This page is currently under review and will be updated with new content soon.
What is Part O?
Part O of the Building Regulations was introduced to address the risk of overheating in new residential buildings. It formally replaced reliance on TM59 as a standalone assessment method and became a regulatory requirement on 15 June 2022.
Part O compliance can be demonstrated using either the simplified method within the Approved Document or through detailed dynamic thermal modelling where required.
We provide overheating assessments in line with Part O guidance and, where appropriate, dynamic thermal modelling.
What we need from you
- Site plan
- Plans
- Sections
- Elevations
- Or Revit model (as opposed to plans, sections, elevations)
- Building specification with specific product details – Especially HVAC details
- Site location
- Any restrictions on Dwelling(s), such as un-able to open windows, vulnerable occupants, Window restrictors
Using this information we can produce a detailed report informing you of the dwelling(s) in question performance.
Please email with the above details for a quote.