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Building regulations

Fire strategy plans for London homes

A fire strategy plan is a drawing and short note showing how people get out of your building and how fire is kept in check while they do. Building control asks for one on lofts, conversions to flats and shared houses. We prepare it from £429, to match your building regulations drawings.

From £429, no VAT to add

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  • Fixed fees, no VAT to add

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We use it to check conservation areas and constraints.
Pick the council that decides your application.
A few lines: what you want to build, and anything the council has already said.
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    The fixed fee for fire strategy plans

    Fixed fee
    from £429
    Total you pay
    from £429
    Council fee
    paid to the council separately

    No VAT to add. The fee is fixed in writing after a free constraints check of your address.

    What you get

    • Escape routes marked on every floor
    • Fire doors, glazing and enclosure of the stairway identified
    • Alarm and detection layout
    • A one-page written strategy
    • Coordinated with your building regulations drawings
    • Answers to the building control surveyor's questions
    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 fire strategy plans

    Five 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. 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.

    4. Building regulations

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

    5. 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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    What the regulations actually ask

    Part B of the Building Regulations has five requirements, and a fire strategy answers each in plain terms. The first is the one people feel: "Appropriate provisions for the early warning of fire, and appropriate means of escape in case of fire from the building to a place of safety outside the building."

    The rest cover the building itself. Linings must "Internal linings shall adequately resist the spread of flame over their surfaces." The structure must hold: "In the event of fire, the stability of the building will be maintained for a reasonable period." The outside must hold too: "The external walls shall adequately resist the spread of fire over the walls and from one building to another, having regard to the height, use and position of the building." And firefighters need a way in: "Reasonable facilities to assist fire fighters in the protection of life."

    The official guidance on how to meet them is Approved Document B, volume one for dwellings. It is currently "The 2019 edition incorporating amendments." We design to the edition in force when your application is made.

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

    Where a plan is asked for

    The most common cases are a loft conversion that adds a floor above the first floor, where escape from the new room runs down the existing stair; a house split into flats; and a house let to several tenants.

    In each, the council wants to see the route from every bedroom to the front door, the doors that protect it, the alarms that warn of fire and what happens to the stairs and the enclosure round them. A sketch scribbled by a builder rarely gets that across; a drawn plan does.

    If you let the building, the same plan can support a licence application. Our HMO licence application page explains how the two fit.

    What our plan shows

    Each floor, with the escape route marked from the furthest room to the outside, and every door on it labelled with its fire rating. The position of smoke and heat alarms and how they are linked. The protected stairway where there is one, and the glazing and openings that must be fire-resisting.

    We add a short written strategy on one page: what the design relies on, and what the occupants must keep clear. The plan is coordinated with your building regulations drawings, so a door shown on one is the same door on the other.

    For landlords and investors

    A plan prepared once is reused. Lenders, insurers and licensing officers all ask how a rented building handles fire, and a clear drawing answers them without a new site visit.

    If the conversion also needs permission, see our change of use and flat conversion drawings pages. If the layout is still moving, a feasibility study tests the stair and escape before you commit to a scheme.

    How we work

    Send us the existing and proposed plans, or ask us to draw them. We mark the escape route, check it against the guidance and tell you plainly where the layout fails and what changing it would involve.

    We then issue the plan for you to pass to building control with the rest of the application. The surveyor decides whether it complies. Where they ask a question, we answer it.

    The national rules in figures

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Building Regulations 2010, Schedule 1, B1: means of warning and escapeAppropriate provisions for the early warning of fire, and appropriate means of escape in case of fire from the building to a place of safety outside the building—legislation.gov.uk
    Building Regulations 2010, Schedule 1, B2: internal fire spread, liningsInternal linings shall adequately resist the spread of flame over their surfaces—legislation.gov.uk
    Building Regulations 2010, Schedule 1, B3: internal fire spread, structureIn the event of fire, the stability of the building will be maintained for a reasonable period—legislation.gov.uk
    Building Regulations 2010, Schedule 1, B4: external fire spreadThe external walls shall adequately resist the spread of fire over the walls and from one building to another, having regard to the height, use and position of the building—legislation.gov.uk
    Building Regulations 2010, Schedule 1, B5: access and facilities for the fire serviceReasonable facilities to assist fire fighters in the protection of life—legislation.gov.uk
    Approved Document B volume 1 (dwellings): the current edition on GOV.UKThe 2019 edition incorporating amendments—gov.uk

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

    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

    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.
    Pencil resting on a dimensioned technical drawing beside a scale rule
    Every layer specified
    Move across to open the layers; move down to pick one.

    Questions

    Does every extension need a fire strategy plan?

    No. A single-storey rear extension usually needs only a few notes on the drawings. Plans matter where escape routes change, as in lofts, flats and shared houses.

    Is this the same as a fire risk assessment?

    No. A fire risk assessment is a review of an occupied building, often a legal duty for landlords of shared buildings. A fire strategy plan is a design document for work being built.

    Can you redesign my layout if the escape route fails?

    Yes. Moving a door or reshaping a landing is often cheaper than a sprinkler or a new stair, and we show the options.

    Do you certify the building?

    No. We design and draw. Building control inspects and signs off the work.

    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.