THE Chelsea block that’s been held hostage by the raucous club-hopping of bridge-and-tunnel crowds may be on the verge of getting some relief.

Several development sites on West 27th Street between Tenth and Eleventh avenues are under negotiation, are in contract or have been sold to developers that intend to put residences above the fray.

Additionally, sources said several clubs are either fending off entreaties or negotiating to be bought out of their leases.

One tenant who won’t budge, they said, is Amy Sacco, whose cheap deal for the infamous Bungalow 8 at 515 W. 27th St. still has a few years to go.

Most likely because we weren’t asking for bottle service, a call to the club seeking comment was not returned.

The Department of Homeland Security is also going to be displaced from a parking lot it rents at No. 537-545 between Scores West and the Sundaram Tagore Gallery.

Owned by 19 members of the Cirillo family – of Cibro Oil fame – their 124,800-foot development site was just traded to RD Management for $42 million, or $340 a foot. It’s also possible to add air rights to go to 180,000 feet, says broker David Schechtman of Eastern Consolidated, who marketed it along with colleagues Eric Anton and Ron Solarz.

“This is turning into one of the busiest development blocks in the High Line,” Schechtman said.

While the north side of the block can be a receiver of air rights, the south side remains zoned for manufacturing. Even so, lots are falling like dominoes to those who want to redevelop decrepit buildings into galleries, stores and offices.

Artist-turned-developer Peter Moore has already started construction at 520 W. 27th St. on a new, 100,000-foot building that Schechtman said will be lofts for artists.

Department of Buildings records show approvals for an 11-story building with parking for a dozen cars, ground-floor retail and offices above. A call to Moore was not returned by presstime.

The former home of Spirit, located at 530 W. 27th St., was controlled by former club dishwasher Robbie Wooten and Dominic Kelly, a Dublin-based accountant who also owns 534-536 W. 27th St.

The building at 530 W. 27th St. is in contract to be sold, confirmed Alex Picken of Picken Real Estate & Nightlife Brokerage, who declined to provide other details. E-mails to Kelly were not returned by presstime.

We also hear that the owners of Scores West at 533-535 W. 27th St. are in talks with anyone from anywhere willing to pony up $40 million for their 10,000-foot lease which runs through 2021 and includes its coveted adult license.

“There is no specific offer,” an executive with Scores told us. “We get approached by people all the time.”

On the north side, the Formato family’s horseshoe-shaped old iron scrap yard is also tied up with a hard contract. The site – which includes 505-507 W. 27th St., 521-523 W. 27th St., 504-512 W. 28th St. and 514-524 W. 28th St. – can yield up to 261,000 feet of development.

Marketeers at Holliday Fenolio Fowler did not return calls.

Adding more intrigue: A red Ferrari owned by Philadelphia developer Gagan Lakhma, with plates touting his company initials, “CREI,” has been seen parked in the area.

Lakhma also didn’t return a call for comment.

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Tishman Speyer Properties is getting offers up the wazoo for just about all of the Archstone-Smith apartment buildings all over the country. The CB Richard Ellis team led by Darcy Stacom and Bill Shanahan is now vetting the offers.

Among the city properties that TSP will be picking up when the $22.2 billion deal closes in October – if and when financing is corralled by Lehman Bros. – is 101 West End Ave., the Key West at 750 Columbus Ave., the Gershwin, Marlborough House at 245 E. 40th St., and 180 Montague St. in Brooklyn.

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Turning to other people’s former money, the American Numismatic Society will be selling its 35,000-foot building at 96 Fulton St. and moving its collection of 800,000 coins to One Hudson Square.

Its new 19,000-foot lease on the 11th floor was done in the high $40s a foot through Tom Sullivan, who recently joined Cushman & Wakefield, and Tim Sheehan at CB Richard Ellis, whose group is selling the building.

Robert Constable, Andrew Peretz and Marc Packman of Cushman & Wakefield represented One Hudson’s Trinity Real Estate ownership.

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