200E21

BKSK's exterior is its argument: a layered masonry envelope, modeled and set back to manage light and air, that reads as substantial and rooted rather than as another glass curtain wall. The environmental engineering is woven into that envelope — insulation, glazing, and mechanical systems chosen to hit LEED Gold and to lower the building's carbon and operating profile.

The 67 residences run from one- through four-bedroom layouts, capped at five homes per floor so that most apartments enjoy multiple exposures and corner light. Interiors carry a warm, tactile finish program: wide-plank oak floors, oversized windows, open kitchens with stone counters and integrated appliances, and stone-clad baths. Ceiling heights and window proportions are scaled to new construction, and the upper floors capture open views over the low-rise Gramercy roofscape. Select homes carry private outdoor space, and the building's filtered-air-and-water systems extend the sustainability story into the residences themselves.

The shared program is unusually rich for a 67-unit building. A 24-hour doorman and concierge staff the lobby; a resident manager is on site. The amenity suite centers on a skylit wellness floor with a sauna and a treatment room, paired with a fully equipped fitness center, a residents' lounge with an entertaining kitchen, a media room, and a children's playroom. A landscaped roof terrace with native plantings and stone pathways crowns the building. Practical back-of-house — package room, bicycle room, private storage, central laundry — rounds it out.

As a condominium, the building bills common charges and real-estate taxes per unit. Pets are permitted, washer/dryers are standard in the homes, pied-à-terre ownership is permitted, and leasing by owners is permitted with conditions; confirm the current terms in the declaration and house rules. Purchases clear through a right-of-first-refusal rather than a board interview.

Recent sales

Recent closings 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.

Market read. Most recent trades (2026 to date) cleared a median $1,977/sf (floor-adjusted) across 2 sales. Floor-adjusted means each sale is restated to a constant mix of floors, so the figure can differ from the plain median of the sales listed above. Median listing discount 2.3% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-00901-7501; each condominium apartment is its own tax lot). 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 from recorded condo declarations and offering plans.

Buy the building for condominium ownership a block from Gramercy Park: no co-op board interview, purchases clear a right-of-first-refusal process, and pied-à-terre use is permitted. Confirm financing limits and trust or entity ownership in the current declaration and bylaws.

Underwrite the sustainability story, don't just accept it. The building received LEED Gold certification, and its envelope and filtered air and water were designed for efficiency and indoor air quality; check the actual effect in the current operating budget, utility history and system-maintenance records before you pay for it. Target multi-exposure and upper-floor homes for light and views, and confirm which homes carry outdoor space, since those are the scarcest and most sought.

Finally, weigh the location precisely. You are a block off Gramercy Park — close enough to enjoy the neighborhood's quiet, with Union Square, the Flatiron, and the East Side's transit all within easy reach — without the responsibilities or restrictions of a park-key co-op.

Lead with the differentiators: a BKSK-designed, LEED Gold condominium with a skylit wellness suite and a rooftop garden, in a neighborhood where new ownership product essentially does not exist. That scarcity, plus the sustainability and amenity story, is the seller's strongest hand.

Benchmark to the newest downtown and Gramercy-area condominiums rather than to the surrounding pre-war co-ops; a resale here competes on finishes, light, wellness amenities, and operating efficiency, not on the price-per-foot of older buildings. Market upper-floor, multi-exposure, and outdoor-space homes on exactly those attributes. And remember that the closing path itself is a selling point — a right-of-first-refusal and condominium timeline is faster and more predictable than a co-op board package, which appeals to the flexibility-minded buyer this building attracts.

If you're weighing 200 East 21st Street, also evaluate nearby Gramercy and downtown ownership product:

• 32 Gramercy Park South — postwar (1956) Gramercy Park cooperative
• 34 Gramercy Park East — historic Gramercy Park cooperative
• 50 Gramercy Park North — full-service Gramercy condominium and hotel
• 205 Third Avenue — nearby Third Avenue cooperative