436 East 84th Street (Claiborne House)
436 East 84th Street, New York, NY 10028
Yorkville, Upper East Side
BBL 1015630032 · BIN 1050470
- Year built
- 1963
- Type
- Cooperative
- Units
- 94
- Floors
- 11
- Pets
- Pets permitted (with board approval)
- Flip tax
- 2% of sale price, paid by the buyer
Every recorded sale at this building, 2003–2026
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- 1BR median
- $730K
- Recent range
- $485K – $1.1M
- Listing discount
- 2.5%
- Recorded transfers
- 93
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at Claiborne 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.
436 East 84th Street — Claiborne House, whose cooperative corporation uses the 444 East 84th address for the 436–444 parcel — is a well-run, financially sound full-service Yorkville cooperative with the residential package a primary-home buyer looks for: doorman, concierge, private garage, balconies on many lines, and a settled owner-occupant culture. It is a classic Yorkville co-op, and its value proposition is stability and services at accessible far-eastern Upper East Side pricing.
The building's appeal is fundamentally about full-service, owner-occupied living at Yorkville value. On a tree-lined block between First and York, it offers a 24-hour doorman, concierge, a private residents' garage, and private balconies on many apartments — a service package that competes with far pricier corridors — while its classic co-op rules (restricted subletting, no pied-à-terre) reinforce a stable, resident-first community. For buyers who want a primary home in a serious, well-capitalized building, Claiborne House is a structural fit.
Its reputation for financial soundness is part of the story. The building is known as a well-run cooperative, and its distinctive lending library is a small but telling marker of a community that invests in shared amenity.
Architecture and unit composition
Claiborne House is an 11-story postwar cooperative of roughly 94–95 units, built in 1963 on the 436–444 East 84th Street parcel and converted to cooperative ownership in 1985. The red-brick facade features a canopied entrance, consistent fenestration, private balconies on many lines, discreet through-wall air conditioning, and sidewalk landscaping on a tree-lined block. The architect is not publicly documented.
The apartment mix runs from one-bedrooms through two-bedrooms and larger combined units, with balconied lines a recurring feature. The building's owner-occupant culture is reinforced by its restricted subletting policy and the absence of pied-à-terre ownership.
Building operations
Claiborne House operates as a full-service cooperative with a 24-hour doorman, concierge, live-in superintendent, elevator, a private residents' garage (typically with a waitlist), central laundry room, bike room, and a lending library. It does not have a gym or roof deck.
Financing is capped at 75% (25% minimum down payment). The flip tax is 2% of the sale price, paid by the buyer; this should be confirmed against the current proprietary lease and house rules. Subletting is restricted under classic co-op rules; pied-à-terre ownership is not permitted, while co-purchasing and gifting are allowed. As with any cooperative, board approval and a board interview are required.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $53,570/yr
- Per unit / month range
- $0 – $47
- Modeled exposure split equally across 95 units (the city tax-lot count). Not an assessed amount; co-op shareholders are typically charged by share allocation.
Source: NYC LL84 benchmarking and PLUTO · The Roebling Research Library. City record last verified September 2026.
See full Local Law 97 analysis — emissions history, scenarios, methodology →Facade safety — Local Law 11
The latest available filing classified the facade as SWARMP — Safe With A Repair and Maintenance Program: the engineer identified conditions requiring monitoring or repair, with repairs due by the deadline stated in the filing. The scope, timeline, and how the building funds the work are building-specific — we review the filings and board materials for you.
How to read this, and where it comes from
QEWI = Qualified Exterior Wall Inspector — the licensed engineer the city requires to sign the report (the independent expert, not the managing agent).
Source: NYC DOB facade filings (FISP) · The Roebling Research Library. City record last verified September 2026.
