Readers had landlord-tenant relations on their minds this week, sending stories about landlords changing building locks, levying late fees, and overcharging renters to the top of our most popular stories list.

Here, in full, are our top-five most read stories of the past week:

1. A renter wonders: Can I afford to ditch the roommates and get a one bedroom?

2. Attention rent-stabilized tenants: If your landlord changes the front lock to a key fob system, she can track you

3. 'We're not anti-landlord, we're anti-stealing': Talking to a self-appointed enforcer of NY's rent laws

4. How much can my landlord charge me for paying my rent late?

5. How much money do you need to buy a co-op in NYC? [sponsored]