• We are experienced architects, designers and technicians who have trained and registered as accredited Domestic On Construction SAP Assessors


    'what is SAP rating'

    The predicted annual energy cost per square metre of a building is expressed on a scale of 1-100. A SAP rating of 1 represents very high running costs per square metre while a rating of 100 represents zero energy costs. The dwellings that are considered net exporters of energy, by using renewable technologies, are able to achieve a rating above 100.


    'why use an Architect for SAP'

    An architect is often the best person to understand a building, even one designed by another architect. From using in-depth construction and mechanical services knowledge and their ability to co-ordinate information between other professionals and to oversee the design of the whole building system itself, they can give appropriate advice in terms of construction, materials and energy assessment. Information required for the calculation can be extracted directly from the CAD file without the need for any other form of issue (paper, pdf). This eliminates the possibility of inaccuracy when measuring from drawings and smooths the transfer of information between designer and assessor.


  • Services

    Domestic New Built SAP Calculations Design Stage

    Domestic New Built SAP Calculations As Built

    Extract report to Code Assessors for compliance

    Water Efficiency Calculator for New Dwellings

    U value calculations

    New Build EPC

    If you require a service not listed above, please contact us as we will be continually expanding our services over time...

  • Information

    Full SAP is the adopted method for proving compliance with the Building Regulations Approved Document L1A for New Build dwellings. Working in accordance with the Government's latest Standard Assessment Procedure for Energy Rating of Dwellings [SAP 2012] we can advise you on the most advantageous methods of construction and compliance.

    All new dwellings must now prove compliance at design stage as a Building Regulation compliance. We can provide you with the Design SAP and Compliance Checklists for all new dwellings along with a simple material checklist to simplify the process which would eliminate the need of redesign work if the property fails to achieve a pass rate.

    On completion of the build, the property will need to be air tested and an As Built SAP completed to demonstrate compliance with the Building Regulations, and an Energy Performance Certificate (EPC) can be lodged with the national register at Landmark.

    The Standard Assessment Procedure (extract from RIBA web site)
    The Standard Assessment Procedure (SAP) energy rating is the government’s preferred domestic energy rating. It provides the basis of assessment against the energy standards in the Building Regulations (in England and Wales, and Northern Ireland), the Energy Saving Trust’s Energy Best Practice Standards and the Code for Sustainable Homes. It is also the basis of assessments for the production of Energy Performance Certificates (EPCs) for new dwellings.

    SAP was introduced in 1995 and is updated on a regular basis to incorporate improved understanding of domestic energy use and reflect changes in the technologies used in dwellings.
    The SAP of a dwelling is based on the annual fuel use for space heating, water heating and fixed internal lighting only, per square metre of floor space, under standard occupancy. It is expressed on a scale of 1 (very inefficient) to 100+ (very efficient). Dwellings with SAP energy ratings greater than 100 are net energy exporters (due to local micro generation).

    SAP energy ratings are independent of location - all dwellings are assumed to be located in the East Midlands. This means that three identical dwellings built in Cornwall, Cheshire and Caithness will all have the same SAP. Existing dwellings may be assessed with a version of SAP known as Reduced Data SAP (RDSAP). This procedure uses ‘least unlikely’ default data for inputs such as external wall and ground floor insulation, window areas and ventilation, in order to reduce the cost and complexity of energy surveys. It is therefore slightly less accurate than the ‘full SAP’ procedure that is used for assessments of new dwellings. RDSAP is the basis of assessments for the production of Energy Performance Certificates (EPCs) for existing dwellings.

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