- Year built
- 1930
- Type
- Cooperative
- Units
- 114
- Landmark status
- Not an individual landmark; not in a historic district
- NYC Landmarks Preservation Commission and City Planning records, updated February 2026
- Subletting by shareholders
- Permitted with conditions
- Pied-à-terre
- Permitted with conditions
- Doorman
- Full-time doorman
Every recorded sale at this building, 2003–2026
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- Studio median, 2023–2026
- $565K
- 9 qualifying sales
- Recent range
- $425K – $2.4M
- Listing discount
- 2.2%
- Recorded transfers
- 156
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 100 Seventh Avenue 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.
100 Seventh Avenue is a prewar cooperative of real scale on one of Chelsea's primary north-south avenues. Built circa 1930, the building belongs to the interwar era of solid masonry apartment houses that defined Seventh Avenue's residential character as the neighborhood matured. With 114 residences, it is among the larger prewar co-ops on the corridor — a size that matters because it tends to produce a deeper, more liquid resale market than smaller boutique co-ops, and a maintenance base spread across more units.
The building's appeal is the appeal of prewar Chelsea generally: location at the center of one of Manhattan's most walkable neighborhoods, proximity to the High Line, the Chelsea gallery district, and the transit and retail spine that runs through the area. For buyers who want a stake in the neighborhood at a more accessible entry point than Chelsea's trophy condominiums, a prewar co-op like 100 Seventh Avenue is often the answer — co-op pricing, on a per-room basis, generally sits below condominium pricing for comparable space, in exchange for the board-governance framework co-ops carry.
What distinguishes the cooperative form here is exactly that framework. Buyers purchase shares in a corporation rather than real property, and every purchase is subject to board approval. That structure self-selects for an owner-occupant community and produces a different ownership experience than the condominiums nearby. It also shapes how the building behaves on resale, which we address in the sales context below.
Chelsea's prewar co-op stock is finite. The neighborhood's recent development has been overwhelmingly condominium — 100 Eleventh Avenue, 245 Tenth Avenue, One High Line (76 Eleventh Avenue), and the trophy conversions further east. Against that backdrop, an established prewar cooperative with 114 units occupies a distinct niche for buyers who specifically want co-op ownership in Chelsea.
Architecture and unit composition
100 Seventh Avenue presents as a prewar masonry apartment house of the type built across Chelsea in the late 1920s and early 1930s. Buildings of this vintage on the corridor typically feature solid masonry construction, a defined street-level entrance, and apartment layouts organized around the room-count logic of their era — distinct foyers, separated living and dining spaces, and proper bedrooms rather than the open-plan configurations of newer construction. Ceiling heights and original detailing vary by line and renovation history and are best assessed through an apartment-level inspection.
We compare co-op prices and monthly maintenance on a per-room basis where reliable room counts are available. Review the apartment's total maintenance, dimensions and layout as well, and use a consistent room-count definition across comparables: listings count rooms differently (for example, whether a foyer, dining alcove or windowed kitchen is counted), and renovations over the decades may have combined or reconfigured rooms relative to the original plan.
The 114-unit scale implies a range of line types and exposures across the building. Apartment-level exposure, light, and view should be evaluated in person; a prewar building of this size will have meaningful variation between lines.
Building operations
100 Seventh Avenue operates as a prewar cooperative. Day-to-day operations include attended lobby coverage and/or a live-in superintendent, common laundry, and building storage.
Maintenance at a co-op is a monthly charge set by the apartment's shares, which we express per room for comparison. It covers the building's operating costs, the underlying mortgage (if any), and the shareholder's pro-rata portion of real estate taxes — a key structural difference from condominium common charges, which are quoted separately from taxes. Buyers should review the building's financial statements, reserve position, any underlying mortgage and its terms, and recent and planned capital projects during due diligence. For a building of this vintage, the relevant diligence items are the usual prewar ones: façade and Local Law 11 work, elevator modernization, roof and mechanical systems, and the reserve fund's adequacy relative to the building's capital plan.
The Roebling Research Library houses the offering plan, current house rules, recent financial statements, and board meeting minutes for buildings we cover; these are the primary documents for understanding a co-op's operational reality.
Sublet and pied-à-terre policy
A condominium owner leasing a unit and a co-op shareholder subletting are different rules, and a building-wide rule is different from a restriction on one apartment. This is the building's rule; confirm it for the specific apartment.
