306 West 100th Street

The facade is the building's signature. A rusticated stone base sits above a brick basement, with Flemish-bond brickwork rising through the shaft, two-story Ionic pilasters, a carved door surround with a bracketed lintel, terra-cotta lintels accented with green glazed roundels, balconies and balconettes, and a deep copper cornice crowning the whole. It is a confident Beaux-Arts composition of 1910, and the historic-district designation means that character is protected — exterior alterations route through landmarks review.

Behind the limestone, the 32 residences carry the pre-war virtues that define the neighborhood: hardwood floors, defined rooms, generous closets, and the ceiling heights and light of pre-war construction, with the better light on the upper floors and the western exposures toward the park. The mix runs from one-bedroom homes to larger layouts, with renovation levels varying apartment to apartment.

306 West 100th Street operates as a self-service cooperative with a live-in superintendent, an elevator, and a marble lobby, supported by a central laundry room, a bicycle room, and private storage. It is not a doorman building ; compare the actual maintenance and assessments with similarly situated apartments.

On house rules, the building is pet-friendly, allowing both dogs and cats — a meaningful draw on a block where families and dog-owners gravitate toward Riverside Park. As at any cooperative, purchases require board approval and a full board package, and the board reviews financing and financials in line with a quality Upper West Side co-op; subletting is governed by the board rather than open to investors, keeping the building largely owner-occupied. A serious buyer's representative will confirm the building's current financing cap and sublet terms from the financials and house rules before an offer, and the historic-district status governs exterior work.

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 (2021): a median $971/sf (recorded) across 1 sale. The building has traded as recently as 2026. Median listing discount 1.5% 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 1-01888-0076). 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. The value proposition is genuine Beaux-Arts pre-war character and a park-block address at a self-service co-op's efficient carrying cost — underwrite the maintenance and any assessment history against the 32-unit base, and read the financials for the building's reserve position and any capital plans, which weigh more in a smaller building.

The pet-friendly policy makes this a practical building for the dog-owning, park-oriented buyers the block attracts. For an owner-occupant who wants pre-war detail, a limestone facade, and Riverside Park at the end of the street without paying below-86th prices, the building's mix of character, location, and reasonable costs is the core of the case. The historic-district protection is itself a long-term asset, locking in the streetscape that draws buyers here.

Lead with the architecture and the block. A 1910 Beaux-Arts facade, a marble lobby, Riverside Park steps away, and protection within the Riverside–West End Historic District Extension II are precisely the qualities that distinguish a listing here from generic inventory, and they reward strong presentation.

Benchmark to renovated pre-war co-ops on the Riverside-and-West-End blocks at the north end of the neighborhood; a well-renovated, higher-floor home with good light should price toward the top of that set, while the building's relative value to the blocks below 86th is itself a selling point to value-minded pre-war buyers. Coming to market with current financials and the building's pet and sublet posture clearly stated removes friction. Check the recent transfer history and current competing listings before judging turnover or buyer demand.

If you're considering 306 West 100th Street, these nearby Upper West Side cooperatives make a useful comparison set:

• 275 West 96th Street — nearby comparison; confirm ownership and construction era in its own records
• 250 West 94th Street — Upper West Side cooperative peer
• 150 West 95th Street — pre-war co-op nearby
• 160 West 95th Street — Upper West Side cooperative a few blocks south
• 255 West 108th Street — pre-war cooperative to the north