Our services

HTA Sustainable Futures provides sustainability, energy and building physics services across RIBA Stages 1 to 6.

Strategy and analysis (RIBA Stages 1–3)

• Energy, sustainability and carbon strategies: low-carbon energy approaches that meet or exceed planning policy, including London Plan targets.

• Sustainability statements: planning documents explaining how a scheme meets local and national sustainability policy.

• Daylight, sunlight and overshadowing assessments: analysis of internal daylight to BRE guidance, impacts on neighbouring buildings using Vertical Sky Component (VSC), and sunlight to outdoor amenity spaces.

• Overheating analysis (Part O): dynamic thermal modelling to Building Regulations Part O and CIBSE TM59, informing window sizes, shading, ventilation and façade design.

• Whole Life Carbon Assessment (WLCA): measurement of operational and embodied carbon across a building's life cycle.

• Wind microclimate studies: pedestrian comfort analysis to identify and mitigate wind hotspots around buildings.

• Circular Economy Statements: strategies to reduce waste, reuse materials and design for future adaptability.

• BREEAM pre-assessment: early strategy for BREEAM New Construction, Refurbishment and Fit-Out, Infrastructure and Home Quality Mark.

• Passivhaus design and modelling: early-stage designPH and PHPP modelling to make schemes Passivhaus-ready.

Compliance and certification (RIBA Stages 4–6)

• SAP calculations and EPCs: Standard Assessment Procedure (SAP) energy modelling and Energy Performance Certificate (EPC) production.

• Thermal bridging analysis: junction modelling to reduce heat loss and improve the accuracy of SAP results.

• BREEAM certification: management of the assessment process through to final certification.

• Fitwel certification: health and wellbeing certification for residential and mixed-use buildings.

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