The Rent Stabilization Protection Amendment Act of 2025 seeks to amend the Rental Housing Act of 1985 by removing the exemption from the Rent Stabilization Program for rental units occupied by tenants using tenant-based subsidies. The bill prohibits subsidy administrators from approving rent increases without proper notice that complies with the Rent Stabilization Program. It also empowers subsidy administrators to challenge inappropriate rent adjustments and ensures that reasonable rent increases can occur when a tenant voluntarily vacates a unit.

Key amendments include the addition of definitions for "subsidy administrator" and "tenant-based subsidy program," as well as changes to the requirements for rent adjustments and the standing of both tenants and subsidy administrators to challenge rent increases. The bill specifies that subsidy administrators must receive proper notice before making payments to housing providers and outlines the conditions under which they can deny rent increase requests. Overall, the legislation aims to enhance tenant protections and ensure compliance with rent stabilization regulations for subsidized housing.