About PAS
A voluntary standard that brings clarity to the appliances and systems inside a UK home.
Why we built this
When a UK home changes hands, the buyer inherits dozens of appliances and systems — a boiler, a hot water cylinder, an oven, a hob, a washing machine, smoke alarms, possibly solar panels or an EV charger. Most are nearing the end of their service life. Most have no service records. None of them feature on the standard property survey.
Buyers either pay for separate professional inspections of each item (rare and expensive) or accept the risk and discover the truth after exchange. Neither is a good outcome.
PAS gives sellers, agents and landlords a structured, auditable way to declare what is in the property today and how confidently that can be supported. The result is a clearly graded report — A, B, C, or U — that the buyer can use as part of their decision.
How the grade works
Each appliance is scored across six published components: age, service history, reported condition, documentation, warranty status, and known issues. The components combine into a 0–100 score, which becomes a letter grade. Crucially, confidence (how well the score is supported by evidence) is shown separately from the grade itself, so weak data can never hide behind a high score.
The full methodology is locked at the moment your report is issued. Updates to the methodology never retroactively rewrite history.
What PAS is not
PAS is voluntary and not a regulated qualification. We do not inspect, certify, guarantee, approve or independently verify the appliances. Our role is to give buyers, agents, and sellers a structured, evidence-led summary so they can make decisions on facts rather than guesses.
Trajectory
Energy Performance Certificates began as a voluntary recommendation and are now a mandatory part of every UK property listing. PAS is on the same trajectory. Voluntary today, expected tomorrow.