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Camden, London

MEP design in Camden

MEP design in Camden is a flats-and-period-homes discipline: only 13.3 per cent of households live in a house, and the borough holds 1,971 listed entries. We design heating, ventilation, cooling risk and water for these constrained buildings and draw them into the architecture. Fixed quote after a free constraints check.

Fixed quote after a free constraints check

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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 mep design

    Four 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. Building regulations

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

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

    Camden's thermal modelling and water rules

    Camden Planning Guidance on energy efficiency and adaptation goes further on overheating than the standard energy calculation. Where a development is at risk, it asks for dynamic thermal modelling in addition to the standard energy calculation, and gives the method as: dynamic thermal modelling, TM49 DSY. All new development must also submit a statement showing that the cooling hierarchy was followed, and active cooling is accepted only if the need is demonstrated.

    That hierarchy comes from the London Plan, and its own summary is: cooling hierarchy, 6 steps. For a top-floor flat under a flat roof with large south-facing glazing, those steps change real decisions: shading before glass, openable windows on two faces, a night purge route, and only then a cooling unit.

    Water is the second rule. The adopted London Plan figure is 105 l/p/d (+ up to 5 l external). Camden's emerging local plan sets its own figure, with a draft policy of 110 l/p/d (draft CC9) and rainwater harvesting in new buildings, but the council reports it as a submission draft that has not been adopted. We design to the adopted figure, which is the lower of the two, so fittings chosen for it also meet the draft.

    The national optional standard is 110 litres per person per day, against 125 as the default, which is why the choice of showerhead and cistern matters more than the boiler.

    Pencil resting on a dimensioned technical drawing beside a scale rule

    Local figures for Camden

    Figures with their unit, period and source
    MeasureValuePeriodSource
    Overheating: where a development is at risk, dynamic thermal modelling is required in addition to SAP/SBEM, using CIBSE TM49 (2014) design summer years for London; all new development must submit a statement showing the cooling hierarchy was followed; active cooling only if need is demonstrated.dynamic thermal modelling, TM49 DSY—camden.gov.uk, Camden Planning Guidance: Energy efficiency and adaptation (January 2021), pp.50-51, paras 10.4-10.7 and key messages
    Water efficiency: emerging Camden Local Plan policy CC9 would require residential development to meet the Part G optional 110 litres per person per day (including 5 litres external) and rainwater harvesting in all new buildings. Submission draft, not adopted; London Plan SI 5 (105 l/p/d) is the adopted London-wide figure.110 l/p/d (draft CC9)—camden.gov.uk, Camden Local Plan 2026-2041 Chapter 8 (submission draft), p.332 (printed), Policy CC9
    London Plan Policy SI 5C(1): development proposals should, through planning conditions, limit mains water use to the Building Regulations optional requirement, 105 litres or less per head per day for residential development, excluding an allowance of up to 5 litres for external use. Applies in every London borough.105 l/p/d (+ up to 5 l external)—london.gov.uk, The London Plan 2021 (GLA, March 2021), p.356, Policy SI 5 part C(1)
    London Plan Policy SI 4B: major development must show through an energy strategy how internal overheating and reliance on air conditioning are reduced, following the six-step cooling hierarchy (reduce heat entering; minimise internal heat generation; manage heat with thermal mass; passive ventilation; mechanical ventilation; active cooling). Para 9.4.1 says the principles can also be applied to minor development.cooling hierarchy, 6 steps—london.gov.uk, The London Plan 2021 (GLA, March 2021), p.354, Policy SI 4 part B and para 9.4.1
    Households living in a house13.3 % of households living in a house or bungalow (detached, semi-detached or terraced)Census 2021nomisweb.co.uk
    Listed building entries1,971 list entries (Historic England, within the LPA boundary)—planning.data.gov.uk
    Conservation areas40 named conservation areas published by the council—planning.data.gov.uk
    Householder applications decided in time77.7 % decided within 8 weeks or an agreed extended period1 July 2025 - 30 June 2026assets.publishing.service.gov.uk
    Householder appeals allowed35.5 % of householder appeals alloweddecision dates 1 Jul 2021 to 30 Jun 2026assets.publishing.service.gov.uk
    AD L Vol 1 (2026) para 4.10, PDF p.51; 2021 edition para 5.10, PDF p.4655 degC—gov.uk
    Building Regulations 2010 reg.36(1)-(3); AD G (2015 incl 2016 and 2024 amendments) Requirement G2 and reg.36, PDF p.17110 litres per person per day—legislation.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 Camden
    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

