I'm looking to design a Web/mobile app (IOS/Android) where customers can locate/view on a map app, parcels of lands that are available for sale and then contact info for the land owner. This is based in West Africa.
The user can browse the map, zoom in/zoom out, then select the parcel they are interested. This will give them information on size/location/price/etc... Registered users have the option to view contacts information for the land owner. The main page will also have a list version of the map where we can apply filters (price and maybe 2 other variables)
In the backend, I will enter the 4 GPS coordinates that identify a piece of land along with other basic info that are relevant to the users, like size of land / dimensions /price/etc... Once this information entered, it would be added to the database and then made available to the users to browse immediately.
From the user experience, this app needs to be interactive and very lively.
I'm ok if there is already an approved similar application that can be used and modified to fit my needs. Or integrate google maps api polygon features. Only developers with experience will be considered.