Retrofit Coordination (PAS 2035)

About This Service

PAS 2035 is the UK standard for domestic retrofit, setting out a rigorous, whole-house approach to improving energy efficiency in existing homes. Published by the British Standards Institution (BSI) and supported by BRE (Building Research Establishment), TrustMark and the Retrofit Academy, PAS 2035 requires that energy efficiency improvements are considered in a whole-house context—assessing building fabric, heating systems, ventilation, moisture management, occupant needs and unintended consequences before work begins. A PAS 2035 Retrofit Coordinator manages the entire retrofit process from initial assessment through to completion, ensuring that improvements are appropriate, safe, properly integrated and compliant with industry best practices. Energy Performance Direct offers Retrofit Coordination and whole-house assessment services for homeowners, landlords, housing associations and local authorities across Devon and the South West who want a structured, compliant approach to retrofit. Whether your goal is MEES compliance (meeting the Minimum Energy Efficiency Standards for rental properties), fuel poverty reduction, participation in government-funded retrofit schemes (ECO4, Social Housing Decarbonisation Fund, Local Authority Delivery), or simply creating a more comfortable, efficient home, our PAS 2035 Coordinators provide professional, evidence-based support tailored to your property, budget and priorities. PAS 2035 compliance is mandatory for most government-funded retrofit schemes and is increasingly expected by mortgage lenders, insurers and housing quality standards frameworks. The standard was introduced following concerns about poor-quality retrofit work that led to damp, mould, comfort problems, underperformance and building fabric damage. By following PAS 2035, you ensure that improvements are planned using a whole-house assessment, risks are identified and managed (such as condensation, ventilation losses or unintended thermal bridging), work is carried out by TrustMark-registered contractors with appropriate skills and insurance, and the final outcome is safe, effective and properly documented with a golden thread of quality assurance. Our Retrofit Coordination service begins with a comprehensive whole-house assessment, evaluating the property construction, condition, occupancy patterns, existing energy performance and improvement potential. We identify suitable retrofit pathways—whether fabric-first improvements (insulation, draught-proofing, glazing upgrades), heating system replacements (heat pumps, efficient boilers), ventilation improvements (MVHR, controlled trickle vents) or renewable energy installations (solar PV, battery storage)—and prioritize measures based on cost-effectiveness, risk, disruption and the occupants goals. We produce a Medium-Term Improvement Plan that sets out a phased approach to achieving improved energy performance, comfort and compliance over 5-10 years, allowing homeowners and landlords to spread investment and avoid over-commitment. Risk assessment is a core element of PAS 2035. Retrofit improvements can have unintended consequences if not properly planned: adding insulation without addressing ventilation can trap moisture and cause condensation; installing airtightness measures without controlled ventilation can worsen indoor air quality; and replacing heating systems without improving fabric can lead to comfort problems and high running costs. Our Coordinators assess these risks, recommend mitigation measures and ensure that design and installation teams understand and address potential issues before they become problems. We also work closely with the Retrofit Academy (RetrofitAcademy.org), BRE and industry specialists to stay updated on best practices, emerging risks and lessons learned from real-world retrofit projects. For traditional, solid-wall and heritage properties, we have a particular interest in breathable, natural materials and low-energy, low-technology solutions. Modern retrofit approaches often involve synthetic insulation, mechanical ventilation and high-tech controls, which may not be appropriate for older buildings with solid walls, lime mortars and inherent breathability. We advocate for natural insulation materials (wood fibre, hemp, sheep wool, cork), lime-based renders and plasters, secondary glazing (rather than UPVC replacement), and passive design strategies (thermal mass, stack ventilation, solar orientation) where appropriate. This approach aligns with Building Regulations Part L guidance and BRE best practices for traditional buildings, protecting heritage character while improving energy performance and occupant comfort. Our Retrofit Coordination service is focused on Devon, Cornwall, Somerset and Dorset, where we understand local building types (cob, stone, solid brick Victorian terraces, post-war concrete construction), climate conditions (mild, damp South West winters) and the availability of local contractors and materials. We support small-scale projects (single-dwelling improvements for homeowners or landlords) and larger schemes (housing association stock improvements, local authority fuel poverty programs). Pricing depends on the scope and complexity of the retrofit project, the number of properties, the level of coordination required and whether the project is grant-funded or privately financed. Contact us to discuss your requirements, and we will provide a tailored quote and project timeline.

What's Included

• PAS 2035-compliant whole-house assessments and improvement plans
• Risk assessment and appropriate retrofit pathways
• Coordination between retrofit assessors, designers and installers
• Support for MEES compliance, fuel poverty schemes and grant applications
• Lodgement on the TrustMark Data Warehouse (required for grant funding release)
• Focus on natural materials and low-energy, low-technology solutions where appropriate

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