Meet the Assessor
Ian Kay
Elmhurst Accredited On Construction Domestic Energy Assessor (OCDEA)
Prefer to talk to someone? Call 0333 567 9010.
Builder Turned Energy Assessor
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Before becoming an energy assessor, I spent years working on building sites. I've laid foundations, built walls, fitted insulation, and dealt with the day-to-day realities of construction. That hands-on experience shapes how I approach SAP calculations today.
When I review drawings and specifications, I'm not just looking at numbers on a screen. I understand what actually happens on site, which details are easy to get right, and where things commonly go wrong. This means the advice I give is practical and achievable, not theoretical targets that fall apart in the real world.
Qualifications & Accreditation
OCDEA
On Construction Domestic Energy Assessor · Since 2025
Elmhurst accredited for SAP calculations on new builds. Design stage and as-built assessments, BREL reports, EPC lodgements.
TM59 DesignBuilder DSM for Part O Compliance
Part O Assessor · Since 2025
DesignBuilder trained to complete compliant TM59 Dynamic Thermal Modelling for compliance with Part O of the Building Regulations.
Level 3 Certificate in Domestic Energy Assessment
Domestic Energy Assessor · Since 2022
EPCs for existing dwellings using RdSAP. Covers properties being sold or let where an EPC is legally required.
Level 4 Diploma In Non Domestic Energy Assessment
Non-Domestic Energy Assessor · Since 2023
EPCs for commercial and non-domestic buildings. Covers offices, retail, industrial and mixed-use properties. Level 3, 4 & 5 buildings.
Retrofit Assessor
TrustMark Registered · Since 2025
Qualified to assess existing homes for energy improvement measures under PAS 2035 retrofit standards.
Heat Loss Assessor
MCS Certified · Since 2023
Room-by-room heat loss calculations for heat pump installations. Required for MCS-certified renewable heating systems.
Construction Experience
Hands-on Building Background · Since 2015
Years of practical experience on building sites. Foundations, walls, insulation, roofing - the full build process.
How I Work
I work directly with architects, builders, developers and homeowners across England, Wales and Scotland. Because SAP calculations are done from your drawings and specifications, most projects don't need site visits, which keeps things straightforward and costs predictable.
My aim is simple: get your project signed off without unnecessary delays or surprises. That means clear communication about what's needed, honest feedback when specifications need adjusting, and practical solutions when buildings are close to failing compliance.
I don't just hand over a pass/fail result and disappear. If your dwelling fails, I'll explain why and suggest cost-effective adjustments that work on site as well as on paper. The goal is always to find the most sensible path to compliance, not to gold-plate specifications unnecessarily.
Services
SAP Calculations
Part L compliance for new builds, conversions, and extensions that trigger the glazing rule. Design stage and as-built assessments with BREL reports.
SAP Calculations →Overheating Assessments
Part O compliance using the simplified method or full TM59 dynamic simulation modelling where required.
Part O Assessments →Get In Touch
If you've got a project that needs SAP calculations or you're not sure what compliance route applies to your build, get in touch. I'm happy to answer questions and give you a clear idea of what's involved before you commit to anything.
Ready to get your SAP Calculation?
All SAP calculations completed by an Elmhurst-accredited OCDEA and accepted by Building Control nationwide.