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Havering, London

House extension drawings in Havering

Over half of Havering is Green Belt, 53 per cent in fact, and most of its homes are houses. House extension drawings here run from £695 including VAT, and they answer two questions together: the council's depth rule and the Green Belt test.

From £695 (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 house extension drawings

    Nine 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.

    8. Building regulations

      Technical drawings are coordinated with the structural engineer's calculations, the drainage and the planning conditions.

    9. Approval and hand-over

      Building control approval, then a next-steps pack covering the commencement notice, party wall timing and CIL.

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

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    House extension under construction with scaffolding, new glazed doors and building materials

    Havering's extensions SPD in numbers

    The Residential Extensions and Alterations SPD sets a general depth for rear extensions: 3 m terrace / 4 m semi or detached; 45 degrees. Anything deeper has to sit inside the angle drawn from the boundary at that point. On height, a single-storey extension is generally held to 3 m with a flat roof, and hipped pitches are preferred away from the boundary.

    Two storeys are treated more strictly. A two-storey rear extension is set in and limited in projection, recorded as 2 m set-in; 3 m projection (4 m exceptional), and the guide says they are rarely acceptable on terraced houses. Two-storey side extensions need the first floor set back and must respect an angle from the neighbour's side window, recorded as 1 m; 45 degrees.

    We put each of those dimensions on the drawing next to the proposed one, so the case for the depth is visible without a covering letter.

    Brick house being extended, with a wide new opening supported over the ground floor

    Local figures for Havering

    Figures with their unit, period and source
    MeasureValuePeriodSource
    As a general rule, rear extensions go up to 3 m deep for a terrace house and 4 m for a semi-detached or detached house; greater depth must sit within a 45 degree angle from the 3 m or 4 m point on the boundary.3 m terrace / 4 m semi or detached; 45 degrees—havering.gov.uk, Havering Residential Extensions and Alterations SPD 2011, p.19, para 5.3
    Total height of a single storey extension generally no more than 3 m with a flat roof; hip pitched roofs away from the boundary.3 m—havering.gov.uk, Havering Residential Extensions and Alterations SPD 2011, p.20, para 5.6
    Two storey rear extensions set in at least 2 m from the common boundary with an attached dwelling and projecting no more than 3 m (up to 4 m in exceptional local circumstances); rarely acceptable on terraced houses.2 m set-in; 3 m projection (4 m exceptional)—havering.gov.uk, Havering Residential Extensions and Alterations SPD 2011, p.22-23, paras 5.10, 5.13
    Two storey side extensions set back at least 1 m from the front wall at first floor; side extensions not permitted where they break a 45 degree line from the sill of a primary habitable-room side window of the adjoining house.1 m; 45 degrees—havering.gov.uk, Havering Residential Extensions and Alterations SPD 2011, p.24-25, paras 6.6, 6.8
    Green Belt share of the council area53 % of council area covered by green-belt polygons—planning.data.gov.uk
    Conservation areas11 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries146 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Local planHavering Local Plan 2016-2031—havering.gov.uk
    Households living in a house76.7 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Domestic gardens share of land (GLUD 2005)19.5 % of land that is domestic garden (GLUD 2005)2005data.london.gov.uk
    Householder decisions985 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted85.9 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time97.8 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Larger home extension prior approvals granted21 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    Larger home extension prior approvals refused27 decisions2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026)assets.publishing.service.gov.uk
    GPDO 2015 Sch 2 Pt 1 Class A, para A.1(f)(i)3 m (attached) / 4 m (detached) beyond the original rear wall, single storey—legislation.gov.uk
    Householder: alterations/extensions to a single dwellinghouse, from 1 Apr 2026548 GBP—ribblevalley.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 Havering
    Single-storey rear extension: the permitted development limitsDepth beyond the original rear wall: 3 m (attached) / 4 m (detached) beyond the original rear wall, single storey. Maximum height: 4 m. Within the zone near the boundary: Eaves no higher than 3 m where within 2 m of the curtilage boundary. Larger extension under prior approval: 6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSIABCD

    Single-storey rear extension: the permitted development limits

    The house in section with a rear extension; the dashed lines mark the zone near the boundary.

