A direct answer: typically, a landlord should hand over the keys to a tenant once the lease is signed and the initial payments (such as the security deposit and first month’s rent) are made, and any agreed move-in conditions or inspections are completed. In practice, many landlords specify a move-in date in the lease and provide keys on that date or immediately after the signed agreement and payment are confirmed. If there are pre-move-in tasks (repairs, cleaning, or required screenings), keys are usually given after those tasks are finished or on a mutually agreed handover date, often documented with a move-in/move-out or key acknowledgment form. Key considerations

• Lease signed: Keys should generally be handed over after the tenancy agreement is signed by both parties.

• Payments due: The security deposit and first month’s rent (and any advance rent) are commonly required before possession.

• Move-in date: A defined move-in date is typically stated in the lease; keys are handed over on or after that date.

• Inspections and condition: Some landlords perform a move-in inspection and ensure any agreed repairs are completed before handing over keys.

• Documentation: It’s good practice to use a handover or acknowledgment receipt when keys are transferred.

• Local variations: Practices can vary by country or region, and some landlords may allow earlier access to facilitate moving in, while others require full completion of conditions first.

If you want a precise norm for your location, share your country or city, and whether you’re a landlord or tenant, and the exact terms of your lease.