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Broxbourne, Hertfordshire

Architectural drawings in Broxbourne

Broxbourne has a new set of householder rules, the Residential Design and Amenity guidance, which replaced the earlier extensions guide last year, and green belt covers 55 per cent of the borough. Our MCIAT chartered architectural technologists prepare architectural drawings for Broxbourne homes from £745 including VAT, after a free check of your address.

Fixed quote after a free constraints check

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

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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 architectural 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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    Rows of brick terraced houses and gardens on a residential street

    Broxbourne in numbers

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Green Belt share of the council area55 % of council area covered by green-belt polygons—planning.data.gov.uk
    Conservation areas6 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries260 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Heritage at Risk entries4 Heritage at Risk Register entries within the LPA boundary (Historic England)—planning.data.gov.uk
    Householder decisions287 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted93.7 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time93 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Larger home extension prior approvals refused4 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Households living in a house73.7 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Owner-occupied households68.6 % of households owner-occupied (owned outright or with mortgage/loan)Census 2021nomisweb.co.uk
    Average price, detached899,382 GBP2026-07publicdata.landregistry.gov.uk
    Local planBroxbourne Local Plan 2018-2033—broxbourne.gov.uk
    Local plan adopted2,020—broxbourne.gov.uk
    Supplementary planning documentResidential Design and Amenity Supplementary Planning Guidance2025broxbourne.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 Broxbourne
    Constraints check: BroxbourneConservation areas: 6 named conservation areas published by the council. Listed building entries: 260 list entries (Historic England, within the LPA boundary)6Conservation areasA260Listed building entriesC

    Constraints check: Broxbourne

    What we check first on any Broxbourne address. Counts are for the whole council area.

    A · Conservation areas
    6 named conservation areas published by the council
    C · Listed building entries
    260 list entries (Historic England, within the LPA boundary)

    The Residential Design and Amenity guidance replaces the old extensions guide

    The council's current householder document is the Residential Design and Amenity Supplementary Planning Guidance, published in August last year. It replaces the earlier guidance on house extensions, conversions and driveways and covers extensions, roof alterations and loft conversions in a single text, so a rear extension and a loft are now judged by the same set of tests.

    Underneath sits the Broxbourne Local Plan 2018-2033, adopted in 2,020. The guidance is advisory in form, as supplementary planning documents are, and we design to it and quote its paragraphs in our design statement so the officer can see which rule each choice answers.

    Many online sources and older planning records still refer to the superseded guide. We check any precedent you give us against the date it was decided and against the current text.

    Georgian brick terrace with sash windows, arched fanlight doorways, stone steps and iron railings in London

    Green belt around the edges, conservation areas at the core

    With 55 per cent of the borough in green belt, a good share of the villages and fringe houses fall under the rule that an extension must not be disproportionate to the original building. We measure the original house and work out the headroom before the design begins, with the results laid out in a short table the officer can follow.

    The council publishes 6 conservation areas. For many addresses the live question is green belt rather than heritage. Historic England lists 260 entries: 4 at Grade I, 11 at Grade II* and 244 at Grade II. The borough holds 9 scheduled monuments, 1 registered park or garden and 4 Heritage at Risk entries.

    Our free check separates the two: it tells you whether your address is in green belt, in a conservation area, near a listed building, or none of these.

    Decisions: a high grant rate and a small prior approval record

    Broxbourne decided 287 householder applications in the latest twelve months, granted 93.7 per cent and decided 93 per cent in time. The figure describes the past, not your house.

    Prior approval for a larger single-storey rear extension is used very little: 1 was granted and 4 refused in the latest national statistics year. For a modest project the lawful route is often a lawful development certificate in Broxbourne, which records that work falls within permitted limits. The council dealt with 73 certificates in the statistics period.

    For an extension that exceeds permitted limits, a householder application drawn to the new guidance is the natural choice, and we price it as such.

    Loft, rear and side: how the one guidance reads across projects

    Because one document now covers extensions and roofs, a scheme that combines them, such as a rear extension with a dormer above, is read as a whole. We draw the two together and test the combined mass against the neighbours, rather than treating each as a separate job with its own risk.

    A loft conversion is usually the lighter touch in a green-belt village because it adds space without enlarging the footprint. A rear extension is the better use of a deep garden in the built-up area. A side addition needs care for the gap to the boundary and for the visual effect along the street.

    We prepare options for the layout in the first stage and, for a house with real potential, a 3D visual so you can compare the options before choosing one to take to the council.

    Who lives here and what they build

    The borough has about 103,130 residents, and the last Census counted 39,849 households. 73.7 per cent of households live in a house or bungalow and 68.6 per cent own their home, a profile that favours extensions, lofts and garden rooms over flat conversions.

    Prices frame the decision. Detached houses averaged £899,382, semi-detached £525,887 and terraced £409,990, with a twelve-month change of 2.5 per cent in the average across all homes.

    Those are borough-wide averages, and a single street can sit well above or below them.

    Architectural drawings and related services in Broxbourne

    The first stop is usually planning drawings in Broxbourne. Householders also commission loft conversion drawings in Broxbourne and rear extension drawings in Broxbourne. Nearby councils with their own checks are Epping Forest, Enfield and Welwyn Hatfield.

    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.
    Red-brick mansion blocks and shopfronts on a street corner
    The street around you
    Move across the plinth — the blocks rise around the pointer.

    Nearby councils

    Questions

    Do I need planning permission for an extension in Broxbourne?

    Many modest rear extensions fall within permitted development, but green belt covers 55 per cent of the borough and conservation areas remove rights in places. We check your address free.

    How much do architectural drawings cost in Broxbourne?

    Householder planning drawings start at £745 including VAT, fixed and published up front. The council's fee is paid separately.

    Which guidance covers house extensions in Broxbourne?

    The Residential Design and Amenity Supplementary Planning Guidance, read with the Broxbourne Local Plan 2018-2033. It replaced the earlier guidance on extensions, conversions and driveways.

    Can I convert my Broxbourne loft?

    Often yes. The same guidance covers roof alterations and loft conversions, and we confirm whether permitted development or a householder application is the right route.

    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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