People eventually move out of rental properties. That’s just the way the business works. You need to know when to start looking for new tenants so your property is never left vacant for too long.
Ideally, you want the next tenants to move in the day your property is available to avoid any loss of income. It would be great if you could advertise your property, show tenants through, screen the tenants, sign a lease, and move your tenants in, all within 24 hours. But most tenants need to give notice to vacate their current rental home before moving into your place. This is generally 3 to 4 weeks, depending on the state your new tenants are in.