Standard Assessment Procedure (SAP) calculations reveal the energy performance of domestic properties and have been a mandatory part of building regulation compliance since 1995. If you are building a new home, or looking to rent an existing home with an expired EPC certificate, you will need to find a qualified local energy assessor to carry out the SAP calculation.

Our expert sustainability consultants are a team of experienced, friendly, and knowledgeable experts well-versed in building compliance. Get in touch today for a free consultation or competitive quote.

Why work with us?


Our sustainability consultants have extensive experience in meeting regulatory requirements, yet work hard to go beyond mere compliance with the building regulations.

We pride ourselves on delivering decarbonisation advice to help our clients build lower carbon, energy-efficient properties.


We reduce the amount of assumed data in each calculation to the bare minimum, meaning that our SAP calculations are as accurate as possible.

Conversations with clients are key to this process and our work improves each time we work on a new project, thanks to the collaborative approach we adopt with our clients. 


Our office-based staff work hard to book all appointments as quickly as the delivery schedule allows.

We work on a two-week schedule, with the vast majority of SAP calculations being delivered well within that window.


Our rate card prices for all services are reviewed regularly, so we’re confident that you won’t find a better service for a better price anywhere else. If you think you’ve found one, we’ll either beat or match it.


Navigating the complexity of energy efficiency, decarbonisation, and building regulation updates isn’t easy.

We’ve worked hard to explain a range of topics related to building compliance in plain English to help non-experts get the information they need.

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