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Accurate, Efficient And Reliable SAP Calculations

Building regulations complianceRoll into 2018 with faster SAP calculations and lower prices!

We have streamlined our SAP calculation costs, meaning we can now produce our legendary SAP's faster and at a lower price - especially this Spring where we are adding further discounts!

Before you start a new build, it is a legal requirement to complete and submit the SAP calculations and building regulations compliance report. The earlier you consider the SAP calculation and its possible implications, the more likely you are to comply with the building regulations.

Part L of the Building Regulations is difficult to comply with at times; but we are here to help. At Tophouse Assessments, we listen to your individual needs and provide you with the best SAP calculations and solution based upon these specifications.

We offer a quality service and provide all our clients with the very best possible solutions. We will discuss your requirements before making our recommendations on how to best comply to all current building L1A and L1B regulations; saving you money and avoiding potential further costs in the future.

For free advice and a no obligation quotation, call us now on 01634 799115.

SAP calculations are required for a range of build projects

Working for clients across Kent, London and the Home Counties, including Croydon, Medway, Bromley and Maidstone, we specialise in providing comprehensive SAP calculations for building companies and architects working on;

New builds

New Build Properties

Highly glazed extensions

Property Extensions And Highly Glazed Extensions

Building refurbishmet tests


Loft conversion tests

Loft Conversions

Completed projects

Already completed

We Could Save You £1000's

We find that some providers offer cheap SAP calculations that are quick and easy but they are not optimised and typically cost the builder thousands of pounds in unnecessary details such as:

  • MVHR systems
  • Solar Panels
  • Unrealistic Air Test Targets
  • Log Burning Fires
  • Extra Insulation

We use our expertise to fully optimise every calculation and reduce the cost of your fully compliant build. We aim to always provide the best solutions to comply with Part L.

How SAP Calculations Work

In a nutshell, the SAP calculation is a mathematical model. The official method used in the UK, the SAP calculation will determine the energy consumption in domestic dwellings. We calculate the energy consumption to not only assess compliance to current UK building regulations but also generate an Energy Performance Certificate. This is legal requirement when a building is sold or rented out. For new builds an (as built) SAP calculations, a compliance report, an air test certificate and a full SAP EPC are normally required by building control. A 'RDSAP' EPC as typically provided for existing dwellings by estate agents will not be acceptable for a new build.

Based in Chatham, we work throughout Kent, London and the Home Counties, providing building companies and architects with the most reliable, accurate and specialist SAP calculations and air tightness testing services to help buildings pass current building regulations.

We have recently undertaken SAP calculations for clients in Gillingham, Rochester, Canterbury, Dover, Deal, Folkestone, Maidstone, Ashford, Tunbridge Wells, Tonbridge, Sevenoaks, Bromley, Orpington, Dartford, Bexleyheath, Rainham, Aylesford, Chatham, Strood, Brighton, Ramsgate, Chelmsford, Colchester, Reigate, Croydon, Epsom and Cambridge.