Ian Kay
Elmhurst-accredited On Construction Domestic Energy Assessor (OCDEA) and the assessor behind SAPgen.
- Former builder turned energy assessor
- Elmhurst-accredited OCDEA
- SAP Calculations for new builds, conversions and extensions
- Elmhurst Accredited
- Fully Insured
- 100s Projects Delivered
- FHS Ready
Builder Turned Energy Assessor
Before becoming an energy assessor I spent years working on building sites. I have 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 am 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. That means the advice I give is practical and achievable, not theoretical targets that fall apart in the real world.
Connect with me on LinkedIn.
Qualifications and Accreditation
- OCDEA (On Construction Domestic Energy Assessor), accredited by Elmhurst Energy in 2025. SAP Calculations for new build dwellings, including Design Stage and As-Built assessments, BREL reports and EPC lodgements.
- Level 3 Certificate in Domestic Energy Assessment, Elmhurst Energy, 2022. EPCs for existing dwellings using RdSAP, covering properties being sold or let. View certificate.
- Level 4 Diploma in Non-Domestic Energy Assessment, Elmhurst Energy, 2023. EPCs for commercial and non-domestic buildings such as offices, retail and industrial units. View certificate.
- Retrofit Assessor, TrustMark registered, 2025. PAS 2035 assessments of existing homes for energy improvement measures. View certificate.
- MCS Certified Heat Loss Assessor, MCS, 2023. Room-by-room heat loss calculations for heat pump installations. View certificate.
SAP Calculations are the core service. The wider accreditations mean I understand how a dwelling performs across its whole life, from construction through to how it is assessed once occupied.
How I Work
I work directly with architects, builders, developers and homeowners across the UK. Because SAP Calculations are done from your drawings and specification, most projects do not need a site visit, 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 is needed, honest feedback when a specification needs adjusting, and practical solutions when a building is close to failing compliance.
I do not just hand over a pass or fail result and disappear. If your dwelling fails, I explain why and suggest cost-effective adjustments that work on site as well as on paper. The goal is always the most sensible path to compliance, not gold-plating specifications unnecessarily.
Got a Project That Needs SAP?
If you are not sure which compliance route applies to your build, get in touch and I will give you a clear idea of what is involved before you commit.