According to the LAHD, even if your rental unit is not covered by the RSO, if the landlord intends to convert the unit to condos or demolish the unit, you are entitled to relocation fees.
You should contact the Los Angeles Housing Department to confirm whether or not you are entitled to relocation assistance.
Check with the rent control board, or with a local landlord tenant attorney.
But, if the new owner wants to sell the property, unless you have a written lease, you are not generally entitled to relocation costs.
Check the guide at the link below for more information.