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Building compliance services in London

We arrange and coordinate the calculations, tests, drawings and certificates London projects need, from SAP and energy statements to fire strategies and EICRs, across all 32 boroughs and the City of London.

London, England52 servicesOne written quotation
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London

Building compliance in London, managed for you.

Work in London often means flat conversions, loft and mansard extensions, basements and mixed-use schemes on tight urban sites, alongside larger residential blocks. London also adds a regional layer to planning: the London Plan 2021 sets energy, fire safety, water and drainage policies that sit alongside each borough’s own local plan.

We arrange qualified specialists for site work such as air tightness tests, sound tests, EPCs and fire risk assessments anywhere in Greater London. Desk-based work, including SAP calculations, energy statements, structural calculations and Building Regulations drawings, is prepared remotely from your drawings.

Local factors

What changes for projects in London.

These local rules and conditions affect what building control, the planning authority or the water company may ask for. We take them into account when we prepare your quotation.

London Plan energy statements

Policy SI 2 of the London Plan 2021 asks major developments to be net zero-carbon, with a detailed energy strategy and an on-site carbon reduction of at least 35 per cent beyond Building Regulations. Residential schemes must find 10 per cent of that through energy efficiency and non-residential schemes 15 per cent, with any shortfall met through the borough’s carbon offset fund or an agreed off-site alternative.

Related: Energy statements, Energy and SAP calculations, Overheating assessments

Fire statements and taller buildings

Policy D12 asks for a fire statement with major planning applications in London, and boroughs such as Westminster expect it to be an independent fire strategy by a suitably qualified third party. Where a building is at least 18 metres or seven storeys high and has two or more homes, the Building Regulations application goes to the Building Safety Regulator rather than the borough or a registered building control approver.

Related: Fire strategy and design advice, Building Regulations applications, Fire risk assessment

Sustainable drainage and Thames Water

Policy SI 13 asks developments to aim for greenfield run-off rates, following a hierarchy that puts rainwater reuse and infiltration ahead of discharge to sewers. Some boroughs go further: Kensington and Chelsea, where surface water runs into combined sewers, asks for a drainage statement even with rear extensions and outbuildings. Thames Water, the sewerage company for London, needs a build over agreement before work within 3 metres of a public sewer or 1 metre of a public lateral drain.

Related: Drainage design and applications, CCTV drainage surveys

The 105 litre water target

Policy SI 5 asks new homes in London to keep mains water use to 105 litres or less per person per day, plus up to 5 litres for outdoor use, in line with the Building Regulations optional requirement. Commercial schemes are asked to reach the BREEAM Excellent standard for water. Thames Water, Affinity Water, SES Water and Essex and Suffolk Water, which supply London, are all in areas the Environment Agency classed as seriously water stressed in 2021.

Related: Water efficiency calculations, BREEAM assessment support, Sustainability statements

A new London Plan in draft

The Mayor published a draft new London Plan on 16 July 2026, with consultation running to 15 October 2026 and an examination in public to follow. Until a new plan is adopted, the London Plan 2021 remains part of the development plan, so we check which policies apply when we prepare planning documents.

Related: Energy statements, Sustainability statements

Popular in London

Services often needed in London.

Add any of these to one quote request, or browse all 52 services by group.

Planning

Energy statements

Energy and carbon statements for planning applications, written to the local plan policy that applies.

Available in LondonView service
Part L

Air tightness testing

Pressure testing to measure air leakage against the design target, with a certificate for building control.

Available in LondonView service
Part G

Water efficiency calculations

Calculations showing new homes meet the water use limit: 125 litres per person per day, or 110 where a planning condition requires it.

Available in LondonView service
Fire Safety Order

Fire risk assessment

Assessments for commercial premises, HMOs and the common parts of residential blocks.

Available in LondonView service
Energy calculationsTestingDesign and approvalsSurveys and plansEnergy certificatesElectrical and gasFire safetyHealth and safety surveys

Questions

Questions about projects in London.

Do you cover every London borough?

Yes. We arrange specialists for projects in all 32 London boroughs and the City of London, from Westminster, Camden and Southwark to Croydon, Barnet and Havering. Desk-based work such as SAP calculations and drawings is done remotely from your drawings.

Does my London project need an energy statement?

Major developments need a detailed energy strategy under London Plan Policy SI 2. For smaller schemes it depends on the borough’s local plan and validation list, so tell us the site and we will check what applies.

Who handles build over agreements in London?

Thames Water is the sewerage company across London, so work within 3 metres of a public sewer needs its agreement, whichever company supplies your drinking water. Planning permission does not give consent to build over a sewer.

Is my London building a higher-risk building?

For Building Regulations purposes it is if it has at least seven storeys or is at least 18 metres high, and has two or more homes or is a hospital or care home. The Building Safety Regulator is then the building control body, and approval decisions rest with it.

Guidance on this page refers to England. What applies depends on the site, the building and the work, and your quotation confirms it. Approval and completion decisions remain with your building control body.

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Planning work in London?

Tell us where the property is and what you need. We confirm the scope, deliverables and price in writing.

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