Proposition 10 would repeal the 1995 Costa-Hawkins Rental Housing Act.
This is the law that EXEMPTS apartments newer than 1995 construction and single family homes and (I think) duplexes from rent control. The law prohibited rent control on newly constructed buildings, single-family homes and condominium units. It also guaranteed the owners of existing rent-controlled buildings the right to raise the rent on a unit to market value for new tenants when the former tenants moved out.
So this is a very big deal and could vastly expand rent control, but only in cities and counties that choose to adopt rent control. They would no longer be restricted only to restricting rents on buildings older than 1995.
( current polls seem to show this is likely to lose )
Developers and business interests are strongly opposed, of course.
Measure 10 Language on the ballot:
EXPANDS LOCAL GOVERNMENTS’ AUTHORITY TO ENACT RENT CONTROL ON
RESIDENTIAL PROPERTY. INITIATIVE STATUTE.
Repeals state law that currently restricts the scope of rent-control policies that cities and other
local jurisdictions may impose on residential property.
More Info on Ballotpedia here