The laws regarding security deposits may not be waived. Any oral or written provision attempting to waive any part of the security deposit laws is against the public policy and void. For example, a common attempt to make a tenant waive the security deposit law is to place a restrictive endorsement on the back of a check from the landlord returning a portion of the security deposit.
The restriction might state that by cashing the check the tenant relieves the landlord from any further responsibility for the withheld portion of the security deposit. This type of restriction is not valid. A tenant can cash the returned security deposit check and not be bound by the restrictive statement on the back of the check.