238 East 84th Street
238 East 84th Street, New York, NY 10028
Yorkville, Upper East Side
BBL 1015290031 · BIN 1048712
- Year built
- 1962
- Type
- Cooperative
- Units
- 22
- Floors
- 5
- Landmark
- No
- Pets
- Cats permitted; dogs generally not permitted — confirm at offer stage
- Subletting
- Limited; permitted on a restricted basis subject to board policy — confirm at offer stage
Every recorded sale at this building, 2004–2024
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- Studio median
- $326K
- Recent range
- $320K – $332K
- Listing discount
- 2.2%
- Recorded transfers
- 36
238 East 84th Street — Cornasesk House — is a small, self-managed cooperative in the heart of Yorkville, on East 84th Street between Second and Third Avenues. It is a boutique building of modest, efficient homes, run lean by the shareholders themselves, with a maintenance structure that folds in heat, hot water, and unlimited laundry. For the buyer who wants an entry point into the Upper East Side at a genuinely accessible price — a first apartment, a pied-à-terre, or a low-carry city foothold — the building is a clean, sensible proposition.
The appeal is straightforward: a well-run studio-scale co-op in a prime Yorkville location, close to the Q train at 86th Street and the 4/5/6 at 86th and Lexington, with the retail, restaurants, and everyday convenience of the neighborhood at the door.
Building operations
The cooperative is run self-managed and characteristically lean: an elevator, a shared laundry room with unlimited use included in maintenance, and heat and hot water included. There is no doorman — appropriate and cost-efficient for a boutique studio co-op of this scale, and a meaningful factor in keeping maintenance contained.
As a cooperative, ownership is by shares rather than deed: purchases require board approval and a board interview, financing is capped at a board-set percentage, and pied-à-terre and co-purchase arrangements are evaluated case by case. Cats are permitted; dogs generally are not. Subletting is limited and restricted by board policy. The exact financing maximum, any flip tax, and current sublet and pet rules vary by board policy and should be confirmed at offer stage.
Local Law 97
This building is below the 25,000 sq ft threshold at which LL97 emissions caps apply. No regulatory capital pressure from this law specifically, current or 2030.
See full Local Law 97 analysis →Recent sales
Co-op pricing is read on a per-room basis, and Cornasesk House trades as a boutique studio-scale cooperative — modest units, contained carrying costs, and one of the more accessible entry points to the Upper East Side. With only 22 residences, resale volume is thin: a small number of closings in an active year, running mostly through studios and the occasional combined unit. Demand here is driven by the Yorkville location, the low carrying costs, and the value a self-managed co-op structure offers relative to condominium alternatives. When underwriting a purchase or a list price, capture the room count, the floor, the exposure, and the renovation condition rather than relying on a neighborhood average.
Recent transfers at this building, curated by The Roebling Team research desk. Apartment-level facts are independently verified before publishing; sale prices reflect the recorded transfer amount at the NYC Department of Finance.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Dec 26, 2024 | 4B | 1 BA | $332,462 | -2.2% | |
| Oct 22, 2024 | 2B | 1 BA | $320,000 | -1.5% | |
| Jan 17, 2024 | GA | 1 BA · 300 sf | $260,000 | $867/sf | -3.3% |
| Dec 1, 2022 | 5A | 1 BA | $360,000 | -8.9% | |
| Jan 5, 2022 | 5C | 1 BR · 1 BA | $415,000 | -2.1% | |
| Dec 2, 2021 | 2C | 1 BA · 340 sf | $340,000 | $1,000/sf | +1.5% |
| Jun 29, 2018 | 5C | $390,000 | -2.3% | ||
| Oct 18, 2016 | 3A | 475 sf | $425,000 | $895/sf | +0.0% |
Market read. Most recent trades (2024) cleared a median $867/sf across 1 sale. Median listing discount 2.2% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Other recent transfers
| Date | Unit | Price |
|---|---|---|
| May 16, 2013 | 4A | $330,000 |
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 1-01529-0031) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. 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.
What to know if you’re buying
This is a cooperative, so the path is a board package and interview, a financing cap set by the board, and underwriting of the building's financials and house rules. Note the operational realities up front: this is a self-managed building with laundry, heat, and hot water included, but no doorman, which suits buyers who value low carry over full-service amenities. Cats are permitted; dogs generally are not, and subletting is limited — confirm both at offer stage. Review the co-op's financials, reserve, and any planned capital work given the building's age.
The reasons to buy are the value and the location: an accessible Yorkville entry point with heat, hot water, and unlimited laundry folded into maintenance, in a well-run self-managed building on a convenient Upper East Side block.
What to know if you’re selling
The story is accessibility and location. A well-run, self-managed Yorkville co-op with low carrying costs and a prime block address sells to first-time buyers, pied-à-terre purchasers, and value-minded Upper East Side buyers. Pricing is an apartment-specific exercise: room count, floor, light, and condition drive the number more than any block average. We position the value narrative, prepare the buyer for the co-op process and the self-managed operation, and benchmark against the right comparable tier of boutique Upper East Side cooperatives.
Comparable buildings
If you're considering 238 East 84th Street, also look at these Yorkville and Upper East Side boutique cooperatives:
- 200 East 84th Street — Upper East Side building on the same block
- 103 East 84th Street — boutique Upper East Side cooperative nearby
- 114 East 84th Street — nearby Upper East Side building
- 200 East 83rd Street — Upper East Side building one block south
- 8 East 83rd Street — Upper East Side cooperative nearby
The neighborhood
For the full corridor — architecture, schools, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.
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.
Considering a move at Cornasesk House?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at Cornasesk House 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.