Every year, thousands of rental disputes land at Dubai's Rental Disputes Settlement Centre — and a staggering number of them stem from a basic misunderstanding of how the RERA Rental Index works. Landlords assume they can raise rent by whatever the market will bear. Tenants assume any increase is illegal. Both are wrong. The RERA Smart Rental Index, managed by the Dubai Land Department, is the only legally binding tool for determining permissible rent increases in Dubai. If you're a landlord or tenant and you haven't used it before signing or renewing a lease, you're negotiating blind.
The Bands and Percentages
The calculator compares your current rent against the average market rent for comparable properties in your area. The result falls into one of several bands that dictate the maximum allowable increase. If your rent is already at or above the market average, the landlord cannot increase it at all. If your rent is 11-20% below the market average, the landlord can raise it by up to 5%. At 21-30% below market, the cap is 10%. For 31-40% below, it's 15%. And if your rent is more than 40% below the average, the maximum increase is 20%. These percentages are caps — a landlord can always charge less, but never more. The bands are periodically updated by DLD based on actual transaction data, which is why two identical apartments in the same building can have different permissible increases depending on when their leases started.
How to Use It Correctly
The RERA Rental Index calculator is available on the DLD website and the Dubai REST app. You input the property type, number of bedrooms, area (community), and your current annual rent. The system returns whether an increase is permissible and, if so, the maximum percentage. For landlords: you must serve the tenant a 90-day notice via registered mail or notary public before the lease expiry date if you intend to raise rent. Without this notice, the existing rent automatically renews at the same amount — regardless of what the calculator says. For tenants: if you receive an increase notice that exceeds the RERA-calculated cap, you have grounds to dispute it. File at the Rental Disputes Centre before your lease expires, not after.
Common Misconceptions That Cost People Money
Misconception one: "The index only applies to old contracts." Wrong — it applies to all rental renewals in Dubai. Misconception two: "My landlord can evict me if I refuse the increase." Also wrong — a landlord can only evict for specific reasons outlined in Law No. 33 of 2008, and a rent dispute is not one of them. Misconception three: "The calculator accounts for upgrades to the property." It doesn't — the index compares like-for-like based on area, type, and size. If the landlord renovated the kitchen, that's not reflected in the RERA calculation. Misconception four: "I can use last year's calculation." The index updates regularly, so always run a fresh calculation within 90 days of your renewal date.
Practical Advice for Both Sides
If you're a landlord, run the RERA calculator before sending any increase notice. An illegal increase letter doesn't just get rejected — it signals to the tenant that you don't know the rules, which weakens your negotiating position on everything else. If you're a tenant and your rent is significantly below market, expect an increase and budget for it. The smart move is to run the calculator yourself before your landlord does. If the permissible increase is steep, negotiate a two-year contract with a fixed rent — many landlords will accept a smaller increase in exchange for guaranteed occupancy. And both sides should screenshot the calculator result with the date visible. In a dispute, documentation wins.