320 West 89th Street

Pelham clad the building in red-and-black brick laid in Flemish bond — a deliberate, decorative bond pattern rather than plain running brick — set over a limestone base and trim. It is a confident, well-detailed pre-war facade of its moment, more textured than the era's plainer apartment houses, and it sits comfortably among the period buildings on the block.

The 36 residences carry the pre-war virtues buyers come to the neighborhood for: hardwood floors, real room separation, generous closet space, and the ceiling heights and light that 1920s construction delivers, particularly in the upper-floor homes oriented toward the park and the monument. The unit mix runs from one- and two-bedroom layouts to larger combinations, with renovation levels varying apartment to apartment — some kitchens and baths fully modernized, others awaiting a buyer's hand.

320 West 89th Street operates as a well-maintained boutique cooperative with an attentive live-in superintendent, an elegant marble lobby, and an elevator, supported by a common laundry room, a bicycle room, and private storage included with the apartments. It is a self-service building rather than a doorman house ; assess operating costs from the actual budget and financial statements rather than the service label.

On house rules, the building is welcoming where it counts. It is pet-friendly. Subletting is permitted on a case-by-case, board-governed basis, which keeps the building predominantly owner-occupied while giving shareholders flexibility when life requires it. As at any cooperative, purchases require board approval and a complete board package; prospective buyers should review the building's current financing posture and financial statements during diligence, both of which a serious buyer's representative will obtain before an offer.

Recent sales

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.

Market read. $/sf is measured on the latest sales with reliable square footage (2024): a median $934/sf (floor-adjusted) across 1 sale. The building has traded as recently as 2026. Median listing discount 0.5% 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 1-01250-0047). 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.

This is a board-approval cooperative, so plan for a full financial package and an interview. Because the building is a boutique self-service co-op, compare actual carrying costs and pre-war character with the service and amenities offered elsewhere — underwrite the maintenance and any assessment history against the 36-unit base, and confirm the building's reserve position in the financials.

The pet-friendly policy and case-by-case sublet posture make this a practical building for owner-occupants who may need flexibility down the road. For a buyer prioritizing a Riverside Park block, genuine pre-war rooms, and a smaller cooperative, evaluate the specific apartment’s exposure, condition, documents and terms; a preferred layout does not establish a predictable marketing period or require a rushed decision.

The selling story is strong and specific: a Pelham pre-war on a coveted Riverside Park block, Flemish-bond brick, a live-in super, and pet-friendly, flexible house rules. Lead with the block and the park orientation — those are the qualities Upper West Side buyers search for first — and let condition do the rest.

Benchmark to renovated pre-war co-ops on the West End–to–Riverside blocks rather than to the broader Upper West Side average; an upper-floor, well-renovated home with park light should price at the top of that set. Coming to market with current financials in hand and the building's pet and sublet policies clearly stated removes friction for buyers and shortens the path to contract. Because turnover is modest, a sharp listing can capture buyers who have been waiting specifically for this block.

If you're considering 320 West 89th Street, these nearby Upper West Side cooperatives make a useful comparison set:

• 316 West 84th Street — pre-war co-op a few blocks south toward Riverside
• 255 West 90th Street — full-service pre-war cooperative one block north
• 285 Riverside Drive — Riverside Drive pre-war co-op overlooking the park
• 280 Riverside Drive — park-front pre-war rental building nearby
• 258 Riverside Drive — Riverside Drive cooperative peer