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New-Build SAP Assessments and Part L Compliance

L1A SAP Calculations London

Fast, fixed-price L1A SAP Calculations for London projects, bundled with the other approvals, calculations and tests your site needs. We've quoted on 220+ projects in the London area since 2021.

Design-Stage SAP Assess compliance before construction begins
As-Built SAP & EPC Final assessment and EPC support at completion
Part L Compliance Clear reports for Building Control submission
Practical Design Advice Recommendations where improvements are required

Trusted across London and the South East and the UK

  • 3,200+projects quoted through our portal since 2021
  • 5,000+individual services requested by developers and builders
  • 110+UK postcode areas covered, London and the South East included
  • 15+years of construction industry experience

Also most requested in London: Private Building Control10 Year Structural WarrantySAP CalculationsExtract Ventilation Testing

L1A SAP Calculations in London

Working in London and the South East

We handle L1A SAP Calculations for house builders, developers and self-builders across London and the surrounding area, covering postcode areas E, EC, N, NW, SE, SW, W and WC, plus outer London. That includes Croydon, Barnet, Ealing, Bromley, Enfield, Harrow, Hounslow and Kingston upon Thames. Clients in London regularly add L1A SAP Calculations to their Building Control and warranty bookings.

London boroughs often set energy and carbon targets through the London Plan and local policy, so planning conditions on London schemes frequently ask for energy information alongside your Part L calculations. We can line those up at the same time.

  • Croydon
  • Barnet
  • Ealing
  • Bromley
  • Enfield
  • Harrow
  • Hounslow
  • Kingston upon Thames

L1A SAP Calculations in London: common questions

Do you provide L1A SAP Calculations in London?

We do. Send us the London site address and your drawings and we'll come back with a fixed price for L1A SAP Calculations, handled by our team from start to finish.

Which areas around London do you cover?

All of London (postcode areas E, EC, N, NW, SE, SW, W and WC, plus outer London), including Croydon, Barnet, Ealing, Bromley, Enfield, Harrow, Hounslow and Kingston upon Thames. We also work nationwide.

Can you combine L1A SAP Calculations with other services on my London project?

Yes. Most clients book several services together, such as Building Control, SAP, warranty and testing. You get one quote, one point of contact and a bundle discount.

Which councils around London do you work with?

We work on sites across the 32 London boroughs, the City of London Corporation and nearby Hertfordshire, Essex, Kent and Surrey councils, and coordinate with whichever planning and Building Control body covers your site.

Have you worked on projects near London?

Yes. Recent projects in the area include Holtwhites Hill, Fernhead Road, Station Road. You can see more in our projects portfolio.

What do you need from me to quote for L1A SAP Calculations in London?

The site address and postcode, your drawings (plans, elevations and sections) and anything you already have from planning or Building Control. We'll confirm a fixed price and timescale for your London project.

Building in London

The London development market

London projects are dominated by flats: conversions of houses and commercial buildings, infill and backland sites, and mid-rise blocks. Tight sites, party walls, overheating risk and London Plan energy policies all shape what is needed, and boroughs set their own planning conditions, so the paperwork varies from one borough to the next.

Typical London projects we support

  • House-to-flat conversions
  • Commercial-to-residential conversions above shops
  • Backland and infill sites
  • Mid-rise apartment blocks and roof extensions

Councils we work across

We handle L1A SAP Calculations for sites in the 32 London boroughs, the City of London Corporation and nearby Hertfordshire, Essex, Kent and Surrey councils, and coordinate with whichever planning and Building Control body covers your site.

How L1A SAP Calculations works, what we need from you and full FAQs

L1A SAP Calculations Across London and Greater London

We support projects throughout Central London, Westminster, Kensington, Chelsea, Camden, Islington, Southwark, Lambeth, Greenwich, Stratford, Wimbledon and Ealing.

Nearby coverage also includes Croydon, Bromley, Barnet, Enfield, Harrow, Hounslow, Romford and surrounding Greater London areas.

Request Your Free L1A SAP Calculations Quote

Complete the form below with the London project address, number of dwellings and current design stage. Upload the latest drawings, construction specification and available heating and ventilation details so our team can review the requirement and provide an appropriate quotation.






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