Leasing an "unwarranted" unit contains inherent risks: recent court cases often treat such lease agreements as illegal contracts, a finding leading to a set of scary, but possible discussions, ranging from such lease being simply unenforceable to a claim for restitution of back rents. A question then naturally arises, what can be done with an illegal contract, and are there any exceptions or conditions for its enforcement. The basic rule is that the contracting parties are both "in pari delicto" and neither can enforce the contract or recover therefrom. There is, however, an exception developed in California, which still lets one side to such allegedly illegal contract to recover from the other. An exception itself is not new, but its application to "illegal" leases developed more recently.
Update 03-07-14: San Francisco pilot program for legalizing in-law apartments got approved at the Planning Commission level.
Update 04-07-14: Board of Supervisors approves the pilot program
Update 02-21-16: Decision in Chen v Kraft invalidated a lease with an unlawful object, under CC § 1598.
Update 03-07-14: San Francisco pilot program for legalizing in-law apartments got approved at the Planning Commission level.
Update 04-07-14: Board of Supervisors approves the pilot program
Update 02-21-16: Decision in Chen v Kraft invalidated a lease with an unlawful object, under CC § 1598.