Working file P1
Retrofit Assessor cost (UK 2026)
Retrofit Assessor cost (UK 2026): working anatomy of the fee line, deliverables, when mandatory.
Cost in 2026
A PAS 2035 Retrofit Assessor charges £400to£800 for a single property. The deliverable is an RdSAP energy assessment, an occupancy assessment and a condition report.
What you get back
- RdSAP file with EPC band before and modelled after.
- Occupancy assessment (vulnerable persons, heating habits).
- Condition report flagging damp, structure, services.
- Improvement Option Evaluation feeding into the MTIP.
Where to find one
The TrustMark directory and Retrofit Academy directory list PAS 2035 Assessors by region. Many Assessors trade as one-person businesses; lead times in 2026 are typically two to six weeks.
Surveyed 22 June 2026. Ofgem Q3 2026 cap applied (gas 7.33p, elec 26.11p, gas standing 29.04p). Next scheduled review 26 September 2026 (Q4 cap publication). [ref P1]
By Oliver Wakefield-Smith, Founder, Digital Signet. Corrections to oliver at digitalsignet dot com.