our services

Navitas EAS offer services for architects, developers and specifiers, to ensure that they meet the requirements throughout design and build stages of a property. 

Architects, Developers and Specifiers

Energy Assessments

As accredited assessors, Navitas EAS undertake the energy assessment of all type of buildings using Standard Assessment Procedure (SAP) and Simplified Building Energy Model (SBEM) software to produce the Energy Performance Certificate (EPC) required when a property is sold, letor constructed.

SAP calculations and On-Construction Energy Performance Certificates

Undertaken at the design and as-built stages, the SAP calculation tests that the dwelling's specification complies with Part L ADL1A of the Building Regulations in England and Wales and the equivalent building standards in Scotland and Northern Ireland.

At the design stage, a Predicted Energy Assessment (PEA) is produced to allow marketing of the property, prior to the issue of the On-Construction Energy Performance Certificate on completion.

Navitas EAS are able to guide you through the process from design to completion, including calculating fabric U-values, undertaking Part G water efficiency assessments, air permeability and acoustic testing, ensuring a smooth and stress-free course to compliance and certification.

SBEM calculations and Energy Performance Certificates

Undertaken at the design and as-built stages, the SBEM calculation tests that the building's specification complies with Part L ADL2A of the Building Regulations in England and Wales and the equivalent building standards in Scotland and Northern Ireland.

At the design stage, a draft Energy Performance Certificate is produced to allow marketing of the property, prior to the issue of the Energy Performance Certificate on completion.

Navitas EAS are able to guide you through the process from design to completion, including calculating the fabric U-values, undertaking daylight and lighting requirement assessments and air permeability testing, ensuring a smooth and stress-free course to compliance and certification.

SAP calculations for Domestic Conversions and Extensions

Undertaken at the design and as-built stages, the SAP calculation tests the specification of the proposed conversion or extension demonstrates compliance with the requirements of Part L ADL1B of the Building Regulations in England and Wales and the equivalent building standards in Scotland and Northern Ireland.

Navitas EAS are able to guide you through the process from design to completion, including calculating fabric U-values, undertaking Part G water efficiency assessments, thermal imaging surveys, air permeability, and acoustic testing, ensuring a smooth and stress-free course to compliance and certification.

SBEM calculations for Commercial Extensions

Undertaken at the design and as-built stages, the SBEM calculation tests the specification of the proposed conversion demonstrates compliance with the requirements of Part L ADL2B of the Building Regulations in England and Wales and the equivalent building standards in Scotland and Northern Ireland.

Navitas EAS are able to guide you through the process from design to completion, including calculating fabric U-values, undertaking daylight and lighting requirement assessments, thermal imaging surveys, air permeability and acoustic testing, ensuring a smooth and stress-free course to compliance and certification.

Energy Statements

An energy statement is a requirement of many Local Planning Authorities and is a pre-condition to planning permission being granted. The statement illustrates the carbon dioxide (CO 2) emissions and energy consumption for the design of the project and provides an assessment of the building's carbon strategy and fabric efficiency.

Navitas EAS are able to provide fully compliant reports to accompany your planning application and satisfy the requirements of your Local Planning Authority.