Take a look at:
This would allow WiFi connectivity to control (Switch/Activate and Sense/Door Position) up to 3 garage doors.
I would use a 3 button Garage Remote … and have the 3 relays drive the 3 channels (A little soldering is needed!)
Then you would only need 3 magnetic reed or tilt sensors (one for each door).
In many housing configurations, the garage is likely to be the furthest from the center of control, WiFi connectivity would be more likely/reliable.