- Year built
- 1879
- Type
- Cooperative
- Amenities
- Manual freight elevator, intercom and storage
- Landmark status
- Not an individual landmark; in the SoHo-Cast Iron Historic District
- NYC Landmarks Preservation Commission records, updated February 2026
Every recorded sale at this building, 2004–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2026 to date
- $1,663
- 1 sale
- Listing discount
- 0.0%
- Recorded sales
- 12
- On record
- 2004–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 121 Mercer Street would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.
About the building
121 Mercer Street is a five-residence loft cooperative in a cast-iron commercial building designed by D. & J. Jardine. It was completed in 1879 for the New York Eye and Ear Infirmary as a commercial property. The cast iron came from Althaus Iron Works. The five-story facade belongs to the original SoHo-Cast Iron Historic District, and the building retains a manual freight elevator as part of its residential circulation.
Full-floor lofts measure roughly 1,800 to 2,000 square feet. East and west exposures place windows at opposing ends of the apartments, with deep interior space between them. Layouts include two-bedroom configurations with a home office, tall ceilings and exposed brick. The elevator opens directly into the homes. Central air conditioning and in-home laundry are present in renovated configurations, with additional storage outside the principal living rooms.
Local Law 97
This building is below the 25,000 sq ft threshold at which LL97 limits apply to a building on its own. It is still covered if it shares a tax lot or condominium board with buildings totaling over 50,000 sq ft; confirm on DOB’s covered-buildings list.
See full Local Law 97 analysis →Recent sales
Recent transfers at this building, from The Roebling Research Library. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| May 29, 2026 | 4 | 2 BR · 2.5 BA · 1,804 sf | $2,999,999 | $1,663/sf | -4.0% |
| Jun 1, 2016 | 4 | 2 BR · 1 BA · 1,800 sf | $2,300,000 | $1,278/sf | -7.8% |
| Dec 17, 2012 | 2 | 2 BR · 2 BA · 2,000 sf | $1,995,000 | $998/sf | -9.3% |
| Dec 14, 2010 | 1 | 2 BR · 2,000 sf | $1,650,000 | $825/sf | -5.7% |
| Jun 17, 2010 | 2 | 1 BR · 2,000 sf | $1,330,000 | $665/sf | +0.0% |
| Dec 2, 2005 | 1 | 2 BR · 2,000 sf | $1,750,000 | $875/sf | +0.0% |
| Sep 21, 2004 | 2 | 1 BR · 2,000 sf | $1,330,000 | $665/sf | +0.0% |
| Jul 28, 2004 | 4 | 2 BR · 1,800 sf | $1,350,000 | $750/sf | +0.0% |
Market read. Most recent trades (2026 to date) cleared a median $1,663/sf (recorded) across 1 sale. Median listing discount 0.0% from the last ask.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-00499-0027). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage on co-ops is not officially recorded, figures shown are approximate.
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Buying here? Co-op closing costs typically run 2 to 3% of the price. See NYC co-op and condo closing costs, line by line.
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What to know if you’re buying
The manual freight elevator is part of everyday access. Its operation differs from an automatic passenger elevator, so a buyer should experience its doors and controls directly. Replacement or modernization would involve a five-residence cooperative and a landmark building; the installation's current maintenance arrangement is therefore particularly consequential here.
Comparable buildings
- 35 Mercer Street: A small prewar loft cooperative farther south on Mercer.
- 101 Wooster Street: A nearby cooperative with industrial loft architecture.
- 242 Lafayette Street: A similarly limited cooperative inventory east of SoHo.
- 93 Mercer Street: Another same-street loft cooperative with a larger association.
The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
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646.939.7375 · c.cohen@compass.com