TM59 Residential
What is a TM59 Overheating Assessment?
TM59 is a CIBSE methodology used to assess overheating risks in new residential buildings. Required for planning and Building Regulations (Part O), these assessments ensure homes remain comfortable and safe in warm conditions.
Why TM59 Is Important
Overheating is a major issue in modern developments. TM59 provides an objective measure of whether a building will remain usable in high-temperature scenarios.
Our approach
Why Choose Us for TM59
Through experienced startup consultants who understand the isolated tasks necessary, a client can rely on a professional to manage a critical step in the early stages and focus on other items that need attention.
how it work?
The TM59 Process
Ensuring Safe & Comfortable Living Environments
Collect building drawings
& specifications
Build dynamic
thermal model
Run overheating
scenarios
Provide mitigation
strategies
Issue full TM59
compliance report
Let’s Collaborate with Us!
Frequently Asked Questions
Some frequently asked questions about the service that you may have questions about
What is a SAP calculation and when do I need one?
A SAP (Standard Assessment Procedure) calculation measures the energy performance of a dwelling. It’s required for all new builds, conversions, and certain extensions to show compliance with Building Regulations Part L.
What’s the difference between SAP and SBEM calculations?
SAP is used for residential buildings, while SBEM (Simplified Building Energy Model) applies to non-domestic buildings such as offices, schools, or retail units.
When should I carry out a SAP or SBEM assessment?
Ideally, during the design stage — early assessments help identify cost-effective ways to meet energy targets and avoid redesigns later.
What information do I need to provide for an energy assessment?
We typically require architectural drawings, construction details, heating and ventilation specifications, and window/lighting information. Our team can guide you through exactly what’s needed.