    A · Depth beyond the original rear wall
    3 m (attached) / 4 m (detached) beyond the original rear wall, single storey
    B · Maximum height
    4 m
    C · Within the zone near the boundary
    Eaves no higher than 3 m where within 2 m of the curtilage boundary
    D · Larger extension under prior approval
    6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSI

    House extension drawings in Havering and the Green Belt

    With 53 per cent of the borough in the Green Belt, many Havering houses are judged on whether an extension is a proportionate addition to the original building. The SPD figures are the starting point, and on green-belt land bulk against the original house is the point that decides.

    The borough has: 11 conservation areas and 146 listed entries. The borough's Havering Local Plan 2016-2031 was adopted in 2,021, and the Heritage SPD sits behind it for the houses that are protected.

    A house that fits inside the SPD figure of 3 m terrace / 4 m semi or detached; 45 degrees may still have to be shown as a proportionate addition if it lies on green-belt land, so we draw both tests on the same sheet.

    A borough of houses and gardens

    76.7 per cent of households live in a house or bungalow, and 69.5 per cent own their home. Domestic gardens make up 19.5 per cent of the land in the national Generalised Land Use Database.

    Typical jobs are a rear extension with a loft room, a side extension that adds a ground-floor room, or a garage brought into the house. We survey the existing house and test each combination against the SPD limits before you commit.

    Certificates, charges and the housing market

    The latest government return counts 578 lawful development certificate applications in Havering, showing how many owners confirm their rights in writing. The borough holds 3 scheduled monuments, 1 registered park or garden and 12 heritage at risk entries.

    The average house price was £448,648 in the latest Land Registry month, changing by 2.1 per cent over twelve months. The Mayoral levy is band 3, and Havering's own CIL varies by area: £151.52/m² (Zone A, North of A1306); £66.67/m² (Zone B, South of A1306).

    Choosing between a certificate, prior approval and an application

    A single-storey rear extension under permitted development can go 3 m (attached) / 4 m (detached) beyond the original rear wall, single storey. A Lawful Development Certificate in Havering records that fact.

    Prior approval reaches 6 m (attached) / 8 m (detached), single storey, height max 4 m; not on article 2(3) land or an SSSI. Havering gave slightly more refusals than grants on this route in its latest published year, 27 against 21, so the notice needs clear neighbour drawings. If the house is outside the rights, the alternative is planning drawings in Havering.

    How quickly Havering decides

    The council decided 985 householder applications in its latest published year and granted 85.9 per cent. 97.8 per cent met the eight-week target or an agreed extension, a record that helps us plan your timetable with confidence, though it cannot predict one case.

    Package, fee and next step

    A Havering package holds floor plans existing and proposed, elevations and sections, with location and block plans. A second chartered technologist checks each sheet; the officer's requested changes are redrawn without charge until approval. The council's fee is £548.

    When the design is agreed, building regulations drawings in Havering add the construction detail.

    Other shapes and nearby boroughs

    Try rear extension drawings in Havering, double-storey extension drawings in Havering or garage conversion plans in Havering. All local services are listed under architectural drawings in Havering.

    Next door are Barking and Dagenham, Redbridge and Bexley.

    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.
    Finished white-rendered rear house extension with large glazed doors
    Every side considered
    Flick across the turntable to spin it.

    Other services in Havering

    House extension drawings nearby

    Questions

    How deep can I extend at the back in Havering?

    The council's SPD gives a general depth of 3 m terrace / 4 m semi or detached; 45 degrees, with deeper extensions kept within the angle shown.

    Does Green Belt stop an extension in Havering?

    No, but where land is green belt (53 per cent of the borough) the extension must be a proportionate addition to the original house.

    What do house extension drawings cost in Havering?

    From £695 including VAT, quoted first. Council fees are separate.

    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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