- Subletting by shareholders
- Permitted with conditionsRestrictedSource: The Roebling Team's building profile
- Pied-à-terre ownership
- Permitted with conditionsCase by case, board discretionSource: The Roebling Team's building profile
Considering an apartment here? Send Corey the listing to discuss the sublet and pied-à-terre rules for that apartment.
Own an apartment here? Request an apartment-specific pricing review.
Monthly carrying charges in recent sales
- Maintenance, per room
- $704 per room a monthMedian of 13 recorded sales since October 2023Source: recorded sales, refreshed October 2026
Maintenance as recorded with each sale. A co-op's maintenance already covers the building's real estate taxes and the building's own mortgage, if it has one; add your own loan payment for the monthly outlay. A summary of recorded sales, not a current bill; charges change.
Building staffing and amenities
- Doorman
- Full-time doormanSource: recent listing records
- Attended lobby
- YesSource: The Roebling Team's building profile
- Live-in superintendent
- YesSource: The Roebling Team's building profile
- Elevator
- YesSource: NYC Department of City Planning records (PLUTO)
- Amenities noted
- Laundry roomSource: The Roebling Team's building profile
Staffing and amenities as our building profile and recent listing records describe them. A feature not listed is not confirmed absent. Outdoor space, parking and some facilities can belong to particular apartments or to a separate owner; confirm access for the specific apartment.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $32,701/yr
- Per unit / month range
- $0 – $24
- Modeled exposure split equally across 114 units (the residential count on the city's lot record). Not an assessed amount; co-op shareholders are typically charged by share allocation.
Source: NYC LL84 benchmarking and PLUTO · The Roebling Research Library. City data last refreshed October 2026.
See full Local Law 97 analysis — emissions history, scenarios, methodology →Facade safety — Local Law 11
The latest available FISP filing classified the facade as Safe — no repairs were required at that inspection. A filed Safe grade is not a guarantee of current condition: owners still maintain the facade and, where required, observe parapets each year. Future inspection timing (Local Law 49 of 2025 changed the cycle framework from October 1, 2026), repair and any assessment decisions remain building-specific.
How to read this, and where it comes from
QEWI = Qualified Exterior Wall Inspector — a licensed professional engineer or registered architect who meets DOB’s FISP qualifications and signs the report (the independent expert, not the managing agent).
Penalties shown are amounts DOB assessed against filings on record across 2005–10 to 2020–25. The FISP dataset does not record whether they were paid, contested or remain open, so treat the figure as history rather than a current balance and confirm the building’s standing with the managing agent.
Source: NYC DOB facade filings (FISP) · The Roebling Research Library. City data last refreshed October 2026.
Recent sales
We compare 100 Seventh Avenue apartments on a per-room basis where reliable room counts are available, alongside size and layout. In general terms, prewar Chelsea co-ops of this scale tend to trade within a per-room band that the building establishes over time across its various lines and apartment sizes; larger, renovated apartments with better light and exposure sit at the top of that band, while units needing work or with weaker exposures sit below it. The monthly maintenance — which we also express per room — is part of what buyers underwrite, because a lower asking price paired with a higher per-room maintenance can net to a similar total cost of ownership.
The building's prevailing per-room range is best read against current recorded transfers and the building's own financials. Recorded apartment sales from NYC Department of Finance transfers appear below; buyer and seller names are not published.
Two factors specific to the co-op form shape resale velocity. First, board approval introduces a screening step that condos do not have, which can lengthen the path from accepted offer to closing. Second, financing and down-payment minimums set by the board — which vary by building and are confirmed at offer stage — define the buyer pool. Both are normal features of co-op ownership and are manageable with preparation.
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 | vs. Ask |
|---|---|---|---|---|
| Sep 15, 2026 | 3C | 1 BA | $505,000 | +4.6% |
| Jun 18, 2026 | 7A | 2 BR · 2 BA | $2,200,000 | -2.2% |
| May 18, 2026 | 7C | 1 BA | $425,000 | -5.3% |
| Mar 18, 2026 | 1A | 1 BR · 1 BA | $995,000 | -7.4% |
| Nov 13, 2025 | 12DG | 2 BR · 1 BA | $1,460,000 | -8.7% |
| Oct 30, 2025 | 9A | 2 BR · 2 BA | $1,917,500 | -1.7% |
| Mar 5, 2025 | 8E | 1 BA | $575,000 | -4.2% |
| Jan 31, 2025 | 2G | 1 BA | $490,000 | -5.8% |
Market read. $/sf is measured on the latest sales with reliable square footage (2025): a median $1,180/sf (floor-adjusted) across 1 sale. The building has traded as recently as 2026. Median listing discount 1.1% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
Other recent transfers
| Date | Unit | Price |
|---|---|---|
| Dec 8, 2009 | 8A | $1,195,000 |
| Jun 30, 2003 | 6A | $835,000 |
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 1-00766-0039). 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.
