my understanding is that NYC rent stabilized units also have restrictions for vacant units too.
>Any time a tenant vacated, landlords received a “vacancy bonus” that let them increase the rent of the unit by up to 20%, and once an apartment’s rent reached a certain dollar amount — most recently, $2,774 a month — the unit left the rent-regulation system entirely, allowing the landlord to rent it at any price.The Housing Stability and Tenant Protection Act of 2019 (HSTPA) repealed both vacancy bonuses and vacancy decontrol. It also sharply limited how much landlords could pass along the costs of renovations to tenants through rent increases, practices that housing advocates and lawmakers criticized for spiking rents and fueling displacement.
Prior to 2019, landlords could make a lot of money by emptying out rent-stabilized apartments. HSTPA essentially revoked any financial incentive to do so.