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Hammersmith & Fulham, London

Building regulations drawings in Hammersmith and Fulham

Building regulations drawings in Hammersmith and Fulham cost from £845 including VAT. They are the technical sheets that let building control check structure, insulation, fire safety and drainage for a terrace extension, a loft or a conversion, and they are worth getting right in a borough where the average terraced house now costs £1,139,759.

From £845 (VAT included)

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We use it to check conservation areas and constraints.
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    Two-storey rear extension under construction on a semi-detached house

    Heritage and building control in Hammersmith and Fulham

    Hammersmith and Fulham has 47 conservation areas, and Historic England lists 268 entries within its boundary. Whether a house sits in one of them matters for planning. It does not exempt the work from the Building Regulations.

    The technical drawings must respect what the planning side has fixed. If a conservation area keeps the front roof slope as it is, the loft stair, the insulation and the fire protection all have to be designed from the rear and the inside. If the house is listed, Approved Document L treats historic fabric with special consideration, and we write the reasoning for any compromise on the sheets so the examiner is not left guessing.

    The Heritage at Risk Register names 15 entries in the borough. If your house is next to one, tell us at the start, because it can change how we show temporary support and protection to the shared wall.

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

    Local figures for Hammersmith & Fulham

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Conservation areas47 named conservation areas published by the council—planning.data.gov.uk
    Listed building entries268 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Heritage at Risk entries15 Heritage at Risk Register entries within the LPA boundary (Historic England)—planning.data.gov.uk
    Households living in a house24.6 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Householder decisions506 decisions1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications granted97.8 %1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder applications decided in time79.8 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Average price, terraced1,139,759 GBP2026-07publicdata.landregistry.gov.uk
    Mayoral CIL rate (indexed)96.97 £/m² (indexed, permissions granted in 2026)—london.gov.uk
    Building Regulations 2010 reg 14A(6)Building control body must decide a full plans application within 5 weeks, or longer if agreed in writing—legislation.gov.uk
    Approved Document L Vol 1 2026, p.2AD L 2026 (Home Energy Model) takes effect 24 Mar 2027 for non-higher-risk work—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 Hammersmith & Fulham
    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

    Planning first, then the technical set

    Hammersmith and Fulham decided 506 householder applications in its latest year and granted 97.8 per cent. Only 79.8 per cent were decided within eight weeks or an agreed extension, which is the figure to plan around.

    That gap is why we sequence the work carefully. We draw the planning set first, wait for the decision, and then complete the building regulations set to match what was permitted. Doing it the other way round risks paying twice for technical drawings of a design the council changes. If your project is permitted development, our lawful development certificate service in Hammersmith and Fulham confirms it first, and the technical set follows straight away.

    What building control will check on a terraced house

    Only 24.6 per cent of households here live in a house, so many projects involve flats and structure shared with a neighbour. Each type of work brings its own checks:

    A rear extension needs foundations that clear the old ones and a drain run that does not undermine them. A loft needs a protected stair, fire-resisting doors and a floor that carries the new load. A knocked-through ground floor needs a beam sized by your engineer, bearing on padstones we show at the correct position. Every one of these appears on a single coordinated set, cut from one Revit model.

    Because the structure is shared, we also record the party-wall conditions we have assumed. They do not replace a party wall notice, but they make the later conversation with the neighbour's surveyor shorter.

    Drainage, ventilation and sound in a tight terrace

    Narrow plots make the services the hard part. A new bathroom in a loft needs a soil stack that reaches the existing drain without crossing a bedroom wall, and a new rear room needs ventilation that works with the kitchen extract rather than fighting it. We route the pipes and ducts on the plans so the builder is not forced to improvise around joists.

    Sound is the other quiet issue. Where a house has been split into flats, or you add a new floor above a neighbour's bedroom, Part E sets what the separating floor and wall must achieve. We specify the build-up, name the products and show the junctions, because a good floor with a bad flanking detail still fails the test on site.

    Drain connections and ventilation routes are each drawn at a scale where a tradesperson can price them, not simply indicated on a plan.

    Timings, notices and the energy rules

    Building control body must decide a full plans application within 5 weeks, or longer if agreed in writing. That is the statutory frame for a full plans application, and it is why we prefer that route over a building notice for houses of this value.

    The energy rules are about to move. AD L 2026 (Home Energy Model) takes effect 24 Mar 2027 for non-higher-risk work. We design to whichever edition governs your submission and tell you if the date affects your timetable. For work that also needs a rating, our SAP calculations in Hammersmith and Fulham are coordinated with the sheets.

    Price, checking and what follows

    Building regulations drawings start at £845 with VAT included. Pricing is fixed before you commit. A second chartered technologist checks every sheet, and if the examiner asks for changes we revise at no charge.

    When work is approved, the handover pack covers commencement and completion notices, party wall timing and the levy. Hammersmith and Fulham is in band 1 of the Mayor's scheme at £96.97 per square metre, which we flag before you build.

    Services next door and across the borough

    To take the design on to site, see construction drawings in Hammersmith and Fulham, or start with planning drawings in Hammersmith and Fulham. Further out, the same service is covered for Kensington and Chelsea, Hounslow and Wandsworth.

    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.
    Brick house being extended, with a wide new opening supported over the ground floor
    Every layer specified
    Move across to open the layers; move down to pick one.

    Questions

    Does a conservation area in Hammersmith and Fulham change the Building Regulations?

    No. It affects planning and the design of the exterior, but the structural, fire and energy rules apply in the same way. For a listed house the energy rules allow special consideration of historic fabric.

    Should I submit building regulations drawings before planning is decided?

    Usually not. Planning can change the design, so we complete the technical set once the planning decision is known, unless the work is permitted development.

    What does a building notice cost compared with full plans?

    Building control sets its own charges, so ask the body you choose. We normally prepare full plans because the set is checked and decided before work starts.

    How much do building regulations drawings cost in Hammersmith and Fulham?

    From £845 including VAT, fixed up front. Building control fees are paid separately.

    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.