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Knowledge Hub

Practical retrofit knowledge.
For everyone in the supply chain.

Guides, references and practical resources covering PAS2035, funding schemes, project management, resident engagement and retrofit technical considerations.

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most relevant to you.

Getting Started

New to retrofit? Start here. What retrofit is, why it matters and how the PAS2035 process works from beginning to end.

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Project Management

Managing the stages, roles and key decisions in a PAS2035 retrofit project — from procurement through to TrustMark lodgement.

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Technical Considerations

Housing stock types, construction constraints, ventilation, fabric first — the technical foundation of sound retrofit planning.

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Resident Engagement

Strategy, communication and consent — why resident engagement is the most important factor in retrofit programme success.

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Delivering at Scale

Consortia, procurement frameworks, supply chain management and quality assurance across large-scale retrofit programmes.

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Funding Schemes

WH:SHF, WH:LG, Boiler Upgrade Scheme — a practical guide to the main UK retrofit funding schemes and how to access them.

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All Guides

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knowledge library.

Project Management
Medium Term Plans: What They Are and How to Use Them
Medium term plans bridge the gap between strategic vision and day-to-day delivery. Learn how to develop and implement effective 3-5 year plans for construction and retrofit projects.
5 min readRead guide →
Technical
Air Source Heat Pumps: Is Your Property Suitable?
Assess your property's suitability for air source heat pumps by evaluating space, insulation, noise tolerance and installation requirements before committing to this low-carbon heating solution.
5 min readRead guide →
Getting Started
Getting Started in Retrofit: A Practical Introduction
What retrofit is, why it matters for the UK housing stock, and how the PAS2035 process works from initial assessment through to TrustMark lodgement.
6 min readRead guide →
Project Management
Managing a Retrofit Project: Stages, Roles and Key Decisions
How to manage each stage of a PAS2035 retrofit project effectively — from procurement and assessment through to installation oversight and TrustMark lodgement.
7 min readRead guide →
Technical
Retrofit Technical Considerations: Stock, Construction and Constraints
Housing stock types, construction constraints, ventilation strategy, fabric first principle and planning constraints — the technical foundations of sound retrofit planning.
6 min readRead guide →
Resident Engagement
Engaging Residents in Retrofit: Strategy, Communication and Consent
Why resident engagement is one of the most critical factors in retrofit success, and how to build a communication and consent strategy that actually works.
5 min readRead guide →
Scale Delivery
Delivering Retrofit at Scale: Consortia, Procurement and Supply Chain
Moving beyond pilots to large-scale delivery — consortium structures, procurement frameworks, supply chain capacity and quality management across complex programmes.
6 min readRead guide →
Funding
UK Retrofit Funding: A Practical Guide to the Main Schemes
Warm Homes: Social Housing Fund, Warm Homes: Local Grant, Boiler Upgrade Scheme — who can access each scheme, what it funds and what it requires.
7 min readRead guide →
Technical
The Fabric First Approach: Principles, Benefits and Application
The government-recognised strategy for retrofit — minimise energy demand through the building fabric before installing technology. What it means, why it matters and how to apply it.
5 min readRead guide →
Project Management
Costing Retrofit Projects: A Practical Guide
Capital vs admin costs, grant scheme cost caps, commonly underestimated costs and how to structure a robust retrofit project budget that survives contact with reality.
7 min readRead guide →
Project Management
Monitoring and Evaluation in PAS2035: What Is Required and Why It Matters
M&E is mandatory for all publicly funded retrofit. This guide explains the three levels — basic, intermediate and advanced — and why planning must start at Stage 1, not after installation.
6 min readRead guide →
Getting Started
The Hierarchy of Retrofit Compliance: PAS2035, PAS2030, MCS and TrustMark
How the interlocking standards and accreditation schemes that govern UK retrofit relate to each other — and what happens when any part of the compliance hierarchy is missing.
5 min readRead guide →
Funding
Minimum Energy Efficiency Standards: What Landlords Need to Know
MEES requirements, exemptions, how they apply to private and social landlords, and how retrofit addresses compliance — including what EPC ratings do and do not tell you.
5 min readRead guide →
Getting Started
Property Data in Retrofit: What You Need and Where to Find It
The types of property data needed for retrofit, where housing providers hold it, how to work with incomplete data, and why data quality determines programme quality.
5 min readRead guide →