You hold the units: the service charges, the developer instalments and the void periods are yours, and you are the person who finds out last when a cheque does not clear. The owner's account is the one that sees all of it on one surface.
The three screens this account opens on, captured from the product.



Four cheques, four states, one schedule
What the year should cost, and what it actually did
The bills you paid, and who owes them back
What the unit actually made
The instalments you owe the developer
The contract, its signatures and its Ejari certificate
Add them as a co-owner with an access scope over the entities or properties they work on. The scope is part of the account, not a filtered screen.
One unit, one record, and three accounts looking at it. What each of them can reach is decided in the database rather than by which screen they were sent to.