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17+ Years Industry Experience
Dedicated customer & tech support
Easy 3 step booking process
Over 17 years experience providing property surveys for all property
types.
Specialising in Overheating Calculations (TM59, TM52 & Simplified), SAP Calcs &
EPC and other related
services for your property.
Contact us for free quotes and impartial advice.
You will need TM59 Overheating Calculations if you meet the following criteria:
Are you looking for the Simplified Overheating Assessment or TM52 Overheating Calculations for commercial properties instead?
Simply request your quote using our contact form or by phone. Our customer care team will quickly get in touch during opening hours.
We will arrange an appointment with you, carry out the survey, and once completed send you an invoice.
As soon as we receive payment of the invoice, we will email your TM59 Overheating Calculation Results. We also offer corporate accounts, with survey delivery on completion and monthly billing.
If all of the rooms pass the report can be used as evidence to satisfy Building Control.
If some or all of the rooms fail, our technical team will work with you to produce suitable solutions to bring every room to a pass. Once the solutions have been successfully completed, you will receive a new report to reflect the changes.
TM52 Overheating Calculations - Designed to calculate the risk of overheating in commercial new builds. Suitable for those wanting to gain extra BREEAM credits or when applying for planning permission in a zone with additional framework targets to meet.
Simplified Overheating Assessment - Designed to assess the risk of overheating in new build dwellings in the most simple way possible, no dynamic thermal modelling involved. If the simplified calculation shows a pass then it circumvents the need for a TM59 assessment, which has otherwise been required by building regulations since 2022, for all new build residential dwellings that do not have mechanical cooling.
TM59 Overheating Assessment - Designed to calculate the risk of overheating in new build dwellings or residential types of commercial buildings (such as care homes) that do not have mechanical cooling. If a property fails the Simplified Overheating Assessment then it must move on to TM59 calcs.
All Overheating Calculations are completed by our inhouse team of new build consultants and technical team. Our team is fully trained and exceptionally experienced in new build calculations.
Overheating calculations are carried out to evaluate the risk of overheating in a building.
There are two levels of overheating calculation, simplified and complex. Properties that have a low amount of glazing in relation to wall area may be able to demonstrate compliance with a simplified calculation, so should try this first. In the event the simplified calculation shows a fail, then a TM59 calculation will need to be carried out.
For properties with a regular or large amount of glazing, it is unlikely a simplified calculation will give a pass, so these properties are best served by going straight to a TM59 calculation, avoiding the unnecessary cost of having both types of calculation carried out.
The simplified overheating calculation uses the proportion of glazed areas to floor area in each room, alongside information like location risk level, glazing orientation and ventilation, to assess whether the dwelling passes or fails.
Full information for Simplified Overheating Assessments.
The complex overheating calculation is much more in depth than the simplified overheating calcs that would have been carried out prior to requiring the full overheating calcs.
This calculation is very location specific, taking into account variables such as shading elements, other buildings, roads, as well as the maximum occupancy and the lengths and types of pipework running throughout the property.
The basic information we need to be able to provide you with a price for the survey is:
To carry out the survey we will need a range of other information, including:
Once we have provided you with a quote, if you wish to go ahead and book we will also need invoicing details and contact details for whoever will be the best person to answer any questions we may have about the build.
Use our online booking tool to quickly get a quote for your TM59 Overheating Calculations.
Our prices start from £199.95 + VAT, depending on size and complexity of the property.
A TM59 Assessment is a calculation carried out for new build dwellings to assess the risk of overheating, in line with Part O of UK Building Regulations. TM59 is the standardised approach for assessing the risk of overheating in domestic new build designs.
It uses details about the build (material specifications, windows & door information, details of the ventilation system and space/water heating systems, etc.) along with the specific location (used to take into account shading factors, roads, other buildings, etc.) and Dynamic Thermal Modelling to calculate the risk.
Since the introduction of Part O of the Building Regulations in June 2022, calculating the risk of dwellings (and residential type commercial buildings, like care homes) has been mandatory.
New dwellings should first have a Simplified Overheating Assessment carried out if it is deemed that they may be able to achieve a pass this way. If they fail that, or if it is deemed likely that a simplified calculation would fail, then they will be required to move onto having TM59 Overheating Calculations.
TM59 and TM52 are both types of overheating risk calculations. The type of overheating calculation you should use depends on the building type and end goal.
TM59 is for:
TM59 is the standardised approach for assessing the risk of overheating in domestic new build designs.
TM52 is for:
TM52 refers to the publication “TM52 Limits of Thermal Comfort: avoiding overheating (2013)”, which is a guide for completing overheating calculations for non-domestic new builds.
Overheating calculations are a desk based exercise, using the architectural drawings, specifications, and exact location, and as such no site visit is required.
Part O is a section of UK Building Regulations that came into effect in June 2022. Part O focuses on the risk of overheating when it comes to new residential buildings.
Our prices start from £199.95 + VAT, depending on size and location of the property.
17+ Years Industry Experience
Dedicated customer & tech support
Easy 3 step booking process
Every property certificate, swiftly delivered
