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Barnet, London

Planning consultant in Barnet

Barnet has 15 Article 4 directions and refused far more larger-extension prior approvals than it granted, so a planning consultant earns the fee by choosing the route before any drawing is paid for. We advise Barnet homeowners on the right application, write the statement and liaise with officers, on a fixed quote after a free constraints check.

Fixed quote after a free constraints check

  • MCIAT chartered
  • £2m PI insured
  • LABC Partnered
  • Fixed fees, VAT included

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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 planning consultant

    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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    Pencil resting on a dimensioned technical drawing beside a scale rule

    Planning consultant in Barnet: how the guidance and the figures steer the route

    Barnet's guidance for home extensions is Sustainable Design and Development Guidance SPD, Part 4: Guidance on residential extensions and alterations, supported by Sustainable Design and Development Guidance SPD, Part 2: The seven features of good design, under the Barnet Local Plan 2021-2036. A consultant reads the scheme against those two documents before choosing a route, because officers measure a rear extension, a roof alteration or a side addition against them line by line.

    The prior approval record shows why the choice matters. In the year to March the council decided 18 larger home extension prior approvals in favour and refused 103. It also processed 785 lawful development certificate applications, which tells you how many owners test permitted development first.

    Those two numbers pull in opposite directions. A lawful development certificate settles whether a scheme is permitted development, and it fits a modest extension within the limits. The larger home extension route involves neighbour consultation and a council view on impact, and the refusals suggest officers use it. We tell you which side of the line your plans fall on after reading the survey, the house type and the neighbours' windows.

    If the answer is a full householder application, the statement is written around the council's design principles, and the sheets are drawn to match the text. See our lawful development certificate guide for the evidence that route needs.

    Rows of brick terraced houses and gardens on a residential street

    Local figures for Barnet

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Article 4 directions15 Article 4 directions published by the council—planning.data.gov.uk
    Article 4 direction areas48 Article 4 direction area polygons published by the council—planning.data.gov.uk
    Conservation areas16 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries651 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Tree preservation orders718 tree preservation orders published by the council—planning.data.gov.uk
    Householder decisions1,361 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted80.2 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Larger home extension prior approvals granted18 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Larger home extension prior approvals refused103 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Lawful development certificate applications (PS1)785 certificates2025 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.

    Councils bordering Barnet
    Which application your project needsLawful Development Certificate decision: 8 weeks. Prior approval decision: 42 days. Householder decision: 8 weeksYour projectWithin permitted development?Lawful Development CertificatePrior approvalHouseholder applicationYesLarger rear extensionNoABC

    Which application your project needs

    The usual route for a house; flats and listed buildings follow other rules.

    A · Lawful Development Certificate decision
    8 weeks
    B · Prior approval decision
    42 days
    C · Householder decision
    8 weeks

    Article 4 directions, listing and trees

    The borough publishes 15 Article 4 directions across 48 separate areas, and a house inside one can lose permitted development rights that a house down the road keeps. Alongside them sit 16 conservation areas, 651 listed entries and 718 tree preservation orders.

    That is a heavy constraints load for a suburban borough, and it is why the free check comes first. We map your address against each layer and report which rights remain, which applications would be needed and which consents sit outside planning, such as work to a protected tree.

    Where Green Belt is involved, about 28 per cent of the borough is covered by green-belt polygons, and the policy test is stricter.

    Householder and minor decisions in numbers

    The council made 1,361 householder decisions in the latest twelve months and granted 80.2 per cent, deciding 95.1 per cent within eight weeks or an agreed extension. Minor applications show 703 decisions and 67.4 per cent granted.

    Householder and minor applications are different kinds of scheme, and the minor category covers things such as conversions and new dwellings. If your project is a minor application, a consultant's case for the scheme matters more.

    None of these figures forecasts your decision. They show the volume the officers handle and the standard a good application meets.

    What you receive from us

    A short example shows the method. An owner of a semi-detached house wants a long rear extension. We measure the plot, read the guidance, look at the neighbours' windows and the direction map, and then give two or three options in order of risk, with the route, the likely documents and the time each would take. The owner chooses, and only then do drawings begin.

    You get a written recommendation on the route, a validation checklist against the local list, a planning statement and officer liaison after submission. The statement and our planning drawings are prepared together.

    Officer liaison continues after submission. We answer consultee comments, negotiate amendments and keep you informed in plain language, so a request for more information does not turn into a lost month.

    We also tell you when a project does not need a consultant. A simple extension inside every limit needs drawings and a certificate, not a statement.

    Fee, deadline and quote

    The determination period for a non-major application is 8 weeks, and a householder fee of £548 is payable to the council on top of our fee.

    Barnet work is quoted case by case: the free constraints check comes first and a fixed figure follows, so you know the cost of the advice before committing. Every statement and drawing is read by a second chartered technologist before submission, and amendments an officer requests are redrawn at no charge until approval. Start with the national guide at planning consultant or the borough page, architectural drawings in Barnet.

    What you receive

    Planning drawing sheet for a rear extension with plans, elevations and sections
    Sample drawing. Planning drawings for a rear extension: plans, elevations and sections on one sheet set.
    Georgian brick terrace with sash windows, arched fanlight doorways, stone steps and iron railings in London
    The street around you
    Move across the plinth — the blocks rise around the pointer.

    Questions

    Should I use prior approval or a householder application in Barnet?

    Look at the record: 18 larger home extension prior approvals were granted and 103 refused in the year to March. A consultant will compare your plans with both routes.

    How do I know if my Barnet house is under an Article 4 direction?

    The council publishes 15 directions covering 48 areas. Our free check maps your address against all of them.

    How many householder applications does Barnet decide?

    1,361 in the latest twelve months, with 80.2 per cent granted. That describes the borough, not any single case.

    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.