Dag Hammarskjold Tower

The tower is a well-proportioned early-1980s design, its slab massing relieved by a chamfered corner at 47th Street incised with a vertical center groove — a small piece of detailing that gives the building a recognizable profile on the Second Avenue skyline. The masonry-and-window elevation is straightforward and durable, built for light and the views the height delivers rather than for ornament.

The 229 residences span studios through larger two- and three-bedroom layouts, with the floor plans and exposures varying widely across a 43-story tower. Height and orientation are the levers of value: the upper-floor units with East River, UN, and skyline outlooks command the building's premium, while lower and side-facing homes offer the same full-service building and amenity floor at gentler numbers. Many residences have been renovated over the building's four decades, so condition varies meaningfully across lines.

Dag Hammarskjold Tower runs as a full-service condominium. A 24-hour doorman and concierge, a resident manager, and a service staff support the building. The amenity floor is the building's calling card — a rooftop heated indoor swimming pool, a fitness center, and a landscaped terrace — joined by a children's playroom, bicycle storage, and an on-site parking garage, an unusually deep package for a Turtle Bay building.

As a condominium, there is no co-op board admission, and pied-à-terre ownership and leasing by owners are permitted under the building's documented policy; confirm financing limits and trust or LLC purchases in the current declaration, bylaws and house rules. Pets are welcome, subject to the house rules.

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 $1,208/sf (floor-adjusted) across 4 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 4.0% 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 1-01320-7501; 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 here for the rare Turtle Bay combination: a true high-rise condominium, a rooftop pool and fitness floor, an on-site garage, and big views — all with condominium flexibility rather than a co-op board. The purchase process is lighter than a co-op's, clearing through a right-of-first-refusal in place of a co-op board interview. Leasing by owners and pied-à-terre use are permitted; confirm financing rules in the declaration and bylaws.

Within the building, floor and exposure decide value. The high east-facing lines with the East River and UN outlook are the building's signature product; west and south exposures trade the river view for the Midtown skyline at different price points. Because the building turns over often, a target unit can be benchmarked directly against recent sales of the same line — we help read those comps and assess renovation condition, which varies widely across a tower now more than forty years old.

Present the rooftop pool, garage, specific apartment outlook and location two blocks from the United Nations. Compare prices with dated, matched apartments on Park, Fifth and nearby avenues, and describe the documented ownership rules without assuming a price discount or buyer composition.

Two levers drive the achievable price. First, the view — a high east-facing line with the river and UN outlook is a different (and higher) product than a lower interior unit, and the listing should lead with whatever the residence actually sees. Second, condition — in a 1982 building, an updated kitchen and bath materially shorten time on market. Frequent internal turnover gives a clear, defensible comp set, and a condominium resale clears through a right-of-first-refusal rather than a co-op board, which is itself a selling point.

If you're evaluating Dag Hammarskjold Tower, these nearby Turtle Bay and Midtown East buildings make a useful comparison set:

• 845 United Nations Plaza — high-rise tower near the United Nations
• 300 East 40th Street — Midtown East high-rise nearby
• 321 East 43rd Street — Turtle Bay building near the UN
• 349 East 49th Street — Turtle Bay building to the north
• 425 East 51st Street — Beekman / Turtle Bay building