Condominium · 1984
The Kingsley
400 East 70th Street, New York, NY 10021

The Kingsley (400 East 70th Street)

400 East 70th Street, New York, NY 10021

At a glance
Year built
1984
Type
Condominium
Units
216
Floors
40
Landmark
No
Pets
No pets (strict no-pets policy)
Pied-à-terre
Allowed
Financing
Condominium — no co-op financing cap; confirm current down-payment terms at offer stage
The Data Room

Every recorded sale at this building, 2003–2026

Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.

Median $/sf
$1,230
Listing discount
4.4%
Recorded sales
212
On record
2003–2026

The Kingsley is a 40-story, 216-unit condominium at First Avenue and 70th Street, built in 1984 by developer Ian Bruce Eichner to a Stephen B. Jacobs design notable for its bold stepped massing and rounded balconies. Its signature amenity choice is architectural: the developer placed the fitness center on the 31st floor, with panoramic views and two outdoor terraces, rather than in the base — turning a standard amenity into a skyline experience and giving the building a distinctive identity in the corridor.

Built during the mid-1980s condominium boom as new construction rather than a conversion, The Kingsley offers the transactional flexibility the corridor's cooperative inventory does not: no co-op financing cap, permitted pied-à-terre use, sublets allowed with approval or notice, and condo-fast closings. The full-service baseline — 24-hour doorman and concierge, live-in resident manager, laundry on every floor, direct-access parking garage, bike room, storage, and a residents' lounge — rounds out the offering.

Two honest notes for buyers. First, the building enforces a strict no-pets policy, which is more restrictive than most corridor condominiums and a threshold consideration for pet owners. Second, a building-wide assessment has been in place through April 2026; buyers should confirm its current status and any successor assessment during diligence.

Architecture and unit composition

The 216 residences distribute across the tower's 40 stories in layouts that run from studios through two-bedroom and larger homes, with many units carrying terraces or the building's signature rounded balconies. South and west high-floor exposures are prized for evening light and views. Interior finish quality varies across the inventory; apartment-level diligence is the right reference for any given line and floor.

Jacobs's stepped massing gives the building a sculpted profile on the First Avenue frontage, and the rounded balconies are its most recognizable feature.

Building operations

The Kingsley operates as a full-service condominium with a 24-hour doorman and concierge and a live-in resident manager. The 31st-floor fitness center with its two terraces is the amenity centerpiece, supported by laundry on every floor, a direct-access public parking garage, a bike room, luggage and resident storage, a residents' lounge, and a courtyard.

Two operating points matter for diligence: the strict no-pets policy and the building-wide assessment in place through April 2026. Buyers should confirm the assessment's current status, model the full carry, and review the building's financials and reserve position during due diligence.

Recent sales

The Kingsley trades as a full-service Lenox Hill condominium. Recent closings have run broadly in the $1,237 per square foot range on a building-wide basis, with asking prices somewhat higher; absolute pricing spans from smaller one-bedrooms in the mid-to-high $600,000s to larger high-floor two-bedrooms above $3 million. High-floor south and west exposures carry the premium.

Pricing is heterogeneous by floor, exposure, and layout, and the assessment is a live variable in the near-term carry. Comparable analysis should reference recent closings on the specific line and floor rather than a single building-wide average.

Recent closings 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.

DateUnitApartmentPricePPSFvs. Ask
Mar 17, 20263602
2 BR · 2.5 BA · 1,600 sf
$2,900,000$1,813/sf-1.7%
Feb 5, 20261903
1 BR · 1 BA · 537 sf
$620,000$1,155/sf-3.9%
Feb 5, 2026503
5 BR · 1 BA · 535 sf
$658,000$1,230/sf-2.5%
Nov 17, 2025704
876 sf
$972,000$1,110/sfoff-mkt
Nov 6, 2025306
1 BR · 1 BA · 797 sf
$815,000$1,023/sf-8.9%
Oct 15, 20251208
1 BR · 1 BA · 600 sf
$710,000$1,183/sf-2.1%
Jul 29, 20251702
620 sf
$750,000$1,210/sfoff-mkt
Jul 16, 20251703
1 BR · 1 BA · 535 sf
$685,000$1,280/sf-5.5%

Market read. Most recent trades (2026) cleared a median $1,230/sf across 3 sales. Median listing discount 4.4% 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.

3301 · 1,129 sf+101%
$920,000 ($815/sf) 2003$1,500,000 ($1,329/sf) 2008$1,850,000 ($1,639/sf) 2017
1701 · 767 sf+77%
$620,000 ($808/sf) 2004$1,095,000 ($1,428/sf) 2019
901 · 767 sf+73%
$539,000 2005$840,000 2006$931,500 ($1,214/sf) 2018
2004+72%
$705,000 ($661/sf) 2003$1,240,000 ($1,163/sf) 2008$1,210,000 2021
2002+70%
$995,000 ($865/sf) 2004$1,695,000 2018

Other recent transfers

DateUnitPrice
Jul 7, 2021507$500,000
Jul 12, 20163002$1,650,000
Oct 24, 20131901$950,000
Jul 28, 20091901$819,000
Aug 16, 20051508$575,000
Mar 8, 2005901$539,000
View all 212 recorded sales, sortable

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 1-01464-7501) 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 from recorded condo declarations and offering plans.

What to know if you’re buying

The 31st-floor gym is a distinctive draw. A high-floor fitness center with panoramic views and two terraces is a genuine differentiator.

Condominium flexibility applies. No co-op financing cap, pied-à-terre permitted, sublets allowed with approval or notice, and condo-fast closings.

The strict no-pets policy is a threshold consideration. Confirm before proceeding if you have or plan to have a pet.

Confirm the assessment status. A building-wide assessment has been in place through April 2026; verify its current standing and any successor.

What to know if you’re selling

Lead with the high-floor gym and the balconies. The 31st-floor fitness center and the signature rounded balconies are the building's most marketable features.

Address the assessment proactively. Buyers will ask; have the current status ready.

Price at the line and floor. Exposure and floor drive meaningful variation; reference the specific line's comparables.

Comparable buildings

If you're considering The Kingsley, also evaluate:

The Roebling Team at The Kingsley

The Roebling Team at Compass works extensively across the Upper East Side condominium market, including the Lenox Hill full-service tier. We publish this building profile because Kingsley buyers and sellers deserve building-specific intelligence — amenity structure, assessment context, transactional mechanics, and comparable analysis at the apartment level — not generic neighborhood commentary.

If you're considering a purchase or sale at The Kingsley, a 30-minute consultation is the right starting point.

The neighborhood

For the full corridor — architecture, schools, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.

Considering a move at The Kingsley?

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Corey Cohen, Principal · The Roebling Team at Compass
646.939.7375 · c.cohen@compass.com