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Retrofit OS

Retrofit OS

by Retrofit OS

Retrofit management and compliance platform

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Onye Dike
Updated by Onye Dike on October 6th, 2026
Retrofit OS is a UK retrofit management and compliance platform for organizations delivering residential energy-efficiency and decarbonization programmes. It connects activities that are often handled through separate spreadsheets and applications, taking projects from appointments and property surveys through installation, evidence review and TrustMark-ready submission. The software is built particularly around PAS 2030 and PAS 2035 requirements and UK-funded retrofit programmes. Its target users include retrofit assessors, coordinators, contractors, installers, social landlords and local authorities. Rather than simply modelling building performance, Retrofit OS helps manage the operational, documentary and compliance workflows required to deliver retrofit programmes at scale.

Available Other Features

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Pricing

Starting Price
No data available
Options
  • Monthly Subscription

Available Since

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Deployment Options

  • Web Browser (Cloud - Based)

Good Option For

  • Freelancers (1 person company)
  • Microbusiness (2-10 people)
  • Small Business (11-50 people)
  • Medium Business (51-250 people)
  • Large Business (250+ people)

Deep dive

Core Features

Retrofit OS provides an end-to-end workflow for retrofit delivery, keeping property information, site evidence, documentation and compliance activities within a common system. It supports individual projects as well as large portfolios spanning multiple properties, clients and funding schemes. Key capabilities include:

  • Appointments & Project Scheduling: Teams can schedule visits and allocate work to assessors, coordinators and installers, maintaining consistent appointment information between office and field teams.

  • On-Site Surveys & Assessments: Mobile-friendly workflows capture property information, technical assessments, photographs, signatures and supporting evidence, including date-, time- and GPS-stamped records.

  • PAS Compliance Management: Structured workflows support PAS 2030 and PAS 2035, with compliance checks, pass/fail visibility and standardized documentation helping teams identify incomplete evidence before submission.

  • Installation & Evidence Management: Contractors can book installations, route work to fitting teams and collect photographic, documentary and certification evidence from site.

  • TrustMark Lodgement Support: Retrofit OS prepares submission-ready evidence packs and supports TrustMark lodgement workflows, including consistency checks between site evidence and PAS documentation.

  • Programme Reporting & Portfolio Visibility: Users can monitor jobs, milestones and evidence completeness across programmes and export information for governance, partners and audit-ready reporting.

Closing Insights

Retrofit OS evolved from ECO Surv, which had supported UK retrofit and energy-efficiency delivery for more than a decade. The business adopted the RetrofitOS identity in July 2026, reflecting its expansion beyond ECO into other areas like social housing decarbonization, PAS compliance, and renewable and low-carbon measures. Clients include Grant Store and A&M Energy Group, and The Guinness Partnership.

The platform is available through Essentials, Professional and Enterprise plans, with pricing is determined by modules, job volume and programme scope rather than user count

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