The UK’s green energy revolution is creating thousands of new opportunities and retrofit assessor jobs are right at the heart of it. With the government’s ambitious net-zero targets, millions of British homes need energy efficiency upgrades. Before any improvement work can begin, a qualified retrofit assessor must evaluate the property.
Whether you’re a professional exploring a career change, a tradesperson looking to upskill, or a company trying to understand what retrofit assessors do this guide covers everything. And if you already work in retrofit and need expert design support, StepSoft’s retrofit design services are built to complement your work every step of the way.
What Is a Retrofit Assessor?
A retrofit assessor is a trained professional who inspects existing residential or commercial buildings and evaluates their current energy performance. Under the PAS 2035:2023 framework, the UK’s gold standard for domestic energy retrofit, a retrofit assessment must be completed before any improvement measures (like insulation, heat pumps, or solar panels) are installed.
The assessor’s report feeds directly into the retrofit design process, which is then handled by a retrofit designer (or in some cases the same person with additional qualifications). This means retrofit assessors are the essential first link in a chain of compliant, effective energy upgrades.
Key Responsibilities of a Retrofit Assessor
- Conducting on-site inspections of existing buildings
- Collecting data on the fabric, heating systems, ventilation, and energy use
- Producing a Retrofit Assessment report in line with PAS 2035:2023
- Identifying risks such as damp, condensation, and structural issues
- Recommending energy improvement measures based on evidence
- Working alongside retrofit coordinators and designers on medium or large projects
Why Demand for Retrofit Assessor Jobs Is Growing Fast
The UK government has committed to making homes net-zero ready by 2050. Schemes like the Energy Company Obligation (ECO4), the Great British Insulation Scheme (GBIS), and Social Housing Decarbonisation Fund (SHDF) all require PAS 2035-compliant retrofit work, which means they all need qualified retrofit assessors.
According to industry estimates, the UK needs to train and deploy tens of thousands of retrofit professionals over the coming decade. That makes now an excellent time to enter this sector , and an excellent time for retrofit businesses to align their services with compliant partners like StepSoft.
How to Qualify for Retrofit Assessor Jobs in the UK
To work as a qualified retrofit assessor in the UK, you need to be accredited through a recognised scheme. The main accreditation bodies are:
- Elmhurst Energy – Offers the Level 3 Award in Retrofit Assessment
- ECMK – One of the UK’s leading retrofit accreditation providers
- Stroma Certification – Provides assessor training and accreditation
- Quidos – Provides accreditation for energy assessors moving into retrofit
To become a retrofit assessor, you’ll typically need to:
- Hold a relevant background in construction, surveying, or energy assessment
- Complete an accredited training course (often a Level 3 qualification)
- Pass a knowledge assessment or practical examination
- Register with TrustMark under the retrofit framework
- Maintain CPD (Continuing Professional Development) to stay current
StepSoft note: StepSoft is accredited by both Elmhurst Energy and ECMK, the same bodies that assess retrofit assessors. That means when you work with us on retrofit design, you’re working with a team that understands exactly what an assessor’s report looks like and how to use it properly.
Where to Find Retrofit Assessor Jobs in the UK
Retrofit assessor jobs are advertised across a range of platforms. Here’s where to look:
Job Boards
- Indeed.co.uk – Search ‘retrofit assessor’ for live vacancies
- LinkedIn – Many installers and coordination companies post here
- Reed.co.uk – Growing number of green energy roles
- Totaljobs.com – Strong coverage of construction and trades
- Green Jobs Board (greenjobsboard.uk) – Specifically focused on sustainability roles
Industry Networks
- Elmhurst Energy job board for accredited assessors
- ECMK member network and partner companies
- TrustMark registered businesses needing assessors
- Retrofit Academy – Offers training and often connects graduates with employers
- Local authority retrofit programmes – Many councils are running large-scale retrofits under government funding
Retrofit Assessor Salary: What Can You Expect?
Salaries for retrofit assessor jobs vary based on experience, location, and whether you’re employed or self-employed. Here’s a general guide:
- Entry-level / newly qualified: £25,000 – £32,000 per year
- Experienced assessors: £32,000 – £45,000 per year
- Self-employed / freelance: £200 – £400 per day depending on contract type
- Senior or specialist assessors (large-scale schemes): £45,000+ per year
Many retrofit assessors also take on additional qualifications to become retrofit coordinators or move into retrofit design, which opens the door to higher earnings and more senior roles.
Retrofit Assessor vs Retrofit Designer: What’s the Difference?
