Activists looking to stop the approved downtown Scottsdale Hanover apartment and retail project gathered well above the required number of signatures to force an election.
The 3,170 signatures filed with the Scottsdale City Clerk's Office on Thursday must be verified before an election is called, and may have to withstand legal challenges. If an election is called, it would be held in September or November.
A minimum of 1,961 valid signatures would be needed for a public vote to determine whether to uphold or overturn the project's approved zoning.
"It was a team effort, even with their 'goons,' " said Tom Giller, chairman of the Height and Density political committee, in reference to its claims of intimidation by the Hanover supporters.
The City Council voted 5-2 last month to approve the project, which would bring high-end apartments to the northwest corner of Goldwater Boulevard and Indian School Road.
The building would include shops on the first floor and 230 apartments in a building that would rise up to five stories tall, or 65 feet. A smaller, one-story commercial building facing Fifth Avenue is also planned. The project would replace office buildings, a Village Inn restaurant and a Ramada Limited hotel.
Giller, whose group said the Hanover project was too tall and dense for the downtown area, expects a legal challenge to the referendum.
Hanover election lawyer Tom Irvine said this week that may happen.
Hanover and its partners contributed $31,000 to block the referendum effort. A $7,744 payment to a petition firm headed by Derrick Lee and $20,000 to Irvine's law firm have been reported.
Height and Density has made no financial filings, which are required after receiving or spending $10,000.