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Retrofit Design Services

At StepSoft Coordination Services, we provide detailed retrofit designs that help homeowners, landlords, and businesses improve energy efficiency and meet BSi PAS 2035:2023 compliance. Our expert designers create cost-effective, sustainable, and fully compliant retrofit plans.

+44 7388 889141
Retrofit coordination company

What is Retrofit Design?

Retrofit Design is the process of developing a tailored plan to improve the energy efficiency, safety, and sustainability of existing buildings in accordance with PAS 2035 standards. It involves detailed analysis and strategic planning to ensure that retrofitting measures align with the building’s structure, energy performance, and long-term sustainability goals.

PAS 2035 Compliance

Ensures all retrofit work follows BSI PAS 2035:2033 stadards.

Energy Efficiency

Identifies opportunities to reduce energy consumption and costs.

Sustainability Planning

Integrates long-term solutions to lower carbon footprint and enhance comfort.

Regulatory Compliance

Guarantees all measures are practical, safe, and fully compliant with regulations.

Our Coordination Process

Assessment & Evaluation

Collaboration with Assessors

Improvement Plan Development

Cost & Feasibility Analysis

Compliance Review & Documentation

Why Choose StepSoft for Retrofit Design

  • PAS 2035:2023 Compliant Designs
  • Experienced Retrofit Designers
  • Integration with Assessors & Coordinators
  • Energy-Saving Technology Expertise
  • Sustainable & Cost-Effective Solutions
  • ECMK & Elmhust Approved Retrofit Assessors

Benefits of Professional Retrofit Coordination

Energy Efficiency

Improve building performance and reduce energy costs.

Compliance Assurance

Designs fully compliant with PAS 2035 and regulatory standards.

Sustainable Solutions

Long-term improvements to reduce carbon footprint and enhance occupant comfort.

Let's Discuss Your Retrofit Needs

ECMK-1
Elmhurst-1
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Retrofit project management
Retrofit project management
Retrofit coordination company

Accreditations & Certifications

'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'
'Elmhurst Retrofit Coordinator TrustMark Approved'

FAQ 's

What is a Retrofit Design and when is it required?
A Retrofit Design is a tailored plan that specifies which energy efficiency measures should be installed in an existing property and how they should be safely combined. Under PAS 2035:2023, a Retrofit Design is mandatory for any funded retrofit project — including ECO4 and GBIS — that involves medium or high-risk measures such as external wall insulation or loft insulation paired with other works. StepSoft produces designs that account for ventilation, moisture risk, and thermal performance.
 

A StepSoft Retrofit Design includes a review of the Retrofit Assessment data, specification of suitable energy measures, U-value targets, ventilation strategy, moisture and condensation risk review, and a Medium-Term Improvement Plan (MTIP). All designs are produced in line with BSI PAS 2035:2023 and are audit-ready for TrustMark lodgement and scheme compliance checks.

Retrofit Designs at StepSoft are produced by ECMK and Elmhurst-approved retrofit professionals who hold qualifications aligned with PAS 2035. The team is also supported by MCIOB accreditation, ensuring designs meet both technical and regulatory standards. This means your documentation will withstand scheme audits and TrustMark reviews.
 
Retrofit Design is the process of specifying which measures to install and how to combine them safely — it is a technical document. Retrofit Coordination is the management role that oversees the entire project from assessment through to installation and TrustMark lodgement. Both roles are required under PAS 2035, and StepSoft provides both services, often in an integrated package.
 
Yes. StepSoft provides PAS 2035-compliant Retrofit Design specifically for ECO4 (Energy Company Obligation) and GBIS (Great British Insulation Scheme) funded projects. The designs meet the documentation and evidence requirements set by scheme administrators and managing agents, helping installers and contractors achieve fast, compliant approvals.
 
Yes — this is a critical part of the process. Adding insulation without addressing ventilation can increase condensation and damp. StepSoft’s Retrofit Designs always include a ventilation strategy assessment and condensation risk review to ensure that measures such as cavity wall or loft insulation do not cause unintended moisture problems. This is a core PAS 2035 requirement.
 
Turnaround times depend on project complexity, but StepSoft aims to deliver Retrofit Designs efficiently to keep your project on schedule. Contact the team on 073 8888 9141 or at info@stepsoft.co.uk to discuss your timeline. Urgent requests can often be accommodated, especially for managing agents handling multiple properties.
 
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+44 7388 889141