بسم الله الرحمن الرحيم
(Fatwa: 297/297/M=04/1437)
If you have got some repairing work done in the rented shop with your own money and added value to the shop, then it is allowable to take extra rent from other tenant in view of the new work, but it is not better, you should give all the rent to the mosque committee in the interest of the mosque and the committee should give it to such a person who gives more rent to the mosque.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
