Security Deposit for Room Rentals

[Barry Sanders]

How do you manage security deposits for a non owner occupied apartment rented out by the room? If there is damage to shared space ie: kitchen and bath, do all tenants become responsible or must the landlord cover this? 

If the security deposits for room rental do not cover common areas does that mean the landlord is responsinle for upkeep of this common area (kitchen/bath)? For example If a light goes out in the kitchen the land lord must replace the bulb, but if a light goes out in the bedroom the tenant must replace the bulb.