Size: 11,300 square feet

Deemed "Our Suburb" by the wife of its creator Steven Schnall back in 2005, this sprawling homemeasures 65 feet wide and was originally two buildings. It has a three-car garage, a 47-foot-long indoor swimming pool, and 1,500 square feet of private outdoor space. The home is currently for sale, asking an equally extravagant $38 million.

Size: 11,400 square feet

Two Greenwich Village townhouses between Sixth and Seventh avenues are on the market for $15.65 million. While the two townhouses are each divided into six apartments, mostly occupied, proceedings to remove tenants are underway. The properties combined would be 41 feet and have 9,600 interior square feet and a 1,800-square-foot yard.

Size: Approximately 12,000 square feet

Over the last couple of decades, Michael Bloomberg has been patiently purchasing the apartments of 19 East 79th Street, the townhouse adjacent to his opulent residence 17 East 79th Street. While Bloomberg has taken over five of the units in the neighboring building, one apartment is still holding out. It appears that the former mayor may have to wait a few years to finally habit his Beaux-Arts fantasy.

Size: 12,000 square feet

Purchased for $32 million in 2012 (reportedly by John Stryker of the Stryker Corporation), the proposal for this West Village megamansion was approved by the Landmarks Preservation Commission last October. The approved design includes a set-back tower protruding from the top, though it’s barely visible from the street. Other tweaks include a small penthouse addition in place of the library tower atop no. 85 and a facade recess on no. 89. One of the megamansion’s main elements, its glazed window wall, has been lowered by about 13 feet.

Size: Around 12,000 square feet

The West Village has strayed quite a bit from its Bohemian roots, with some of the priciest residential properties in the city located there. In June 2016, a buyer purchased 138-40 West 11th Street for the princely sum of $31 million. The megamansion plans, which were approved by the LPC in March, call for updating its brick facade, replacing both front doors, adding a new cast iron gate and a bluestone walkway, and, most notably, attaching shutters to 17 of the front facade’s 21 windows.

Size: 13,328 square feet

Real estate investor Ciaran O’Kelly has been trying to find a buyer for this megamansion-in-the-making for years now, with little success; but it recently returned to the market with a slightly absurd $49.5 million price tag. The over-the-top features depicted in previous renderings—a rooftop pool, a squash court, an architectural interior staircase connecting the various floors—seem to be intact, suggesting that they’re part of the “plans … envisioned by celebrated AD 100 architect Leroy Street Studios” that come with the sale.

Size: 14,850 square feet

Over the last few years, the Jehovah's Witnesses have been unloading their mammoth real estate portfolio in Brooklyn. Located in the ever-tony Brooklyn Heights, the religious organization recently sold the 20-apartment building for $22 million to the Benchmark Real Estate Group, who brought on Ryan Serhant to sell the building as a single-family home. (It’s currently off the market.) To turn this dream into reality, The Renovated Home has been contracted to transform the property into a four bedroom with a gym, wine cellar and roof terrace.

Size: 16,000 square feet

The Neo-Georgian home is 16,000 square feet, seven stories, and 28 feet wide, with iron fences, open urns, broad low stoops, and service entries on the lower level. The mansion was built from 1901 to 1903 as two separate homes. No. 12 was built for Mary F. Ogden and No. 14 was built for her brother, Charles W. Ogden. In 1935, Charles died and the deed for No. 14 passed to his sister. The megamansion is now asking $38.5 million.

Size: 18,000 square feet

Russian billionaire Roman Abramovich is no stranger to luxury, but even this megamansion could be considered a bit over the top. The powerful oligarch is conducting a renovation that combines three Upper East Side townhouses, creating a combined space of 18,000 square feet. While Abramovich is restoring the south facades of the Neo-Federal and Queen Anne homes, the rear facade will be reconstructed with a glass and bronze curtain wall. The whole shebang was approved by the Landmarks Preservation Commission in June.

Size: 20,000 square feet

In 2015, Turett Collaborative Architects filed an application to the Department of Buildings to transform this 20,000 square-foot, eight-unit building into a seven-story single family mansion. Not much has happened since then, though; the building is currently being marketed by Cushman & Wakefield for $26.5 million, the price of which includes plans for that ridiculously over-the-top single-family home.

Size: 21,500 square feet

While Jeff Koons is known to attract controversy with his art, his real estate dealings have also embroiled him in a bit of neighborhood drama. Koons purchased 11 and 13 East 67th Street in 2009 for a combined total of $32 million. With his initial renovation plans rejected by the DOB in 2010, Koons bided his time until filing his new application in 2013 and construction is now underway. Considering the Upper East Side's staid, quiet reputation, an active construction site led to problems between them and Koons.

Size: 21,000 square feet

4 East 75th street has had a rather tumultuous recent history. Investor J. Christopher Flowers purchased the property in 2006 for the record breaking sum of $53 million. Having spent over $4 million gutting the interior of the mansion, Flowers sold the place for a "meager" $36.5 million to art dealer Larry Gagosian in 2011. Five years later, the mansion is still being renovated.

Size: 28,691 square feet

This West Village two-story building has been targeted for conversion three times. The LPC has recently approved a proposal by Billionaire hedge funder Steven Cohen to transform this building to a four-story megamansion and a six-story apartment building next door. Though it’s unclear how much space will become mansion and how much will be apartments, the whole shebang will come close to 30,000 square feet, per plans on file with the Department of Buildings. Cohen bought the property for $38.8 million in 2012 after developer Scott Sabbagh proposed a seven-story boutique hotel back in 2008.