry and constraints check

      We check the property against conservation areas, listed status, Article 4 directions, tree preservation orders, flood zone and planning history. We choose the right route and send a fixed quote.

    2. Measured survey

      We survey the house on one datum: rooms, levels, boundaries, drains, trees and the neighbours' windows that the 45° and 25° tests depend on.

    3. Design options

      We model the house in Revit and show you options in 3D and plan, with the planning strategy and the precedents in your street.

    4. Design frozen

      You choose an option in writing. Nothing changes after this without your say.

    5. Independent check

      A second chartered technologist checks every sheet against the council's validation checklist and the policy. A senior review signs it off before anything is submitted.

    6. Submission

      We prepare the forms, certificates, fee and documents and submit through the Planning Portal.

    7. Officer liaison

      We answer the planning officer and make any amendments within five working days, at no charge until approval.

    Free redraws until approval. Every drawing set is checked independently, and the checker is never the person who drew it.

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    Perivale first, then the rest of the borough

    Ealing used two Article 4 directions to remove the right to change a dwelling to a small HMO. The immediate one covered Perivale ward alone. The second covered the remaining borough, apart from Perivale and the OPDC area, and the council states its reach as borough-wide from 14 November 2025.

    For a landlord the date matters in one respect. A shared house that was lawfully set up before the relevant date is on a different footing from one proposed now, so we collect evidence of when the use began if you are buying an existing HMO.

    The directions let the council look at each case on its merits. That is not a ban, and well-evidenced schemes are granted.

    Pencil resting on a dimensioned technical drawing beside a scale rule

    Local figures for Ealing

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Two Article 4 directions require planning permission to change a dwelling (C3) to a small HMO (C4): an immediate direction in Perivale ward from 30 October 2024, and a non-immediate direction for the rest of the borough (except Perivale and the OPDC area) from 14 November 2025.borough-wide from 14 November 2025—ealing.gov.uk, Council page: Article 4 Directions to remove HMO permitted development rights, immediate and non-immediate directions
    Ealing expects HMO bedrooms of at least 7.5 m2 (single) and 11.5 m2 (double), and a combined living, dining and kitchen area of 25 m2 for three occupants, 27 for four, 29 for five and 31 for six, plus 2 m2 for each extra person.7.5 m2 single; 11.5 m2 double—ealing.gov.uk, Council page: How we assess HMO proposals, space standards
    Applicants should show that a proposal avoids cumulative or overconcentration impacts that harm local character or neighbour amenity; where several HMOs are nearby, the application should explain how a good local housing balance is kept. No numeric threshold is given on the page.qualitative overconcentration test—ealing.gov.uk, Council page: How we assess HMO proposals, overconcentration paragraph
    An additional licensing scheme has applied since 1 April 2022 to HMOs occupied by three or four unrelated individuals; mandatory licensing applies at five or more persons not living as a single household.since 1 April 2022—ealing.gov.uk, Council page: Types of property licences, additional licensing
    Households living in a house50.3 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Minor application decisions821 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications granted80 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications decided in time94.2 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Conservation areas31 named conservation areas published by the council—planning.data.gov.uk
    Borough CIL residential rate£300/m² (Central Ealing); £150/m² (Rest of LPA). Mayoral CIL (MCIL2) £60/m² indexed additionally.schedule rate (approved 16 December 2025, effective 1 March 2026; schedule states RICS CIL Index value for 2026: 400 at adoption)ealing.gov.uk

    A blank value means the figure has not been published, not that there are none. Check your own address with the council.

    Councils bordering Ealing
    Building regulations, layer by layerPart A: structure: Approved Document A: Structure, 2004 edition incorporating 2004, 2010 and 2013 amendments. Part B: fire safety: All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604. Part L: insulation: New elements in existing dwellings, limiting U-values W/(m²·K): roof 0.15, wall 0.18, floor 0.18, windows 1.4 (or WER Band B), doors 1.4. Part K: stairs: 2.0 m clear headroom over stairs. Full plans application: Building control body must decide a full plans application within 5 weeks, or longer if agreed in writingPart A: structurePart B: fire safetyPart L: insulationPart K: stairsFull plans applicationABCDE

    Building regulations, layer by layer

    The Approved Documents that shape most house projects, from structure to the application itself.

