First of all Ezdan rent and policies are changing often, Barwa had increased the rent recently and ezdan will follow them soon.

If you take ezdan now from a current resident then you have to 4300 or 4600 until this contract and when you renew Ezdan will make you pay 6000 or whatever is rent that time.

by the way, for 5000 to 6000 you can get a very decent flat in Doha.