MARK SETTEMBRE entered the fourth-floor master bedroom of his new house, gazed out the big round picture window, and gloated.

“Now do you see why I did it?” he said to a couple of visitors. “I know a lot of people are saying: ‘What? Is he crazy?’ But look at that. That’s what I see from my bed.”

Motorists might be excused for wondering whether the owner of this particular house was crazy, situated as it is between overpasses at the edge of Hoboken here.

In the immediate foreground, as Mr. Settembre and his guests looked out the window, there was heavy traffic on the Park Street overpass into Hoboken, traveling so close that some drivers’ profiles were visible. But then, no one looking at that view could ever be focused primarily on traffic.

Beyond the bridge, the Hudson River glittered with ships and sailboats, and two helicopters buzzed around the top of the Empire State Building like bees.

It’s a view that might quiet even the most vociferous skeptics — and skeptics are apparently plenty, judging by the snarky commentary on blogs devoted to Hoboken real estate and land use. “Would you want to live here?” blared a headline over a photo of the house published on the Hoboken411 Web site.

But skeptics are probably also wondering about the issue of “how?”

How did Mr. Settembre, a Hoboken housing developer, go about getting permission to build a 7,500-square-foot house with a seven-car-garage that fills up almost every square inch of a small triangular property at one end of a site long envisioned as a Hoboken park?

“Very sneakily,” said Mr. Settembre, who moved into his warehouse/loft-style, “single-man’s dream” house in June.

He quietly bought the sliver of land, then derelict, from an individual property owner after the city of Hoboken had acquired the rest of the property known as 1600 Park Avenue, parcel by parcel, under pressure from civic groups to increase public open space.

Mr. Settembre is a principal, with Michael C. Sciarra, in the URSA Development Group, which built two high-rise buildings in partnership with the now-bankrupt national firm Tarragon Development, and URSA remains the designated developer for a couple of plots in Hoboken’s northwest redevelopment area.

Last year Mr. Settembre applied for two significant zoning variances — for height and setback requirements — in Weehawken; his lot is just over the border. As is legally required, Weehawken officials said, they sent notice to Hoboken officials inviting comment.

For some reason, Hoboken’s planning officials either ignored the notice, or overlooked it. Michael B. Kates, the current corporation counsel for Hoboken, did not hold that post at the time and said he did not know what had happened.

Mr. Settembre, who took up amateur boxing several years ago in his mid-50s and seems to enjoy fighters’ lingo, said, “We just kept our heads down.”

The approvals were granted.

Then one day in spring 2009, Jim Doyle, a Hoboken lawyer, was jogging beside the Park Avenue Bridge and spotted construction equipment. He called his wife, Leah Healey, who is a founder of Hobokenparks.org, a civic group that had pushed since 2006 for creation of a public park on the large strip of land along the Park Avenue and Willow Street bridges. The land was then serving mainly as a hangout for the homeless.

“It was quite upsetting to us,” Ms. Healey said of the house last week, “because it upsets a holistic plan for open space we have in mind for the whole area, which wraps into Weehawken.”

“In the case of his house,” she added, “the deed was done before anyone in Hoboken was aware. I hope he doesn’t mind having lighted ball fields out his window, because that is what we really need in Hoboken, and that’s the design plan that has support from everybody we talk to.”

Mr. Settembre said he didn’t mind, and might even sponsor a team he could watch from one of his two decks facing west. Since he moved in, he noted, the weedy strip in Hoboken has been capped with dirt, graded, and seeded — and he called it a “nice improvement in my backyard.”

The house does not have its own yard; the southern wall is set three feet from the park land.

“I am a single guy,” he said. “I don’t want to mow the lawn.” Besides, Mr. Settembre said, he has other houses, in Palm Beach, Fla., and Southampton, N.Y.

The son of a bricklayer, he was born in Hoboken, and said he was “carrying cement buckets when I was 8.” Now, he likes socializing with artists and actors in Manhattan (where he also has an apartment).

“I am always a Hoboken guy first, though,” he said. He made it a point to furnish his Weehawken house with work by hometown artists, he said. “Hoboken forever, for me.”

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