A millionaire Republican is seeking to challenge Democratic incumbent Bill de Blasio for the New York City mayoralty in the mold of Mike Bloomberg.

Paul Massey, a real estate executive who recently moved to the city from Westchester County, launched a campaign website and filed the requisite forms Thursday with the Campaign Finance Board for the 2017 election, according to spokeswoman Jessica Proud.

Board spokesman Matt Sollars said Friday afternoon that the board had not received Massey’s filing.

Massey plans to self-fund the campaign with the help of donors, and will not participate in the city’s contribution-matching program, Proud said. For every dollar raised, the Campaign Finance Board kicks in $6, but restricts spending of participating campaigns.

In a news release, Massey said, he would be “sharing our strategic vision for the city” in the months ahead.

“I love this city and I am concerned about where it’s headed,” Massey said.

He took a swipe at de Blasio’s 2013 campaign slogan, that New York had become a Dickensian “tale of two cities.”

“I firmly believe that, with proper management, New York City’s best days are ahead,” Massey said. “This is not a tale of two cities; this is the world’s greatest city and diversity is our strength.”

A poll released Monday by Quinnipiac University found that about half of city voters disapprove of de Blasio’s job performance.

De Blasio has said he welcomes challengers. His re-election spokesman Dan Levitan said, “Under Mayor de Blasio, crime just hit another all-time low, jobs are at record highs, the city is building and preserving affordable housing at a record pace, while graduation rates and test scores continue to improve. We are happy to match that record against any resident of New York City or Larchmont.”

Bloomberg, a billionaire media mogul, entered the 2001 mayor’s race a relative unknown in political circles and won three terms.