Our Services
Professional thermal compliance solutions using industry-leading IESVE software. Fast turnaround, competitive pricing, and expert support throughout your project.
Understanding the Methods
Part O & TM59
Part O is the building regulation. TM59 is the proven methodology we use to demonstrate compliance through dynamic thermal simulation.
Think of it this way: Part O sets the requirement, TM59 is how we prove you meet it.
TM52
CIBSE TM52 provides overheating assessment criteria for commercial buildings, ensuring occupant thermal comfort in offices, schools, and other non-residential spaces.
Used for BREEAM compliance and planning requirements.
Want to learn more? Read our detailed guide:Part O vs TM59 Explained
Detailed Service Information
Everything you need to know about our thermal compliance assessments
Part O Compliance for Residential Buildings
Ensure your development meets overheating regulations
What It Is
Part O is the UK Building Regulation for overheating in new residential buildings. We use TM59 dynamic thermal simulation to prove compliance, providing you with a comprehensive assessment and clear path to regulatory approval.
Why It Matters
Required for all new residential developments in England since 2022. Without Part O compliance, your project cannot proceed through Building Control.
What's Included:
- TM59 dynamic thermal simulation using IESVE
- Detailed overheating analysis for all habitable rooms
- Part O compliance report accepted by Building Control
- Mitigation strategies if compliance not initially achieved
- Design optimization recommendations
- Full technical support throughout approval process
What You'll Receive:
- •Full Part O compliance report
- •TM59 assessment results
- •Room-by-room temperature analysis
- •Compliance recommendations
- •Supporting technical documentation
TM52 Overheating Assessment for Commercial Buildings
Thermal comfort analysis for offices, schools, and commercial spaces
What It Is
TM52 is the CIBSE methodology for assessing overheating risk in commercial buildings. Using dynamic thermal modeling, we evaluate occupant thermal comfort and provide evidence-based design recommendations for offices, schools, retail, and other non-residential spaces.
Why It Matters
Essential for BREEAM ratings, planning requirements, and demonstrating occupant comfort in commercial buildings. Increasingly required by local authorities and sustainability consultants.
What's Included:
- TM52 thermal comfort assessment
- IESVE dynamic simulation modeling
- Occupancy and usage pattern analysis
- Detailed overheating risk reporting
- Design recommendations for compliance
- BREEAM evidence documentation
What You'll Receive:
- •TM52 assessment report
- •Thermal comfort analysis
- •Hour-by-hour temperature data
- •Pass/fail criteria evaluation
- •Design improvement recommendations
Transparent Pricing
Clear, competitive pricing based on project complexity. No hidden fees.
Basic
Perfect for small residential projects
- Up to 5 units
- Part O compliance report
- Email support
- 2-week turnaround
- Single revision included
Standard
Ideal for most developments
- 5-15 units
- Part O + TM59 if required
- Priority email support
- 1-2 week turnaround
- Two revisions included
- Design consultation call
Complex
For larger or complex projects
- 15+ units or complex geometry
- Full thermal analysis suite
- Dedicated project support
- Fast-track available
- Unlimited revisions
- Ongoing design support
Frequently Asked Questions
How long does a Part O assessment take?
Most Part O assessments are completed within 1-2 weeks from receiving all necessary project information. We also offer fast-track services for urgent projects.
What information do you need from me?
We need architectural drawings (floor plans, elevations, sections), glazing specifications, ventilation strategy, and any passive design measures. The more detail you provide, the faster we can complete the assessment.
Do you work with projects outside Leeds?
Yes! We work with projects across the entire UK. All our work is conducted remotely, so your location doesn't matter.
What software do you use?
We use IESVE (Integrated Environmental Solutions Virtual Environment), the industry-leading software for dynamic thermal simulation and building performance analysis.
Can you help if my project fails the initial assessment?
Absolutely. We provide detailed recommendations for design modifications to achieve compliance. We'll work with you to find practical, cost-effective solutions.
Is the report suitable for Building Control?
Yes, all our reports are fully compliant with UK Building Regulations and accepted by Building Control bodies across the UK.
Do you offer revisions?
Yes, all packages include at least one revision. Additional revisions may be required if significant design changes occur.
What's the difference between Part O and TM59?
Part O is the Building Regulation requirement, while TM59 is the CIBSE methodology used to assess overheating risk. TM59 is the standard method we use to prove Part O compliance for residential buildings.
Do you work with commercial buildings?
Yes! We provide TM52 overheating assessments for offices, schools, retail spaces, and other commercial buildings. TM52 is often required for BREEAM compliance and planning conditions.
Not Sure Which Service You Need?
Get in touch for a free consultation. We'll help you determine the right compliance solution for your project.