The Real Estate Board of New York says listed retail rents on Broadway are up since spring 2014.
The free event on May 2 and 3 will feature properties in Harlem, Washington Heights and Inwood.
The plan would allow developers to build taller in exchange for creating more affordable housing.
Councilwoman Margaret Chin wants landlords of unsafe buildings to pay for tenants to live elsewhere.
Merchants say they can avoid high rents and gain additional customers by sharing retail space.
The primary is Sept. 9 for seats that have been open almost all year.
Stuyvesant Heights Historic District expanded in August. Supporters want more of Bed-Stuy landmarked.
In areas like the Upper East Side, Flushing and The Bronx, too, home prices are up, REBNY said.
Nearly 30 percent of properties are designated as landmarks, making Manhattan too expensive, REBNY said.
The Harlem City Council race got dirty as fliers called Inez Dickens a "slumlord millionaire."
The Real Estate Board of New York announced contenders for its 2011 retail deal of the year on Wednesday.
Critics have slammed Councilman Leroy Comrie's proposed bills as an attack on landmarking rules.
The City Council is considering a new law that would water down landmarking rules, preservationists say.
A meeting on the fate of the historic building is set for Wednesday.
The public will have its final chance to weigh in on a plan to landmark more than 800 Upper West Side buildings, as the Landmarks Preservation Commission holds its last public hearing Tuesday.
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