SAP Assessments

Newly constructed or newly converted premises require a different type of energy assessment than existing premises. The Standard Assessment Procedure (SAP) is the method approved by the Government to calculate and compare the energy and environmental performance of buildings to ensure that newly built and newly converted homes will not only meet the requirements of the Building Regulations, but also the current energy and environmental policy initiatives. The Standard Assessment Procedure (SAP)  assessment is undertaken from the various drawings, sections and specifications relating to the development rather than involving a site visit as is the case with existing dwellings.

SAP Assessments The principle aim is to calculate the quantity of energy that a new development will use, whilst delivering a prescribed level of comfort. This is done in part using standard assumptions for occupancy levels and the behaviour of those occupiers.

SAP calculations are similar to an existing dwelling assessment in so far as they are based on the energy balance of the property, considering a range of factors that contribute to energy efficiency. The SAP assessment however involves are more detailed look at the factors which have an effect. These include:

Principle materials of constructionSAP assessments for new build or conversion
Insulation provided to the building (roof, walls and floor)
Air leakage results for the dwelling and the performance of ventilation equipment
The efficiency of the heating system and the controls provided to regulate heat
the calculation of solar gains through openings in the dwelling and the elevations on which they are located
The type of fuel used to provide space and water heating, ventilation and lighting
Renewable energy technologies such as solar photovoltaic panels and thermal water systems

SAP assessments are a legal requirement for all new-build, domestic properties in the UK under Part L of Building Regulations. Homes must achieve a ‘Pass’  for the project to be approved by Building Control.

Without this, you will be unable to obtain your Building Control Completion Certificate and will not be able to sell or let your completed property.

SAP assessments KentGiven that many parts of the assessment relate to the construction of the property, we recommend that the SAP scores are calculated and considered at the outset of the project in order to be assured that the proposed construction method will meet the regulations.

You should be aware that SAP Assessments are not confined to just new buildings. New extensions or conversions (such as commercial to residential conversions, subdivision of a dwelling into separate flats) also require a SAP Assessment under Part L1b of the Building Regulations.

At Graham Kinnear Property Consultants,  we are undertaking SAP Calculations every week and by involving one of our qualified surveyors at the planning stage, we can help ensure that your property will, once complete, comply with  all Building Regulation and environmental guidelines.

Once the initial drawings are agreed and approved, a design-stage SAP calculations (known as a predictive energy assessment), showing a pass, must be provided to Building Control works start on site.

We can undertake these so called PEAs for you. If a pass is not achieved we can put forward cost effective changes which, if implemented, would mean the building could pass. This may mean alterations or  improvements to the heating system, levels or type of insulation, improved glazing, or a more air-tight construction technique.

On completion of this exercise we can issue design-stage SAP reports for submission to Building Control.

Upon completion of the construction works we shall update the design-stage SAP calculations to incorporate any changes to the design, manufacturer details for all heating systems and the as-recorded air permeability rate.

We shall then issue as-built SAP reports and an Energy Performance Certificate. The SAP certificates will be required by Building Control prior to their issuing you with your completion certificate and so it is important to not leave them until the last minute.

We are qualified and accredited to undertake both Predictive Energy Assessments and Final SAP assessments. Due to the fact that these are undertaken from the drawings rather than a site visit, we are able to offer this service on a nationwide basis.