Sorry for delay reply, now in our country big holiday
Every real money payments workflow - need discuss alone
In "Real estate manager pro" version goo.gl/O0DZam
- together with "Simple membership" goo.gl/jmOE0W
(or some other membership component, what had permition take money from users) - you may take money from your customers for possibility add houses (flats) to your site and take money for possibility manage these houses.
Alone you may take money from customers for advertisement them houses like 100$ per 1000 show or 10$ per 10 clicks.
You may take some % from customers - but you will manage that alone. That at main will depend from your term and conditions, And how you will do payment. So need more details full workflow as you see that