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Rear view of brick terraced houses in London with slate roofs and chimney stacks along the shared roofline

Bromley, London

HMO conversion drawings in Bromley

Bromley puts the whole weight of HMO control on planning: every proposed HMO needs permission, and the council says plainly that licensing cannot be used to steer where HMOs go. Our HMO conversion drawings in Bromley start from £879 and are built to win the planning decision, which is the only one that matters.

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

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

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We use it to check conservation areas and constraints.
Pick the council that decides your application.
A few lines: what you want to build, and anything the council has already said.
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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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    Planning is the gate

    The council's landlord advice records its Article 4 direction as from 1 September 2022, and its news statement confirms that all proposed HMOs require planning permission. Without the direction, only large HMOs would have needed it.

    The council's statement on its powers is useful reading for an investor. It says it cannot use HMO licensing to control where HMOs are situated, and cannot refuse to license an HMO that meets the legal requirements. In effect, once planning is granted the licence is a standards check, not a second chance to say no.

    That makes the planning application the whole risk. We spend our effort there: the survey, the room schedule and the design statement.

    Upper floors of a large yellow-brick Victorian house in London with chimney pots

    Local figures for Bromley

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Bromley has an Article 4 direction removing permitted development rights for HMOs from 1 September 2022, and the council states that all proposed HMOs now require planning permission.from 1 September 2022—bromley.gov.uk, Council pages: HMO advice for landlords, and news item on council powers over HMOs, opening paragraph
    Bromley runs mandatory licensing only: a licence is needed where five or more tenants from two or more households share facilities, and lasts five years. The council says it cannot use HMO licensing to control where HMOs are situated or refuse to license an HMO that meets the legal requirements.mandatory licensing only, five-year licence—bromley.gov.uk, Council news item: Council powers to control HMOs is limited by legislation, article text
    Households living in a house68.6 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Green Belt share of the council area51 % of council area covered by green-belt polygons—planning.data.gov.uk
    Minor application decisions545 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications granted70.3 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Minor applications decided in time82.8 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Conservation areas47 named conservation areas published by the council—planning.data.gov.uk
    Article 4 directions108 Article 4 directions published by the council—planning.data.gov.uk
    Mayoral CIL charging band2 MCIL2 charging band (1-3)—london.gov.uk
    Borough CIL residential rate£120.12/m² (Residential development excluding residential development which delivers additional care and support services)rate for planning permissions granted in 2026 (permission year index 400, schedule base index 333)bromley.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 Bromley
    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

    Licensing in one line

    The council runs mandatory licensing only, five-year licence. A licence is needed where five or more tenants from two or more households share facilities, and the licence holder must be a fit and proper person. The council's separate fire authority also has powers over fire safety in HMOs.

    If your scheme reaches that size, our HMO licence application pack uses the planning drawings, and a layout designed to licensing-grade room sizes avoids rework.

    What persuades a Bromley officer

    A Bromley application is judged as a minor scheme against the family-home stock and the effect on the street. We show how many bedrooms are lost or gained, the parking and cycle storage, the refuse arrangements and the garden left, with measured plans of every floor as it is and as it will be let.

    Bromley has 68.6 per cent of households in houses, and Green Belt covers 51 per cent of the borough, so many sites are suburban houses on the edge of open land. For extra rooms, see rear extension drawings in Bromley and loft conversion drawings in Bromley.

    The council's record and heritage

    Bromley decided 545 minor applications in the latest published year, granted 70.3 per cent and decided 82.8 per cent in time.

    The borough has 47 conservation areas and publishes 108 Article 4 directions of all kinds, so check the street for a second direction on top of the HMO one.

    Levy and the alternatives

    The levy is £120.12/m² (Residential development excluding residential development which delivers additional care and support services), and the Mayoral levy is in band 2. A change of use with no new floor area may be outside it.

    For flats instead of rooms, see flat conversion drawings in Bromley. The overview is architectural drawings in Bromley; nearby, Croydon and Bexley have their own rules.

    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.
    Red-brick mansion blocks and shopfronts on a street corner
    Unit by unit
    Move up and down — the nearest units slide out.

    Questions

    Do all HMOs need planning permission in Bromley?

    Yes. The council records its Article 4 direction as from 1 September 2022 and states that all proposed HMOs require permission.

    Can Bromley refuse an HMO licence because of where it is?

    The council says it cannot use licensing to control location. Its scheme is mandatory licensing only, five-year licence.

    How many minor applications does Bromley decide in time?

    82.8 per cent of 545 decisions in the latest published year.

    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.