Use Zoho CRM inventory api to create a layout map app

we use Zoho CRM to manage our Customers and our property units which we sell. We have a property complex. Zoho CRM inventory have units which are categorized as available, reserved, sold, or blocked (other purposes like showroom and rentals). I want this to be reflected in real time with an image of the property. Sometimes the sales teams get confused of where is the unit in the complex. Some units have garden near them and some are near the Main Street. But everytime a seller want to show what is available in a specific neighborhood or category they have to check a sheet list then go to the system and check the availability. It takes time and brings confusion. So I want to have a map app which they can see the layout of the complex and what is available, reserved, sold etc.

The bidder should have experience with Zoho. From my end I can only provide the layout and an account to if needed to use while programming. App can be web based or android that’s fine