    A · Part A: structure
    Approved Document A: Structure, 2004 edition incorporating 2004, 2010 and 2013 amendments
    B · Part B: fire safety
    All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604
    C · Part L: insulation
    New elements in existing dwellings, limiting U-values W/(m²·K): roof 0.15, wall 0.18, floor 0.18, windows 1.4 (or WER Band B), doors 1.4
    D · Part K: stairs
    2.0 m clear headroom over stairs
    E · Full plans application
    Building control body must decide a full plans application within 5 weeks, or longer if agreed in writing

    The sizes Ealing asks for

    The council's guidance on how it assesses HMOs gives numbers an applicant can design to. Bedrooms are expected at 7.5 m2 single; 11.5 m2 double, and the shared living, dining and kitchen space the council expects grows with each occupant.

    We lay the plan out against those figures before anything else, so that an extra bedroom does not quietly take the shared space under the standard. A scheme that gains a room and loses the lounge is a common reason for a request for changes.

    The same sheets serve the licence. The additional scheme has applied since 1 April 2022 to shared houses of three or four unrelated people, and the mandatory scheme starts at five.

    Answering the overconcentration question

    Ealing does not set a percentage. The page asks that a proposal avoids cumulative or overconcentration impacts that harm local character or neighbour amenity, and the council's wording is a qualitative overconcentration test. Where several HMOs are already close, the application should explain how a good local housing balance is kept.

    Because there is no formula, evidence carries the case. We map the known HMOs nearby from the council's register and licence records, show the count on the first page of the design statement, and describe the garden, bin and cycle provision so the neighbour-amenity point is answered in the drawings.

    Houses and flats behave differently here. Ealing has 50.3 per cent of households in houses, so a large share of HMO candidates are family houses, which is the stock the test is written for.

    How Ealing decides

    A shared house goes through as a minor application. Ealing decided 821 minor applications in the latest published year, granted 80 per cent and decided 94.2 per cent in time.

    The borough has 31 conservation areas. If you also plan to add rooms at the back, see rear extension drawings in Ealing, and for the roof loft conversion drawings in Ealing.

    Levy and your options

    The charging schedule reads: £300/m² (Central Ealing); £150/m² (Rest of LPA). Mayoral CIL (MCIL2) £60/m² indexed additionally.. A change of use with no new floor area may fall outside it, but a new extension can bring it in, so the next-steps note flags the point.

    Compare self-contained flats with flat conversion drawings in Ealing, and see neighbouring Brent and Hillingdon for their own rules. The licence side is covered by our HMO licence application pack.

    What you receive

    Building regulations section drawing showing the construction build-up
    Sample drawing. Building regulations section showing construction build-up for a building control check.
    Rear view of brick terraced houses in London with slate roofs and chimney stacks along the shared roofline
    Unit by unit
    Move up and down — the nearest units slide out.

    Other services in Ealing

    HMO conversion drawings nearby

    Questions

    Does the whole of Ealing need planning permission for a small HMO?

    Almost all of it. The council states the reach as borough-wide from 14 November 2025, with Perivale covered earlier and the OPDC area excluded.

    What bedroom sizes does Ealing expect in an HMO?

    7.5 m2 single; 11.5 m2 double, with shared living, dining and kitchen space that increases with the number of occupants.

    Does Ealing set a limit on how many HMOs are in one street?

    No figure is published on the council's page; it describes a qualitative overconcentration test.

    Sources and dates

    City of London skyline glowing at dusk across the Thames under a dramatic orange sky

    Tell us about your property.

    We check the constraints, then send a fixed fee. Messages before 3pm get a reply the same working day.

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