Why Choose Us


Ratio Seven provide energy consultancy services and advice to major, small and private housing developers, housing associations and architects.



We have an in-depth understanding of all aspects of house building (having worked and managed within technical departments) and have extensive knowledge of all the available technologies and software. We are always on hand to discuss your requirements and our approach is collaborative, informed and patient. We aim to quickly become part of your team.


For us it’s more than a number crunching exercise, we work hard on your behalf to deliver a proactive approach to all our projects resulting in energy solutions which are compliant, practical and more importantly, cost-effective.

Our Services

• SAP Calculations

• EPCs

• Air Tightness Testing

• Technical Coordination

• Building Regulation Specifications and Advice

• Construction Specification

• Build Cost Reduction



iATS Air-testing-logo