JSP Sustainability: Helping to Build a Better Future.

JSP Sustainability Ltd is an industry leading sustainable design and construction consultancy specialising in energy assessment and regulation compliance. Our services include SAP calculations, SBEM calculations, Part G calculations, air tightness testing, acoustic testing, Code for Sustainable Homes assessments, BREEAM assessments, Energy Strategy reports and Planning reports.

We believe our promise to deliver an expert, efficient and friendly service has brought us to the forefront of the industry.

SAP Calculations:

SAP, or Standard Assessment Procedure, is the Government’s approved methodology for the calculation of a property’s energy consumption rate and associated CO2 emissions.

Part G Water Calculations:

Since April 2010 all new build residential development and residential development arising from a change of use must comply with Part G of the Building Regulations and achieve a water consumption rate of no more than 125 litres per person per day.

Code for Sustainable Homes:

The Code for Sustainable Homes is a star rated assessment of a new residential property covering nine areas of sustainable development.

Air Tightness Testing:

Air leakage testing or Air tightness testing is another key component of the building regulations.
Good preparation and an experienced professional partner make it so much easier to comply.


The Building Research Establishment’s Environmental Assessment Method, is the most widely recognised method of assessing the environmental quality of building design for commercial buildings.

SBEM Calculations:

SBEM, or Simplified Building Energy Model, is an approved methodology for the calculation of non-residential properties' energy requirement and CO2 emission rate. It is used to demonstrate compliance with Part L of Building Regulations.