Monster House advice

[Christopher Wilson]

Question for any of you who have done university monster houses: 

We're remodeling one and need advice on two things:

1) a cost effective keyless lock (eg key fob or code) that we could install on each door in the house (presumably for students) and the front door. I have one bid for $3500 per door, and that seems way high.

2) a sample lease that stipulates tenants are responsible for damage to furniture, appliances, etc., in common areas.

Thank you for any help.