Keep a maintenance file for each rental with a checklist for landlords and property managers. Collect work orders, vendor invoices, warranty documents, permit or inspection records, HVAC and safety-device service logs, and tenant-reported issue tickets. A complete file supports habitability responses, insurance claims, and turnover planning. This is a document list, not a repair how-to. Confirm local habitability and smoke/CO device rules; this is not legal advice.

Include tenant-reported description and completion notes.
Match each invoice to a work order.
Model numbers help warranty and insurance claims.
Install or test dates and device locations.
Electrical, plumbing, structural, or HVAC replacements.
Useful for insurance and deposit disputes.
Update when you swap a unit.
Tie spend to the property operating statement.