A common question from people exploring retrofit assessor jobs is: how does this role relate to retrofit design? Here’s a simple breakdown:
- Retrofit Assessor: Inspects the property, gathers data, identifies risks, and produces the assessment report. This is the diagnostic stage.
- Retrofit Designer: Takes the assessor’s report and develops a detailed technical plan for the improvement work. This is the planning stage.
- Retrofit Coordinator: Manages the overall project from start to finish, ensuring everything is PAS 2035 compliant and all parties are aligned.
At StepSoft, we specialise in the design and coordination stages. We work directly from retrofit assessment reports produced by qualified assessors to build fully PAS 2035-compliant retrofit designs. If you’re a retrofit assessor looking for a reliable design partner or an installer who needs the full chain covered , StepSoft’s retrofit design service is where to start.
Types of Retrofit Assessor Jobs Available
Not all retrofit assessor jobs look the same. Depending on your experience and preferences, you could find yourself working in one of these settings:
1. In-House / Employed Roles
Many larger retrofit companies, housing associations, and local authorities employ assessors directly. These roles offer stability, a regular salary, and access to large-scale project pipelines.
2. Freelance / Self-Employed
Many accredited assessors operate as sole traders, taking on contracts from retrofit coordinators, installers, or funding scheme operators. Day rates tend to be higher, but income can be variable.
3. Social Housing & Local Authority Programmes
The Social Housing Decarbonisation Fund (SHDF) and other government schemes are creating demand for assessors to work across entire housing estates. These tend to be longer-term contracts with consistent workloads.
4. ECO4 Scheme Work
The Energy Company Obligation (ECO4) scheme funds retrofit measures for fuel-poor and low-income households. Retrofit assessors play a central role in qualifying properties and producing the evidence needed for ECO submissions.
Key Skills Employers Look for in Retrofit Assessors
- Strong knowledge of building fabric, construction methods, and energy systems
- Familiarity with PAS 2035:2023 and related standards (BSI, TrustMark)
- Ability to use energy assessment software (e.g. RdSAP, DEA tools)
- Excellent written communication for producing clear assessment reports
- Attention to detail, small errors in assessments can have big consequences downstream
- Interpersonal skills for working with homeowners, coordinators, and installers
- Physical fitness and comfort with on-site inspections (lofts, crawl spaces, etc.)
How StepSoft Supports Retrofit Assessors and the Wider Industry
Once an assessor completes their report, the retrofit design phase begins. This is where StepSoft comes in.
At StepSoft Coordination Services, we provide fully PAS 2035:2023-compliant retrofit designs that translate assessment findings into actionable, technically sound improvement plans. Our services are used by:
- Retrofit installers who need compliant designs before work can start
- Housing associations managing large-scale upgrades
- ECO4 and GBIS delivery partners who need rapid turnaround
- Retrofit assessors who want a reliable design partner to pass work on to
- Landlords and property managers seeking to improve EPC ratings
Our team includes ECMK and Elmhurst-approved retrofit assessors and designers — meaning we understand both sides of the process inside out. Whether you need a single retrofit design or support across a multi-property scheme, StepSoft delivers technically accurate, fully compliant solutions.
Frequently Asked Questions About Retrofit Assessor Jobs
Do I need to be an EPC assessor to become a retrofit assessor?
Not necessarily, but many retrofit assessors come from an EPC or energy assessment background. Some accreditation bodies require prior experience in construction or surveying. Check the entry requirements for your chosen accreditation scheme.
Is a retrofit assessor the same as a retrofit coordinator?
No. A retrofit assessor evaluates the property and produces the assessment report. A retrofit coordinator manages the overall project, ensuring all measures are implemented safely and in compliance with PAS 2035. Some professionals hold both qualifications.
Can I work as a retrofit assessor alongside my existing job?
Yes — many people start out doing retrofit assessments on a part-time or freelance basis. Once demand builds, many transition to full-time. The flexibility of self-employment makes this a popular path.
How does retrofit design follow on from my assessment work?
Once you submit the assessment report, a retrofit designer uses your findings to create a technical improvement plan. If you need a trusted design partner to handle that next stage for your clients, StepSoft offers rapid, PAS 2035-compliant retrofit design services that integrate directly with assessor outputs.
Ready to Take the Next Step in Retrofit?
Whether you’re a retrofit assessor looking for a design partner, an installer who needs compliant retrofit designs, or an organisation planning a large-scale upgrade programme — StepSoft is here to support you.
Our retrofit design service is fully PAS 2035:2023 compliant, backed by ECMK and Elmhurst accreditation, and trusted by clients across the UK. We work quickly, accurately, and in close collaboration with assessors, coordinators, and installers.
Call us: 073 8888 9141
Email: info@stepsoft.co.uk