Welcome to the Los Angeles Housing Department (LAHD) Forms Central. Below are the most commonly used forms and bulletins.What Falls Under RSO. If you own rental property in the City of Los Angeles, it may be subject to the city's Rent Stabilization Ordinance (RSO). The Treasurer and Tax Collector mails the Annual Secured Property Tax Bills each year in October to every owner listed on the Secured Tax Roll. These local laws may impose stricter limits on rent increases, along with additional tenant protections.