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At the recent median sale of $580K (10 transfers in the past 24 months, since October 31, 2024), a buyer putting 25% down would pay about $10,725 to close, or 1.8% of the price.
- Mansion tax: $0
- No mortgage recording tax or title insurance on a co-op purchase
- Attorneys, lender, building fees and filings: $10,725
Assumes a resale (the seller pays transfer taxes), a $4,500 attorney fee and a mortgage on the rest.
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What to know if you’re buying
You are buying shares, and the board must approve you. A co-op purchase requires a board package and an in-person interview, and the board's approval is required to close. Build the package thoroughly and present it well; this is the single most consequential step in a co-op purchase.
Compare the apartment per room and on total cost. Confirm the room count (and how foyers, alcoves and kitchens are counted), the apartment's size and layout, and the per-room maintenance at offer stage, and underwrite the total monthly carry — maintenance plus any assessments — alongside the purchase price.
Financing and down-payment minimums vary. Co-op boards set their own financing limits and minimum down payments, and these define what offers are viable. Confirm the building's current financing limit and minimum down payment at offer stage.
Subletting and pied-à-terre use are permitted with conditions. If your plan involves anything other than primary-residence occupancy, confirm the building's current conditions before you commit.
Closings run longer than condos. Between board package preparation, the interview, and approval, a co-op timeline is longer than a comparable condominium closing. Plan accordingly.
Run the diligence a prewar building requires. Review financials, the reserve study, any underlying mortgage, and the building's capital plan — façade/Local Law 11, elevators, roof, and mechanicals are the items that matter most in a building of this vintage.
What to know if you’re selling
Position the apartment on its room count and condition. Per-room figures are one way to compare apartments here; a clean, well-presented apartment with a clear room count and a competitive per-room maintenance shows best.
Prepare your buyer for the board. The most common reason a co-op sale stalls is a buyer who is not ready for the package and interview. Screening for board-readiness — financials, down payment, and use plans consistent with house rules — protects your timeline.
Have the building's financials and policies ready. Buyers and their attorneys will request the offering plan, financials, and house rules early. Having them organized accelerates the process.
Plan for a longer closing. Co-op timelines include board review; price your own next move around that reality.
Comparable buildings
If you're considering 100 Seventh Avenue, also evaluate these nearby Chelsea buildings. Several are condominiums rather than co-ops; we note them as corridor comparables, and your decision between co-op and condo ownership is itself part of the analysis:
- 252 Seventh Avenue (The Chelsea Mercantile) — large prewar conversion on the same avenue; nearby Chelsea peer
- 222 West 14th Street — nearby southern-Chelsea building
- 212 West 18th Street (Walker Tower) — Chelsea prewar-pedigree trophy peer
- 245 Tenth Avenue — nearby West Chelsea building
- 100 Eleventh Avenue — Nouvel-designed West Chelsea peer
- One High Line (76 Eleventh Avenue) — nearby West Chelsea building
For buyers specifically weighing co-op versus condo ownership, the comparison is less about the buildings themselves and more about governance, carrying-cost structure (per-room maintenance inclusive of taxes versus separate common charges and taxes), and use flexibility.
More Chelsea buildings
- 79 Seventh Avenue — 1905 co-op
- 85 Eighth Avenue (The Thomas Eddy) — 1973 condop
- 100 Eleventh Avenue — 2010 condominium by Jean Nouvel
- 100 West 15th Street — 1920 co-op
- 100 West 18th Street — 2006 condominium
- 101 West 14th Street — condominium
The neighborhood
For the full corridor — architecture, transit, and pricing across Chelsea — read The Roebling Team Guide to Chelsea.
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.
Considering a move at 100 Seventh Avenue?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
646.939.7375 · c.cohen@compass.com