Landlords are introducing more perks across the US to attract renters, but cities like New York and Miami maintain tight rental markets.Beata Zawrzel/Getty ImagesMore landlords across the US are offering rental perks to attract renters, according to Zillow.The housing supply has increased post-pandemic, giving renters more options.Cities including New York and Miami saw fewer rental concessions than average, due to tighter rental markets.Apartment landlords are offering massive concessions to draw renters across the US, but not all cities are trying equally hard to drum up new tenants.In July, six metro areas — Raleigh, Charlotte, Atlanta, Salt Lake City, Nashville, and Austin — saw more than half their listings on Zillow offering rental concessions, per a Monday blog post from the online real estate marketplace.