Dubai Land Department has introduced the Smart Rental Index to help tenants check if their rent increase is legal. This AI-based tool provides real-time average rents for specific buildings by evaluating location and building quality. According to Dubai's tenancy laws, landlords can only raise rent during lease renewal and only if the Smart Rental Index justifies it. Landlords must also give tenants a 90-day written notice before the contract ends for any rent increase. The system calculates maximum allowable rent hikes based on how current rent compares to the market average, ranging from 0% to 20% increases. Tenants can verify rent hikes by entering their property details in the online calculator on the Dubai Land Department website or via Dubai REST and DubaiNow apps. If landlords demand more than the allowed increase or fail to give notice, tenants can negotiate or file a complaint with the Rental Dispute Centre using the Smart Rental Index as proof. This dual system ensures fairness and transparency, protecting tenants from sudden, high rent increases while helping landlords set market-aligned rates. The Smart Rental Index is a free, handy tool promoting fair rental practices in Dubai's fast-growing property market.