Smart Locks for Multifamily Building

[Brad Ehnert]

I am currently rehabbing a 6 unit apartment building. I'd like to go with all smart locks to avoid having to make, copy and store keys. Plus I would like to have separate code for maintenance people, cleaning people, etc. I would want to have one lock on the common door and then individual locks on the apartment doors. This would be more convenient for tenants and also allow me to give access for showings, maintenance, cleaning, etc. without giving everyone the lockbox combo. 

I would like to have remote access to at least the front door. Do I need to pay for internet for the common areas in order to connect the smart lock? I would like the option to create single use or timed key codes. Maybe I could have a connected smart lock on the main door so I can allow access and create new codes. Then I could have non-connected smart locks on the individual doors and just make up different key codes ahead of time for each category (showing, maintenance, etc). 

What have you guys been using?