Part O Overheating Assessments Ltd operates within the building compliance and environmental consultancy sector, specialising in overheating risk assessments for residential and commercial developments. The company supports compliance with Part O building regulations and provides guidance relating to thermal modelling and ventilation strategies. Its services typically include assessment reporting, design consultancy, and compliance support, aligned with practices in sustainable building design. The organisation helps improve occupant wellbeing, energy performance, and regulatory compliance across modern building projects.