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  • Buildings & Infrastructure​

Building performance & energy compliance

Meet building regulations with confidence. Prove energy efficiency with certainty.

From planning to completion – compliance, sustainability and overheating protection from a single source

Regulatory requirements for buildings are constantly growing – from energy assessments at the planning stage to on-construction certification and the evaluation of existing stock. CERTANIA supports developers, contractors and clients through every phase: with robust calculations, precise on-site measurements and clear consultancy that minimises cost and time. Our experienced team keeps you up to date with evolving building regulations and ensures your project is completed compliantly, sustainably and on schedule.

Overview of our services

  • SAP Calculations (Residential)
    Energy calculations under SAP for residential buildings – from early feasibility through to as-built compliance under Part L

  • SBEM Calculations (Commercial)
    Simplified Building Energy Model (SBEM) assessments for non-domestic buildings – delivered as part of our commercial Part L package, including all relevant tests and certifications

  • Air Tightness Testing
    Measurement of building airtightness at practical completion, as well as for existing buildings and retrofit projects (PAS2035 compliant)

  • Thermal Bridging Calculations
    Early design-stage analysis of building details for thermal performance – to minimize heat loss and to provide the input data required for SAP and SBEM calculations in support of Part L compliance

  • Overheating Risk Analysis – Part O
    Risk assessment in accordance with Part O using the simplified method, as well as dynamic thermal simulation (IES modeling)

  • Energy Statements
    Production of energy statements to meet local planning policies and conditions, including the requirements of the London Plan

  • LZC Feasibility Reports
    Feasibility reports for Low and Zero Carbon Technologies in support of Part L Reg 25A, the 'Be Green' element of London Plan Energy Statements, and BREEAM credits (Ene 04)

  • Acoustic Testing & Noise Surveys
    Nationwide sound insulation testing for new builds and conversions (residential and commercial), as well as noise and vibration surveys in accordance with BS 8233 and BS 4142 

  • As-Built Documentation & BREL Report
    Comprehensive compliance documentation for project handover in line with the Future Homes Standard and Part L – including digital submission, photo evidence with geolocation data, and progress tracking via the Submit & Track dashboard

  • Thermal Performance Monitoring (SmartHTC)
    Non-invasive on-site measurement of a building's actual thermal performance – for quality assurance, retrofit planning and direct comparison of predicted versus actual efficiency, without the need to vacate the property

  • U-Value Monitoring (In-Situ)
    Long-term on-site measurements on existing buildings over several days or weeks to determine the real-world U-value of the building envelope in accordance with ISO 9869

  • Commercial EPCs
    Energy Performance Certificates for commercial buildings of all sizes and portfolio scales – with advisory support on the most cost-effective routes to Minimum Energy Efficiency Standards (MEES) compliance

  • ESG Data Aggregation & Reporting
    Centralized consolidation of all project-relevant compliance and sustainability data (SAP results, as-built data, test results, photo evidence) for ESG reporting

Our Experts:

FES Group FES Group 
Sustainability consultancy, performance testing and building compliance Learn more

The industries:

  • Infrastructure
  • Energy / power generation​
  • Public Communities
  • Construction & real estate​
  • Built environment​