Welcome to The Retrofit Lab
We support high-quality, compliant retrofit projects nationwide by providing expert coordination, assessment, and design in line with PAS 2030 and PAS 2035. In response to UK climate targets, we empower installers with technical guidance and simplified processes, enabling them to deliver safe, sustainable energy efficiency improvements for homes and communities. Our Services
-
An Energy Performance Certificate (EPC) rates a property's energy efficiency and provides recommendations to reduce energy use and lower bills—essential for selling, renting, or retrofitting a home.
-
A Retrofit Assessment includes a detailed survey of the home's condition, energy performance (EPC), occupancy patterns, and ventilation, forming the foundation for a tailored and compliant retrofit plan.
-
A Retrofit Design outlines the specific energy efficiency measures tailored to a property, ensuring they are technically sound, safe, and PAS 2035 compliant. Delivered by a qualified professional, such as an MCIOB-accredited designer, it ensures quality, performance, and integration across all retrofit elements.
-
A Retrofit Coordinator manages the entire retrofit project, overseeing assessments, design, installation, and compliance with PAS 2035 standards. They ensure quality, safety, and that all measures are delivered correctly—providing assurance for both clients and installers.
-
Pulse air testing measures how airtight a home is by releasing a short burst of air and monitoring pressure changes. It’s quick, non-intrusive, and helps identify air leaks—essential for designing effective, energy-efficient retrofit solutions.
-
Our full submission service handles all required documentation and evidence for energy providers and funders—ensuring smooth, compliant applications for ECO or grant-funded retrofit projects. We manage everything from assessment to lodgement, saving time and reducing risk for installers.
-
Ensure quality, compliance, and confidence on your retrofit project with our professional Site Inspection service. We provide thorough on-site assessments to verify installation standards, identify defects, ensure PAS 2035 compliance, and support project documentation. Ideal for homeowners, retrofit coordinators, and contractors seeking assurance at key project stages.
Packages
-
EPR Scoring and Modelling
Retrofit Assessment
Retrofit Design
Retrofit Coordination
£1625 + VAT
-
EPR Scoring and Modelling
Retrofit Assessment
Retrofit Design
Retrofit Coordination
Pulse Air Testing
OR
Full Submission Service
£1950+ VAT
-
EPR Scoring and Modelling
Retrofit Assessment
Retrofit Design
Retrofit Coordination
Pulse Air Testing
AND
Full Submission Service
£2200+ VAT
Delivering a complete package of services—including retrofit assessments, design, coordination, inspections, and submissions—offers installers significant value by streamlining the entire retrofit process. It removes the need to manage multiple consultants, ensures PAS 2035 compliance from start to finish, and reduces delays caused by miscommunication or incomplete documentation. This end-to-end service simplifies project delivery, improves quality assurance, and frees up the installer’s time to focus on what they do best—installing measures—while we handle the technical, regulatory, and administrative requirements.
Membership Plan
-
Receive an uncapped 15% discount from all services
-
Three month rolling contracts are available with 30 days cancellation period
-
Jump the queue and get your projects processed quicker. Guaranteed response within 24 hours
-
A single point of contact on your account - This is not an account manager this will be a certified Retrofit Assessor or Coordinator
£495 PCM + VAT
The Retrofit Lab helps UK installers deliver fully compliant, stress-free retrofit projects through a complete in-house service. We manage everything—from Retrofit Assessments and Design to Coordination and TrustMark submissions—ensuring smooth, efficient delivery to PAS 2035 standards.
Working nationally, we support ECO-funded and private projects, removing admin burdens so installers can focus on high-quality installations. With accredited experts, including MCIOB-qualified designers and Pulse air testing, we simplify retrofit and help meet the UK’s climate goals.
