Ejari is the tenancy contract registration system.

we can check percentage increase of rental value by visiting dubai land department website https://dubailand.gov.ae/ and then clicking on e-services, selecting the rental increase calculator, and then entering Ejari contract data to check out the percentage of the increase in the rental value.

What is sub leasing .

The original tenant re-renting the property to another party

If the owner accepts and give permission then the original tenant can re rent or sublease the property

Can owner tell the tenant to vacate the property immeditately.

No the owner have to give notic for the tenant to vacate the property .