Part O - Overheating Assessments

Overheating Assessments carried out Nationwide

If you need an Overheating Assessment, call us to book in your appointment.  Overheating Assessments can only be issued by trained and qualified inspectors.

We pride ourselves on our customer service, we believe it is important to be polite, considerate and on time when we enter a customer’s property.  You can rely on us to have your Overheating report ready quickly when you need it.

What is an Overheating Assessment?

The new Building Regulations Part O 2021 Edition is the first of its kind.  It will tackle overheating in new residential type buildings.

The overarching goal of Part O is to encourage the design and construction of buildings that limit unwanted solar gain during the summer months, and provide occupants with adequate means of removing excess heat from indoor environments.

It is important to note the measures themselves are not designed to guarantee the comfort of building occupants but to protect an occupant’s health/welfare.

Part O is demonstrated if either of the following methods are used:

  1. Simplified Method for limiting solar gains and means of removing heating
  2. Dynamic Thermal Modelling

How quickly can I have my Overheating Assessment report?

It depends on the size of your property however, on average it takes about 3-5 days to arrange an appointment.  We will require a full set of plans and window schedule to start the process.


I have been using Assessment Hive for quite some time now. I find them very friendly, efficient and would definitely recommend their services to others”.
Savvas Eracleous, E & M Solicitors


“Amazing professional service everytime! extremely friendly and helpful staff, reports are done fast and to a high standard. Here at Platinum Estates, we highly recommend this company.”
Lory Godfrey, Platinum Estates


“Amazing service each and every time we instruct! extremely friendly and helpful staff.  I had an urgent Air Test and this was carried out the next day and certificates issued that day, I cant thank you enough”
M Mehmet, Property Developer

4 simple steps when ordering from us

Get a Quote

Call us or get a free quote online. We are happy to answer any questions you have.

Book It

Once you let us know what you need your case will be assigned to one of our fully trained assessors.

Assess It

If an appointment is needed, your assessor will meet with you or any third party at the property.

Report It

When the assessments have been completed, we will send you the completed reports by email or post.

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