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01Harrow, London

Listed building consent drawings in Harrow

A listed house in Harrow is judged under a borough policy that weighs the heritage asset ahead of the plan's other policies, so the application rests on how clearly the drawings separate original fabric from change. We survey the house, mark what stays and draw each proposal against it. Listed building consent carries no council fee.

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    02The brief

    Harrow puts the heritage asset first

    The borough's Development Management Policies read, in short: conservation given priority. Conservation of a heritage asset is weighed ahead of the other policies in the same document, and the officer judges an alteration by its scale, fabric, setting and reversibility. A drawing set for a listed house here should therefore show how a change could be undone, for instance by drawing a new opening beside the original wall it would cut.

    The second rule matters to anyone hoping to rely on standard allowances. Where the Residential Design Guide conflicts with listed building considerations, the outcome is, in short, heritage prevails over SPD. The guide's usual allowances for extensions and alterations do not decide a listed house.

    Red-brick mansion blocks and shopfronts on a street corner
    Upper floors of a large yellow-brick Victorian house in London with chimney pots
    Photograph: Lorenc Memaga

    03The record

    Local figures for Harrow

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Heritage asset conservation gets priority over other DPD policies; impact judged on scale, fabric, setting, reversibilityconservation given priorityNo periodharrow.gov.uk, Harrow Development Management Policies Local Plan (adopted July 2013), Policy DM 7 Heritage Assets, parts A-B, pp.20-21
    Where SPD householder guidelines conflict with listed building considerations, the latter prevailheritage prevails over SPDNo periodharrow.gov.uk, Harrow Residential Design Guide SPD (adopted 15 December 2010), paras 6.3-6.4
    NPPF Aug 2026, policy HE5(1)Proposals affecting heritage assets need an assessment of significance (including setting) proportionate to the asset's importanceNo periodgov.uk
    NPPF Aug 2026, policy HE6(1)Substantial weight to the conservation of designated heritage assetsNo periodgov.uk
    Planning (Listed Buildings and Conservation Areas) Act 1990 s9(1), s9(4)Works without consent: up to 6 months' imprisonment or a fine on summary conviction; up to 2 years or a fine on indictmentNo periodlegislation.gov.uk
    Concessions: application types with no current fee - Listed Building Consent0 GBPNo periodribblevalley.gov.uk
    Listed building entries295 list entries (Historic England, within the LPA boundary)No periodplanning.data.gov.uk
    Grade I listed entries4 list entriesNo periodplanning.data.gov.uk
    Grade II* listed entries20 list entriesNo periodplanning.data.gov.uk
    Conservation areas31 named conservation areas published by the councilNo periodplanning.data.gov.uk
    Heritage at Risk entries22 Heritage at Risk Register entries within the LPA boundary (Historic England)No periodplanning.data.gov.uk
    Listed building consent decisions (PS2)29 listed building consent decisions (to alter or extend)2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Listed building consents granted (PS2)96.6 % granted2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk

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

    Harrow6 neighbouring councils
    Councils bordering Harrow

    04The streets

    Householder applications by street in Harrow

    Streets in Harrow with the most householder applications, and the share approved
    StreetApplicationsApproved
    Headstone Lane3179%
    Norman Crescent2878%
    Albury Drive2675%
    Suffolk Road2576%
    Howberry Road2496%
    Evelyn Drive2284%
    Moss Lane2263%
    Whitchurch Gardens2288%
    Cannonbury Avenue2190%
    Kings Road2153%
    Sylvia Avenue2195%
    Cannon Lane2084%
    Alicia Gardens1988%
    South View Road1961%
    Christchurch Avenue1860%

    Counts of householder applications by street; no individual applications are shown. Streets with fewer than five applications are left out.

    GLA Planning London Datahub, householder applications

    05The drawing

    The listed building consent routeA, What the council weighs: Proposals affecting heritage assets need an assessment of significance (including setting) proportionate to the asset's importance. B, The weight given to conservation: Substantial weight to the conservation of designated heritage assets. C, Harrow: consents decided: 29 listed building consent decisions (to alter or extend). D, Harrow: consents granted: 96.6 % granted. E, Works without consent: Works without consent: up to 6 months' imprisonment or a fine on summary conviction; up to 2 years or a fine on indictmentSurvey and significanceHeritage statementDrawings and scheduleCouncil decisionABCDE

    The listed building consent route

    How works to a listed building are consented, from the first survey to the decision.

