Building Services Engineering

Sustainability Consultancy

Low Carbon Design

Building Thermal Modelling

Building Energy Certification

M&E Inspection & Testing


Flatt provides all building certification required for sale, lease or rent of buildings, along with energy and carbon evaluation certificates to manage and inform building users for de-carbonating opportunities review and planning submissions.

Display Energy Certificates (DEC)

We can provide the required annual Display Energy Certificates with an advisory report (valid for seven years) for all Public and Private buildings.


FLATT can provide a full ESOS Scheme Consultancy services; starting from Initial Assessment to a full review of available energy data and the submission of your data to the Environment Agency. ESOS is an energy savings opportunity scheme that is mandatory for organisations in the UK that meet the qualification criteria for every four years.

Energy Performance Certificates (EPC)

We offer a comprehensive building energy certification service for both commercial and residential properties. Services options can be assessed to ensure compliance with Building Regulations, European Directives, BREEAM and HQM (CSH) Assessments. This includes the provision of SBEM (Level 3, 4, and 5) and SAP calculations for buildings of all types and complexity.

Building Regulation Compliance (SAP/PEA/EPC)

Energy Performance Certificates for new Residential properties using Government approved Standard Assessment Procedure (SAP) software can also be provided for Building Regulation Part L1 compliance and to support Code for Sustainable Homes assessments.

Accredited Assessment (SBEM)

Our accredited energy assessors will construct a computer model of a client’s premises – either from drawings or survey – that accurately represents the building’s envelope and heating and cooling installations.

The model is then analysed using government approved SBEM software. An Energy Performance Certificate for the premises will be issued indicating the building’s energy rating based on CO2 emissions. We will then lodge the EPC on the National Register on behalf of the client.

We’ll also advise clients of opportunities to improve their building’s energy performance with a report outlining recommendations.

Building Energy Certification

  • BREEAM accreditation management
  • Building Regulations Part L SBEM Analysis (Level 3, 4 and 5)
  • Building Regulations Part L Energy and Emission Assessments
  • Commercial Building Energy Performance Certification (EPC)
  • Residential SAP/PEA analysis for new dwellings
  • Residential Energy Performance Certification (EPC)
  • Display Energy Certificates (DEC) for Public Buildings
  • Air conditioning inspections to TM44
  • Building Regulations Part G Water Usage Calculations