Recent sales
Claiborne House trades as a stable, owner-occupied full-service Yorkville cooperative, with value expressed on a per-room and per-share basis. Pricing reflects the far-eastern Upper East Side value equation and the building's primary-home orientation: one-bedrooms and two-bedrooms form the core of the stock, with larger combined units above them and balconied and higher-floor lines commanding premiums. As with any cooperative, per-room value is best read within a unit's specific line, floor, exposure, and condition rather than a single building average.
Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
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 |
|---|---|---|---|---|---|
| Aug 20, 2026 | 3F | 2 BR · 2 BA | $1,070,000 | +1.9% | |
| Jul 10, 2026 | 6B | 1 BR · 1 BA | $730,000 | +0.0% | |
| Mar 2, 2026 | PHE | 4 BR · 3.5 BA | $2,200,000 | +0.0% | |
| Aug 6, 2025 | 6F | 2 BR · 2 BA | $1,150,000 | +0.0% | |
| Jul 8, 2025 | 6C | 2 BR · 2 BA | $1,150,000 | +0.0% | |
| Feb 28, 2025 | 10B | 1 BR · 1 BA | $757,500 | -2.3% | |
| Nov 5, 2024 | 7B | 1 BR · 1 BA · 850 sf | $730,000 | $859/sf | -3.8% |
| Jun 20, 2024 | 1C | 2 BR · 2 BA · 1,100 sf | $849,000 | $772/sf | -26.7% |
Market read. $/sf is measured on the latest sales with reliable square footage (2024): a median $825/sf (floor-adjusted) across 2 sales. The building has traded as recently as 2026. Median listing discount 2.7% 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 |
|---|---|---|
| Dec 3, 2009 | PH11F | $695,000 |
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 1-01563-0032). 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.
At the recent median sale of $1.07M (7 transfers since 2024), a buyer putting 25% down would pay about $23,263 to close, or 2.2% of the price.
- Mansion tax: $10,700
- No mortgage recording tax or title insurance on a co-op purchase
- Attorneys, lender, building fees and filings: $12,563
Assumes a resale (the seller pays transfer taxes), a $4,500 attorney fee and a mortgage on the rest.
Keep up with Claiborne House and its market
The Roebling Report, monthly: Manhattan sales data and analysis, including buildings like Claiborne House. Unsubscribe anytime.
We’ll use your email for The Roebling Report and note your interest in this building. See our privacy policy.
What to know if you’re buying
This is a primary-home building. Restricted subletting and no pied-à-terre reinforce a stable, owner-occupant community — a plus for buyers seeking that, a constraint for investors.
Full-service package at Yorkville value. Doorman, concierge, private garage, and balconies on many lines, at accessible far-eastern UES pricing.
Note the buyer-paid flip tax. The 2% flip tax is a buyer cost here — factor it into your acquisition math and confirm against current house rules.
Financing is capped at 75%. Plan for a minimum 25% down payment and standard post-closing liquidity review.
Board approval and a board interview are required. Build the cooperative timeline into your plan.
What to know if you’re selling
Lead with stability and services. A well-run, financially sound full-service building with a private garage is the marketing story.
Highlight the balcony where you have one. Private outdoor space is a value driver on this corridor.
Set buyer expectations on the flip tax. The 2% buyer-paid flip tax affects buyer math — address it early.
Prepare buyers for the board. A clean board package and realistic financial and use-policy guidance shorten the path to approval.
Comparable buildings
If you're considering 436 East 84th, also evaluate:
- 400 East 84th Street — nearby Yorkville building
- 401 East 84th Street — nearby Yorkville building
- 450 East 83rd Street — nearby Yorkville building
- 525 East 82nd Street (The Mansion House) — nearby Yorkville cooperative
More Upper East Side buildings
- 435 East 65th Street — 1963 co-op
- 435 East 76th Street — 2000 condop
- 436 East 66th Street — 1910 co-op
- 436 East 86th Street — 1973 co-op
- 437 East 86th Street — 1961 co-op
- 439 East 88th Street — 1915 co-op
The neighborhood
For the full corridor — architecture, 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.
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 Claiborne House?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.