Great that you're being careful. Here are the key things to check: Deposit terms — Standard is 1 month deposit + 1 month rent upfront. Some landlords ask for 2 months deposit — that's a negotiation point, not standard. The contract MUST specify conditions for getting your deposit back. Price increase clause — Look for "incremento anual." Legally they can only increase by the INPC inflation rate (usually 4-6%). If it says a fixed 10% annual increase, negotiate it down. Early termination — Many contracts have a penalty clause (usually 1-2 months rent) for breaking the lease early. Make sure it's clearly defined. Maintenance responsibilities — "Mantenimiento menor" (minor maintenance) is usually the tenant's responsibility. "Mantenimiento mayor" (major — plumbing, structural, AC compressor) should be the landlord's. Red flags: - No written contract at all (some landlords try this) - Deposit in USD but rent in pesos (exchange rate games) - No property ownership proof (ask for "escrituras" or at least a utility bill in their name) - Asking for the full year upfront I'd recommend having a bilingual friend or a lawyer review it. A contract review costs about $1500-2000 MXN and can save you a lot of headaches.