Stand at Third Avenue and East 125th Street and look up. The old Pathmark site on the southwest corner has a reinforced concrete frame on it now, wrapped in netting, and it's past the halfway mark on its way to 38 stories. Look east across the avenue and the block between 125th and 126th has a 14-story, 828-unit filing sitting in plan review. Keep walking to Second Avenue and you hit a parking lot the city has owned, with approvals in hand, for nearly twenty years — and that one's still open for proposals. Three addresses, roughly 1,700 apartments, and they're all moving in the same summer.

Here's the one that's actually out of the ground. 180 East 125th Street is JCS Realty's 711-unit rental tower, 410 feet, 38 stories, designed by S9 Architecture, with a supermarket and 116 parking spaces at the base. New York YIMBY photographed it in August with the concrete superstructure past the midpoint and the site board still showing a fall 2026 completion that nobody on the sidewalk believes; YIMBY's read is second half of 2027. The permit log backs up the pace: a personnel hoist was permitted July 22, a concrete pump was permitted in May, and the knuckleboom permit first filed in March was renewed and approved in early July. That's a building in the vertical-trades window right now — the formwork, rebar and hoist crews are on it, and curtain wall, elevators and MEP rough-in are next in line.

“This isn't a private developer who found a lot. It's the last big piece of a public deal finally getting a building.”

Now, the money. Extell bought this corner for an office project it called Harlem Headquarters, never built it, and agreed to sell the site for $70 million in September 2024 — Commercial Observer reported the contract and pointed to JCS Realty's Jacob Schwimmer as the likely buyer. City property records settled it: the deed closed in December 2024 alongside a $155 million construction loan from Kennedy Wilson, and JCS Realty is the owner on every permit pulled since. So this one's financed, permitted, and pouring. The general contractor isn't named in the city's filings, and we're not going to guess.

The second one is bigger and it's paper. On July 26, East Harlem MEC Parcel C LP filed a new-building application at 243 East 125th Street: 14 stories, 828 units, with 65 parking spaces and room for 218 bikes. The Buildings Department's own record lists 369,603 square feet of construction floor area; the trade press, reading the zoning sheet on the same filing, reports about 740,000 square feet split roughly 648,000 residential, 82,000 commercial and 10,700 community facility. Take the city's number as the one on file and the larger figure as the building's full zoning yield. Paul Carr of S9 Architecture is the architect of record — the same firm drawing the tower across the avenue. Commercial Observer and The Real Deal identified the partnership behind the entity as the Richman Group and Monadnock Development, with an early-2027 construction start. The name on the owner line is the tell: Parcel C is the city's own East 125th Street Development, the three-parcel, roughly six-acre assemblage the city approved in 2008 between Second and Third Avenues. This isn't a private developer who found a lot. It's the last big piece of a public deal finally getting a building.

Say it plainly, because the brief on your desk probably doesn't: filed is not started. The job is in Plan Examiner Review as of this week — the architect's filing in July, then foundation on August 14, plumbing, sprinkler and mechanical on August 17, and structural on August 20. No permit has issued, and there is no demolition filing on the record because the lot is vacant. What the August filings do tell you is which trades are being drawn: DeSimone on foundations and structure, Cosentini on MEP. When you see foundation and support-of-excavation filings stacking up on a filed job in August, the owner is trying to be in the ground by winter. One number to watch: the city's December announcement of this final phase described roughly 400 affordable rentals and 80 affordable homeownership units at 2319 Third Avenue, on the same block. The July filing carries 828. The paperwork doesn't reconcile those two figures, and we're not going to do it for them.

And then there's the one you can still bid. On July 20, NYCEDC issued an RFP for B-East — Block 1790, Lots 25 through 31, a 17,337-square-foot city-owned parcel on the east side of Second Avenue between 125th and 126th. The ask: a mixed-use, mostly residential building of around 140 mixed-income units, built under 485-x with no public subsidy, the site's zoning built out to the maximum, an active ground floor, a local hiring and wage program, and a 30 percent M/WBE participation goal. That last part matters to a contractor more than the unit count does. Let's say the hard cost comes in around $90 million. Thirty percent is $27 million that has to be papered to certified M/WBE firms — and the development team has to show that plan to the city before it ever shows it to a lender.

The dates: the optional site visit was August 18, so that's gone. Proposals are due at 4 p.m. ET on Tuesday, October 20, 2026, uploaded through NYCEDC's B-East RFP page — the July press release said 5 p.m., but the RFP page itself says 4 p.m. twice, and the RFP page is the one that counts. Questions close September 25 at 5 p.m. If you're a GC or a CM, the play here isn't to respond yourself — it's to be on a development team's response. The teams answering this RFP are assembling builders, M/WBE partners and local-hire plans right now, because the RFP scores them. If you want to be on the block, September is when you make that call.

Zoom out one more notch. The MTA paid Extell $82 million in 2023 for the lot next door at 160 East 125th Street, where the Second Avenue Subway's future 125th Street terminal comes up, and it's pushing a rezoning for a roughly 680-unit tower over it. That's the rule-change side of the corridor and it's a separate story. The project side is this: in eighteen months, the south side of 125th between Lexington and Third, the north side between Third and Second, and the corner at Second could all be under crane at once. The Pathmark closed in 2015. The parking lot has sat since 2008. East Harlem waited a long time for this corner, and now it's all coming due in the same fiscal year.

What to do now: if you chase vertical trades, 180 East 125th is buying curtain wall, elevators and MEP next, and the owner's rep is the door. If you do foundations, shoring or structural concrete, 243 East 125th is the one to watch — a permit on that filing is the starting gun. And if you want in on B-East, find a development team before October 20, not after.