Sustainability & Energy
Overheating Assessment (TM59)
CIBSE TM59 overheating analysis.
At a glance
- Accepted by planning authorities UK-wide
- Fixed fee, quoted up front
- Fast, reliable turnaround
- One accountable point of contact
What it is
A TM59 assessment demonstrates that residential designs won't overheat — an increasingly common planning requirement.
When you need it
Frequently conditioned for new residential schemes, especially flats.
What you get
What's included
Dynamic thermal modelling (TM59)
Overheating risk analysis
Passive mitigation recommendations
Reporting for planning
Not sure whether you need a Overheating Assessment?
Send us your site postcode and a brief description of your proposed development, and we'll tell you whether a Overheating Assessment is likely to be required and what level of assessment your site may need — usually within a day, at no cost.
How it works
From quote to consent
Share your site
Send the postcode, plans and any council correspondence — we confirm scope and fee up front.
We assess & value-engineer
Our specialists prepare your Overheating Assessment, finding the most cost-effective route that still satisfies the regulator.
Consent-ready report
A clear report the authority will accept, with us on hand for any queries or conditions.
FAQs
Frequently asked
What is TM59?
The CIBSE methodology for assessing overheating risk in homes.
How do I avoid overheating?
Through orientation, shading, glazing and ventilation — best designed in early.
Tell us about your site
Send us your location and plans for a fast, fixed-fee quote — and honest advice on exactly which reports you do and don't need.