Damp and mould arguments usually arrive with a file and a photograph, and by then the room has changed. The wall has been repainted. The gutter has been cleared. The tenant has moved out and taken the only account of how the place felt in February with them.
An inventory cannot fill that gap on its own. It is not a building survey, and the clerk at the door is not a damp specialist. What a good record can do is fix a moment: this mark, this size, this room, this date, and what the people standing in the room said about it.
What a property record can and cannot do
Damp and mould conversations tend to start late. By the time anyone is studying photographs, the evidence has often gone. An inventory is not a building survey and a clerk is not a damp specialist, so the record does something narrower than people hope and more useful than they expect.
It does not settle who carries the cost. It gives whoever has to consider that question something solid to read, written down at the time rather than reconstructed afterwards.
Describing what is there, not naming a cause
A clerk can record a dark tide mark across a bedroom ceiling, black spotting around a window reveal, paint lifting at skirting level, a musty smell in a cupboard, or condensation running down a pane at the time of the visit. Each of those is an observation, and observation is what a property report is for.
Damp is a diagnosis. So are penetrating damp, rising damp and condensation caused by the occupants. Each of those names a cause, and naming a cause takes training, instruments and access to parts of the building that a visual inspection never reaches. Causation language in a report can be quoted back years later as though it were a finding.
The better method is unglamorous. Describe the sign, place it precisely, size it, photograph it with something for scale, and note the conditions in the room that day. Heating on or off. Windows open or shut. Extractor running or silent. Furniture tight against the wall or standing clear. Those are the details an investigation will ask for, and they are gone by the following week.
Ordinary living, and buildings that cannot cope
GOV.UK guidance on damp and mould is careful about a point that matters. Cooking, washing, showering, drying clothes indoors and simply breathing all put moisture into the air. In a home with working extractors, sensible ventilation and reasonable insulation, that moisture leaves. Where it cannot leave, it settles on the coldest surface available and stays there.
The two explanations lead to very different responses. If a building cannot clear the moisture that everyday living produces, the answer sits in the building: an extractor that does not run, a window painted shut, a ventilation path blocked by later building work, a gap in insulation, failed sealant, defective gutters and downpipes, or a damp proof course that has stopped doing its job. A report that mentions clothes dried indoors without recording any of those things has described a household habit rather than a property condition.
Tenants should report condensation and mould as soon as they notice either, and should use the ventilation the property provides. None of that is in doubt. What deserves scrutiny is any record that treats ordinary living as the whole explanation.
Who is responsible for what
Landlords are responsible for keeping the structure and exterior in repair, for the installations that supply water, gas, electricity and heating, and for dealing with hazards in the home. A reported damp or mould problem is expected to be investigated rather than noted and left. Local authorities have their own powers: the Housing Health and Safety Rating System is the framework they use to identify and rate hazards in homes, damp and mould among them, and an environmental health officer can inspect and require works.
Awaab's Law sets timescales for social landlords in England to investigate and fix hazards, damp and mould included. It applies to social housing. It does not currently apply to privately rented homes, so anyone relying on the detail should read current GOV.UK guidance rather than a summary written months ago.
Tenants have obligations too. Report problems, allow access for inspection and repair once proper notice has been given, and use the property as an ordinary tenant would. Letting agents sit in the middle, holding the correspondence that shows what was reported, when it reached the landlord and what followed.
None of this decides an individual case. Questions of liability and cost belong to the parties, the tenancy agreement and, where needed, proper advice.
What to capture at each stage
Before the tenancy starts
An empty property is the easiest to read. Record the ventilation as found, including whether extractor fans run, whether trickle vents are open and whether air bricks are clear of a raised patio or new landscaping. Note the sealant around baths, showers and windows, the condition of gutters and downpipes where they can be seen, and any historic staining, however faint. A photograph into the top corner of each external room takes seconds and covers the place where a mark will show first.
While the tenancy runs
An interim visit should stay visual and proportionate. Record new marks with a date and compare them against the start of the tenancy, matching the angle of the original photograph where you can. Ask what has been reported and write the answer down. Note a dehumidifier in the corner, a window propped open or a heater left running, because those details say something about conditions in the room that day. If the tenant has raised a concern in writing, record that the concern exists without trying to settle its cause at the doorstep.
At the end of the tenancy
The comparison is with the start, allowing for fair wear and tear. Staining photographed in the first month is not a new issue in the last. Staining that first appears in a photograph from year two is a different conversation. Cleaning, redecoration and any remedial work carried out during the tenancy belong in the record as well, with dates, so that a later reader can see what changed and when.
Habits that make the evidence stronger
- Photograph the same corner at every visit, from the same position.
- Place the mark: "bedroom two, ceiling, corner above the wardrobe" reads far better than "damp patch upstairs".
- Record what can be seen, felt and smelled, not what it probably means.
- Note ventilation exactly as found, including whether the fan runs and whether the vent is clear.
- Keep the tenant's own account in its own section, in their words.
- Log works carried out during the tenancy and the date they finished.
What the file is worth later
A property report will never be the whole story of a damp problem. It is the part that can be produced later, in date order, and read by somebody who was never in the room. When a landlord, a tenant or a deposit scheme needs to understand how a wall looked in March and again in November, that sequence usually does more work than any opinion about the cause.
For related reading, see [Inventory Evidence and Deposit Disputes](/knowledge/inventory-evidence-deposit-disputes), [HHSRS and Property Condition](/knowledge/hhsrs-property-condition) and [Repair and Maintenance Evidence](/knowledge/repair-maintenance-evidence).