30-Second Read — Is this for you?
In one line. Mo’asher is Dubai’s official Sales Price and Rental Performance Index, launched by Dubai Land Department (DLD) in partnership with Property Finder — and its RERA rental calculator caps how much a landlord can increase rent at renewal, protects tenants against arbitrary hikes, and gives both sides a common reference number to negotiate against.
Best for. Tenants facing renewal, landlords structuring lease terms, and investors underwriting rental income against the index-permitted maximum increase.
What you will learn.
- What Mo’asher does and how the RERA rental cap works
- The five-tier increase cap formula in practical terms
- Dispute resolution via the Dubai Rental Committee
Bottom line. Mo’asher is the reference number every rental negotiation in Dubai either uses or should use. Not using it puts you on the wrong side of a market with clear rules.
What Mo’asher Is
Mo’asher is Dubai’s official rental and sales price index, launched by DLD in cooperation with Property Finder. It aggregates registered tenancy contracts (via Ejari) and sales transactions to produce a data-driven benchmark of prevailing rental rates by community, building type, size, and specification.
The RERA rental calculator sits on top. RERA (Real Estate Regulatory Agency, part of DLD) publishes a rental increase calculator that uses Mo’asher data. For any existing tenancy, the calculator determines what the current rent is compared to the market rate for equivalent property — and what maximum increase (if any) the landlord is permitted to charge on renewal.
Why it exists. Before the RERA cap, Dubai’s rental market had frequent renewal shocks — landlords could raise rent 30-50%+ on renewal in tight markets, leaving tenants with limited practical options. The cap creates a predictable annual-increase framework that protects tenants from arbitrary hikes while allowing landlords to catch up when their current rent lags the market meaningfully.
The Five-Tier Increase Cap
The RERA rental cap is tiered based on how far the existing rent is below the market rate for equivalent property. The current tier structure (as of 2026):
RERA Rental Cap — Current Tier Structure
| Current rent vs market | Max increase allowed |
|---|---|
| Within 10% of market rate | 0% (no increase permitted) |
| 11-20% below market | 5% |
| 21-30% below market | 10% |
| 31-40% below market | 15% |
| More than 40% below market | 20% |
Notice period. Landlord must serve 90-day written notice of a rent increase before contract renewal date. No notice = no permitted increase for that renewal cycle.
Tenants can also ask for reductions. The cap works both ways in soft markets. If current rent is above market rate, tenant can request reduction to align with market — and if landlord refuses, the tenant can take the case to the Rental Committee for adjudication.
Practical example. Tenant paying AED 90K/yr on a Marina 1-bed. Mo’asher market rate for equivalent unit is AED 120K/yr. Current rent is 25% below market — falls in the 21-30% tier — landlord can propose a maximum 10% increase to AED 99K/yr. Landlord cannot demand AED 120K/yr immediately; the increase happens over multiple renewal cycles until parity is reached.
Rental Committee & Disputes
Disputes over rent increases (or reductions), eviction notices, service charge disputes, and other tenancy issues are handled by the Rental Dispute Center (Rental Committee), which sits under DLD.
Process. File a case at the Rental Dispute Center (small filing fee, typically 3.5% of annual rent capped at AED 20,000). Case is heard by a panel; decision is binding. Timeline typically 30-60 days from filing to decision. Both landlords and tenants can file.
Common cases. (1) Landlord demanded above-cap rent increase — committee typically enforces the cap; (2) Landlord issued short-notice or non-compliant eviction — committee can order tenant reinstatement; (3) Tenant refused to vacate after valid eviction notice — committee can order vacation; (4) Service charge dispute — committee reviews and can order refund or payment as appropriate.
Do not skip Mo’asher and go straight to negotiation. Whether landlord or tenant, run the Mo’asher / RERA rental calculator first, then negotiate. Every party who has done the calculation walks into a rental conversation with a defensible position. Every party who has not is negotiating without data.
"Mo’asher is the reference number every rental negotiation in Dubai either uses or should use. Not using it puts you on the wrong side of a market with clear rules."
— YAZDAN Research
Facing a rental renewal or dispute?
30 minutes with our advisory team — we run the Mo’asher calculation for your specific unit and walk through the negotiation or dispute options.
Frequently Asked Questions
Can my landlord raise my rent by more than the cap allows?
No. The RERA rental cap is a legal limit — any demand above the cap can be challenged at the Rental Committee, which will enforce the cap regardless of what the tenancy contract says.
Does the cap apply to new tenants?
No. New tenancy contracts are at market rate agreed between parties. The cap only applies to renewal increases on existing contracts.
How much notice must a landlord give?
90 days written notice before contract renewal date, if the landlord intends to change any term (rent increase, eviction, contract not renewed). Missed notice = automatic renewal on existing terms.
Can I get a rent reduction if the market has softened?
Yes, in principle. If current rent is above market rate, tenant can request reduction. If landlord refuses, tenant can file at Rental Committee. In practice, negotiation with landlord first usually produces a middle-ground outcome without needing formal filing.
Sources cited in this article
- Dubai Land Department — RERA Rental Index (Mo’asher)
- Property Finder — Mo’asher partner page
- Aigents Realty — Smart Rental Index 2026 guide
- DLD — Rental Dispute Settlement Centre
🔧 YAZDAN tools worth bookmarking
• YAZDAN Off-Plan Map — browse every current off-plan project across the UAE on one live map
• AYAN app — YAZDAN’s companion app for investors and buyers
Landlord or tenant navigating a rental decision?
YAZDAN Properties works with both sides. We run the Mo’asher calculation, position the renewal conversation, and support Rental Committee filings when necessary.
Book a 30-minute advisory call →Or email info@yazdan.ae directly.
Editorial analysis. Rental cap tiers and rules may be adjusted by RERA; check the current calculator before decisions.