Passport Evidence and Documents

Passport evidence is the set of documents that proves what a building was, what was planned, what was actually done and what resulted, and it is what separates a passport from a wish list. Without evidence, a roadmap stage cannot be verified, a future professional cannot trust the starting assumptions, and a buyer, funder or authority cannot check that a stage was completed as described. Evidence therefore needs to be collected during the project, when photographs, readings and certificates are available, not reconstructed years later from memory or from a contractor invoice alone.

A complete evidence pack typically includes the starting survey and assessment, the passport roadmap itself, stage designs and specifications, consents and approvals, product data sheets, installation and commissioning records, photographs of work before it is covered, warranties and guarantees, and post-stage measurements or reassessments. Each item has a different role, and together they form an audit trail from plan to result.

Photographs deserve particular attention, because they capture details that paperwork cannot: wall construction revealed when plaster is removed, insulation continuity at junctions, pipework and duct routes before floors are closed, and frame-wall sealing before trim is fitted. Photographs should be dated, labelled by room and stage, and stored with the passport, not left on a single phone or camera, since a photograph that cannot be found when needed is not evidence in any practical sense.

Commissioning and measurement records are the second pillar: heating and ventilation commissioning sheets, airtightness test results, EPCs before and after, meter readings and temperature or humidity logs, all show whether a stage performed as designed. A stage without commissioning records may have been installed well, but it cannot be proved to have been, and a defect that commissioning would have caught may go unnoticed until the next stage.

Start a building file before the passport is commissioned, with existing surveys, EPCs, past work records, photographs and warranties, and agree with the passport author and each contractor who will add to the file, what documents each stage must produce, in what format and by when. Check that file after each stage, while contractors are still engaged, and chase any missing document promptly, since a missing commissioning sheet is far easier to obtain in the week after installation than a year later.

Also agree where the file lives, who can access it, how it transfers on sale, and whether a digital copy is backed up, since a single paper file in a loft is vulnerable to loss, damp and fire, while a single digital file on one device is vulnerable to failure and format obsolescence.

In the EU, passport evidence requirements follow national scheme design under the EPBD recast, with member states differing on which documents must be held, whether evidence is lodged in a register or logbook, and how long it must be retained. Some schemes may require digital evidence linked to a national platform, while others may accept a paper pack held with the building, so the scheme rules for the property should be checked.

In the UK, retrofit evidence under PAS 2035, building regulation certificates, EPC records and guarantee documents follow UK-specific rules, with no single EU passport evidence register. UK homeowners should therefore build a complete home file on the PAS 2035 and TrustMark model, even where no formal passport exists, since that file serves the same audit purpose.

A frequent mistake is collecting invoices but not specifications, so the file proves money was spent but not what material, thickness or system was actually installed. Another is photographing finished rooms but not covered work, so insulation, pipework and junction details, the parts most likely to be disputed later, have no visual record at all.

A third mistake is storing evidence only in email, scattered across inboxes and contractor accounts, so a future owner or professional cannot assemble the history without contacting every previous contractor. A single, indexed building file, with a contents list, prevents that fragmentation.

Keep the indexed building file with its contents list, all surveys, designs, consents, product sheets, commissioning and measurement records, dated and labelled photographs, warranties and stage updates, in both paper and backed-up digital form where possible. Those papers are the passport evidence, and they should stay with the building.

Ask a qualified passport author and each contractor: what evidence will this stage produce, in what format, by when, and where will it be filed, and what happens to the file on sale. Evidence answers, agreed before work, show a passport that can be audited.