A: Holborn Tower, London, WC1V 6PL

T: 0207 231 0060 

E: info@thepes.co.uk | W:ThePES.co.uk



PES offers a complete range of sustainability and consultancy services to the property and development industry to meet green planning and regulatory requirements.

We provide a full suite of services from pre-planning strategic advice through to full design stage and post construction sign off; delivering added value to domestic and commercial projects alike.

Our expertise spans SAP, SBEM and Level 5 EPC assessments for Building Regulations compliance to full building environmental assessments and IESVE based dynamic modelling to optimise thermal comfort & building performance, reduce operational emissions and limit the embodied carbon in new developments.

Our hydrology department looks after flood risk assessment, SuDs strategy and water quality issues.

Other services include BREEAM assessments, Air Quality Assessments, Green House Gas emission reporting and Net Zero Carbon assessments


Energy efficiency; now an everyday regulatory requirement, and very often implied into planning obligations by most local authorities countrywide each with its own specific policies.

The PES identify the national, local and site specific requirements and ensure that your scheme is compliant in a pragmatic and deliverable manner – ensuring early validation and cost effective solutions to meet subsequent planning and regulatory requirements.

  • Part L SAP and SBEM modelling
  • Level 5 EPCs & Dynamic Simulation Modelling
  • CIBSE TM59 and Part O overheating analysis
  • CIBSE TM54 Operation Energy Analysis
  • HVAC strategies & design optimisation
  • Energy & Sustainability statements
  • Site surveys and as-built EPCs


The PES offers a complete range of sustainability services to guide the property and development industry though the options and to ensure green planning and regulatory requirements, are met. We provide a full suite of services from pre-planning strategic advice through to full design stage and post construction sign off


  • Whole Life Carbon & Circular Economy
  • BREEAM assessment and AP services
  • WELL
  • Air Quality Assessments
  • GHG Reporting
  • Net Zero Carbon Assessments


Our comprehensive understanding of policy and procedures and our director-led services ensure we bring to bear the right mix of skills and experience to provide creative solutions for the most hydrologically challenging and complex projects.


  • Flood risk assessments & Mitigation design
  • Flood & Evacuation Plans
  • Sequential & exemption tests
  • Sustainable urban drainage system (SuDS) Strategies and detail design.
  • Environmental statements (Water Chapter)
  • Foul & surface water drainage strategy & detail design.
  • Expert Witness services
  • Utility Assessments


Energy  – Flood Risk  – Sustainable Drainage  – BREEAM – Air Quality – Sustainability – Building Regulations – Dynamic Building Simulation – London Plan