    A What the council weighs
    Proposals affecting heritage assets need an assessment of significance (including setting) proportionate to the asset's importance
    B The weight given to conservation
    Substantial weight to the conservation of designated heritage assets
    C Harrow: consents decided
    29 listed building consent decisions (to alter or extend)
    D Harrow: consents granted
    96.6 % granted
    E Works without consent
    Works without consent: up to 6 months' imprisonment or a fine on summary conviction; up to 2 years or a fine on indictment
    The listed house in its terrace3D
    Scroll the page: the model turns with it.

    06The detail

    What there is to protect in the borough

    Historic England records 295 list entries within Harrow, including 4 at Grade I and 20 at Grade II*, with the large majority at Grade II. The council publishes 31 conservation areas. The borough also contains 9 scheduled monuments and 4 registered parks and gardens, so a listed house can stand in the setting of another designated asset.

    22 entries within the borough are on Historic England's Heritage at Risk Register. When we check a property we look for every layer that applies: the list entry, any conservation area, and any Article 4 direction on the council's own map.

    Decisions over the latest four quarters

    In the most recent four published quarters Harrow decided 29 applications for listed building consent to alter or extend, and 96.6% were granted. The sample is small and the figure describes past cases, so it says nothing certain about yours. The national fee table sets the council fee for the consent at £0.

    Doing works to a listed building without consent is an offence under the Planning (Listed Buildings and Conservation Areas) Act. Works without consent: up to 6 months' imprisonment or a fine on summary conviction; up to 2 years or a fine on indictment. We draw each application to be approved, and redraws are free until approval if officers ask for changes.

    Garden buildings in the grounds

    Garden buildings within the curtilage of a listed building are not permitted development. A studio, garden room or outbuilding beside a listed house therefore goes through an application rather than permitted development. We draw it with the main house on one surveyed datum, so the officer reads the two together.

    Applications that often run alongside

    A listed house with a tired roof may also raise a roof question, covered under mansard roof drawings in Harrow, and a lower floor is a separate matter again: see basement conversion drawings in Harrow. To compare with the next borough west, read listed building consent drawings in Hillingdon, or the general route for listed houses across London.

    Planning sheet for a single-storey rear extension: proposed ground floor plan and rear elevation, with the Property Architecture title block
    Sample drawing. Proposed plan and rear elevation from a planning application set, sheet 03 at 1:50.

    07The papers

    What the drawings rest on

    Pencil resting on a dimensioned technical drawing beside a scale ruleArchitectural design
    Photograph: Sven Mieke
    Building regulations section through a rear extension, with the roof, floor, wall and foundation build-ups labelled
    Sample drawing. Section A-A with the build-ups building control checks, sheet 07 at 1:50.

    08Correspondence

    Questions

    Do I need consent to replace original windows on a listed house in Harrow?

    Probably, where the windows contribute to the character of the building. Harrow tests an alteration by its scale, fabric, setting and reversibility, so we record each window type and its condition before proposing anything.

    Is there a council fee for listed building consent in Harrow?

    No: the national fee table puts it at £0. A planning application made at the same time pays its own fee. The drawing work is quoted at a fixed figure after the free constraints check.

    Does a high grant rate mean my application will succeed?

    No. 96.6% of 29 recent decisions is a record of earlier, often modest, applications. Each case turns on the significance of the particular house, which is why the drawing set starts with a survey.

    What happens if the officer asks for changes?

    We amend the drawings and the revised sheets go back through our independent check before resubmission. Redraws are free until approval.

    Rows of brick terraced houses and gardens on a residential street

    96.6%

    granted

    Listed building consents granted (PS2), Harrow, 2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026). Source: assets.publishing.service.gov.uk

    Photograph: Altaf Shah

    09Further reading

    Other services in Harrow

    Listed building consent drawings nearby

    10Sources

    Sources and dates

    Licences

    Kensington street lined with brick townhouses and lit streetlamps beneath an orange dusk sky

    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.

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    Listed building consent drawings in Harrow