What house rules addendum means in practice
House rules carry weight only when they are part of the signed agreement, delivered to every resident, and applied consistently. Useful rules describe observable behavior — quiet hours, guests, cleaning turns, parking, trash, smoking, shared storage — rather than vague expectations, and they should be reviewed against fair-housing and local requirements before use.
Example
Every resident signs the same house rules addendum covering quiet hours, overnight guests, kitchen cleanup, and trash night, and it is attached to each per-room lease.