    MEP design in Camden: flats, leases and shared risers

    Camden has 92,759 households, and only 29.7 per cent are owner-occupied. Much services work is therefore inside a flat or a divided house, where pipes, ducts and cables run in shared voids and the lease controls what can be touched.

    A new bathroom in an upper flat needs a soil pipe route that does not cross the neighbour's bedroom, a ventilation duct to a shared riser or an external wall, and a hot water supply that does not exhaust a combi boiler. We draw those routes at the start so the freeholder's surveyor can approve them in one pass.

    Heat pumps raise a separate question for flats. Rooftop and balcony positions need landlord consent and acoustic checks, and wet heating is designed for a flow temperature of no more than 55 degrees Celsius, so emitters are larger. Where no outdoor position works, a high-efficiency electric system with careful controls may suit better.

    Listed buildings, conservation areas and basements

    Camden's 1,971 listed entries include 57 at Grade I and 153 at Grade II*. The borough also publishes 40 conservation areas, 21 Article 4 directions and 16 registered parks and gardens.

    In a listed house, the services design starts by finding what can be reused. Existing chimney voids and old pipe runs often carry new cables or ducts without cutting into historic plaster. We mark each reused route and each new penetration, so the conservation officer can see what is being disturbed.

    Basements fall under the council's Basements CPG (Camden Planning Guidance). Services in a basement include a pumped drainage system, mechanical ventilation for rooms with no external wall, damp-resistant electrical routes and a plan for plant that might flood. These details are drawn with the structural design so the two do not contradict each other.

    Planning numbers behind a Camden application

    Camden decided 394 householder applications in the latest twelve months published and granted 89.1 per cent, but only 77.7 per cent were decided in time. Owners should plan for a wait that can run past the target, and a complete application helps to avoid more delay.

    Planning Inspectorate figures show 76 householder appeals decided over recent years, with 35.5 per cent allowed. The council also granted 5 upward extension prior approvals in the latest year, a route we can discuss for a flat-roofed house.

    The average detached house in Camden sold for £3,645,110 in the latest Land Registry data, and the average flat for £671,443. Those values make a services design that avoids rework worthwhile.

    How this fits with our other services

    Our building services design page describes the broader package, and our M&E drawings service produces installer sheets. For the structure behind new plant and openings, see structural calculations in Camden and our structural engineering service.

    Camden borders Brent, Islington and Westminster, among others. Compare architectural drawings in Brent and architectural drawings in Islington for the local planning context.

    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.
    Two-storey rear extension under construction on a semi-detached house
    Every layer specified
    Move across to open the layers; move down to pick one.

    Other services in Camden

    MEP design nearby

    Questions

    Does Camden require thermal modelling for overheating?

    Where a development is at risk, the guidance asks for dynamic thermal modelling, TM49 DSY, in addition to the standard energy calculation.

    Is Camden's draft water policy in force?

    It is a draft: 110 l/p/d (draft CC9). The council reports it as a submission draft that has not been adopted, so the adopted London Plan figure applies today.

    Can I fit a heat pump in a Camden flat?

    Sometimes. It needs landlord consent, a suitable outdoor position and an acoustic check. The heating is designed for a flow temperature of no more than 55 degrees Celsius, so emitters are larger than for a gas boiler.

    How much does MEP design cost in Camden?

    Fixed quote after a free constraints check. A flat refurbishment and a listed house are different jobs, so we price after seeing the property.

    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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