Most commercial video systems overwrite themselves. A hotel, a parking structure, a transit platform or a campus building typically holds recorded footage for two to four weeks, and then the drive reuses the space. That window closes long before a survivor has decided whether to report, and usually long before a lawyer has been retained. Nobody destroys anything; the system does exactly what it was configured to do. This is why the first useful step in a premises assault case is often a preservation letter rather than a complaint — a written demand that the property owner hold the recordings, the access‑control logs, the staffing schedules and the incident reports for the relevant hours. Those records tend to answer the questions that decide the case: whether the lock worked, whether anyone was posted, whether something similar had happened before, and what the owner did about it. Sent in the first weeks, that letter costs nothing. Sent in the third month, it usually arrives after the evidence has already been written over.
Nobody destroys it. The system reuses the space.
A hotel corridor, a parking structure, a transit platform, a campus building: these systems are sized to hold a few weeks of footage and then write over the oldest of it. Two to four weeks is typical. Nothing about that is sinister — it is a storage decision made years earlier by someone who was not thinking about anyone’s case.
The consequence is still severe. National surveys of crime victimization consistently find that a large share of sexual assaults are never reported to police at all, and reporting that does happen often happens later rather than immediately (Bureau of Justice Statistics). A survivor deciding over a month whether to come forward is behaving normally. The recorder is not built for normal.
A preservation letter comes before a complaint
The first genuinely useful legal step in a premises assault case is often not a lawsuit. It is a written demand that the property owner and its security contractor retain specific material, delivered while that material still exists.
- All recorded video from named cameras across a stated date and time range — plus the system’s retention settings and camera map
- Access-control and key-card logs, elevator logs, and any guest or visitor records
- Incident reports, security logs, and dispatch or radio recordings from the shift
- Guard post orders, patrol schedules, and the actual staffing roster for that night
- Prior incident history at the property — the record that establishes what the owner already knew
- Work orders for lighting, locks, gates and cameras, including anything reported broken and not fixed
Prior incidents are usually the case
Premises liability rarely turns on the assault itself, which the owner did not commit. It turns on foreseeability and reasonable security: what had happened at this property before, what the owner knew about it, and what it did in response. That record — incident logs, police call history, internal emails about crime in the garage — is the part most often still available months later, and the part most worth asking for first.
What the rules do about evidence that is gone
Federal courts address lost electronically stored information under Rule 37(e) of the Federal Rules of Civil Procedure. The rule matters less for its penalties than for its trigger: it applies to information that should have been preserved in the anticipation or conduct of litigation and was lost because reasonable steps were not taken. Arizona’s civil rules take a comparable approach in state court (Arizona Rules of Civil Procedure).
The practical reading is uncomfortable but useful: the duty to preserve generally attaches when litigation is reasonably anticipated. A notice letter is one of the clearest ways to make that moment provable — and it is far easier to argue about a company that ignored a letter than about footage that expired before anyone wrote one.
The strongest evidence in a premises case is often the record of what the owner already knew — and that record does not overwrite itself.
If you are still deciding
You do not have to decide whether to file anything in order to preserve evidence. Those are separate choices, and only one of them has a deadline set by a hard drive. A conversation that results in a preservation letter this week costs a survivor nothing and keeps every other option open — including the option to do nothing at all.
This article is general information about how these cases work. It is not legal advice, it does not create an attorney-client relationship, and no two claims are alike. If something here sounds like your situation, the useful next step is a conversation about the facts.
