Retrofit & Net Zero
End-to-end PAS2035 retrofit coordination, Home Energy Model assessment and fabric-first decarbonisation strategies. From assessment to installation, we ensure every project is compliant, fundable and delivers genuine energy performance improvements.
Retrofit that delivers real outcomes, not just compliance.
We provide end-to-end PAS2035 retrofit coordination — ensuring every project is compliant, fundable and delivers genuine energy performance improvements for residents. From whole-dwelling assessment through to post-installation monitoring, we manage the full retrofit lifecycle.
With the Home Energy Model (HEM) replacing EPC methodology from 2027, we assess properties against four headline metrics — fabric, heating, smart readiness and energy cost — so you can plan retrofit investment against the standard that will define the next decade of housing regulation.
Every project includes
The PAS2035 retrofit process.
PAS2035 is the retrofit standard that ensures energy efficiency improvements are properly designed, installed and monitored. We follow the full five-stage process to guarantee compliance and performance.
Retrofit Assessment
Whole-dwelling assessment including fabric, ventilation, heating and energy systems — the foundation of every PAS2035 project.
Improvement Plan
Medium-term improvement options evaluated against HEM metrics, EPC targets and funding eligibility to prioritise measures.
Design & Specification
Fabric-first specification with U-value targets, ventilation strategy and heating system design ready for installation.
Oversight & Monitoring
Installation oversight, resident engagement and post-retrofit monitoring to verify performance and PAS2035 compliance.
All retrofit work complies with PAS2035:2023, TrustMark requirements and relevant Building Regulations.
What you get back.
Decarbonisation
CO₂ reduction modelling with fabric-first measures that deliver genuine, lasting carbon savings — not just paper improvements.
HEM Readiness
Home Energy Model headline metrics — fabric, heating, smart readiness and cost — benchmarked against 2027 targets.
Funding Secured
SHDF, ECO and grant application support that maximises funding eligibility and keeps projects commercially viable.
Resident Engagement
Full resident engagement throughout the retrofit process — essential for PAS2035 compliance and real-world performance.
Ready to get started?
Access the Gaia Energy Ltd portal, download the full brochure, or watch the presentation to see how we deliver complete property intelligence.