London - TER DER Calculation - 020 3390 0301

The counties covered by this office are:
East Sussex, London, Middlesex, Berkshire, , Hertfordshire, Surrey, Kent, Essex, Oxfordshire,

Phone Number: 020 3390 0301 Email: london@e2consultants.co.uk

SAP Calculations is sometimes referred to as SAP Conversion Calc, SAP Conversion Assessment, SAP Conversion rating, SAP Conversion Calcs, Part L1B Compliance, SAP Conversion Calculations.

How Is A SAP Assessment Undertaken?

The SAP software will determine if a building complies with Building Regulations in London using the information provided by the SAP assessment. This crucial information relates to the type of dwelling, floors, walls, the roof, windows, doors, lighting, renewable technologies, 'U' values, hot water and ventilation.

A SAP is done off-site but requires plans and drawings of the site in order to be calculated. Amongst other things, the SAP assessor will determine how good the thermal elements are in the floors and walls and how well heat passes through these elements - this is known as a 'U' value. A high 'U' value represents a high amount of heat lost - this is used in the SAP calculation.

Why Do I Need A SAP Calculation?

Any conversions or new dwellings need to have a SAP Calculation and Predicted EPC before any work can begin as outlined in Part L of Building Regulations in London in 2006.

If you are selling a home before it has been built, you will need to provide information about energy efficiency in a Predicted Energy Assessment (PEA).

It is the responsibility of the builder to provide any On Construction EPCs when a home is constructed. This will also apply if a building is converted into fewer or more units (material change of use) and changes are made to the heating, hot water provision or air conditioning/ventilation services.

What Is A SAP Calculation?

A SAP calculation, the Government's Standard Assessment Procedure for Energy Ratings, is required to produce an On Construction EPC (Energy Performance Certificate) or a Predicted Energy Assessment (PEA).

The higher the SAP rating, the lower the cost will be to run the building. The score represents the cost of energy required by a property over the course of a year with a 100 score meaning there's no energy cost. To calculate the SAP, the assessor uses information relating to lighting, heating, hot water systems, renewable technolgies used and the elements of structure.