390 Riverside Drive

Fifteen floors over a lot of roughly 12,850 square feet, with about 157,000 square feet of building — a fuller, denser envelope than the 1900s houses to the north, and a taller one. The building is built out to its lot lines on both street frontages, so the light story is exposure-driven: Riverside Drive lines face the park and the Hudson; West 111th Street lines run east toward Broadway; interior lines face the lot.

The apartment mix runs from smaller one- and two-bedroom layouts through large classic pre-war plans with separated entertaining and sleeping wings. Combinations have reduced the count from the plan-era number to 106, so line-to-line variation is significant and floor plans do not repeat cleanly through the building. DOB alteration filings on record show a steady stream of individual apartment renovations across the last fifteen years, which is a useful signal: it is a building where the board approves work and shareholders do it.

A staffed, union house — building employees are covered by the SEIU Local 32BJ collective agreement — with an attended lobby, a furnished roof deck, a fee-based exercise room, central laundry and storage. Heat is gas; the audited statements record a completed gas conversion, with the forecast built on the resulting fuel savings.

Capital posture, from the audited statements on file. The corporation contracted in 2019 for a Local Law 11 facade restoration at a revised contract value of roughly $2.45 million, of which about $2.16 million had been paid by the most recent year-end on file, with retainage accrued. That is a large program for a building of this size; the statements show most of the contract paid, but completion of the work and the timing of the next Local Law 11 cycle need confirming. The reserve fund stood near $995,000 at that year-end, down from roughly $1.70 million the prior year as capital spending drew it down; capital improvements on the balance sheet have risen by roughly $700,000 in each of the last two reported years.

The corporation runs a recurring annual assessment sized to the citywide co-op tax abatement — most recently about $2.71 per share, which is close to what the abatement returns. Practically, that means shareholders should read the abatement credit on their tax bill as offset rather than as savings. Maintenance rose 3.0 percent effective January 2022 and 6.8 percent effective January 2023, the latter reflecting real estate taxes that now run over $1.2 million a year and are the corporation's single largest expense.

The audited statements record small operating losses after depreciation in each of the two most recent reported years, against positive income from operations before depreciation. Depreciation affects that accounting result, but positive operating income before depreciation does not by itself establish financial health. Read current cash flow, reserves, debt and capital commitments alongside the current statements.

Flip tax: the greater of 2 percent of gross sale price or 15 percent of profit, paid by the seller; 5 percent of gross price on sponsor units. This is the policy item most likely to surprise a seller here. The 15-percent-of-profit test exceeds the 2 percent test whenever defined profit is more than about 13.3 percent of the sale price; on an apartment bought in the 1990s or 2000s, check that threshold first, and where it is passed the difference can be six figures. Model it before you set a price.

Financing ceiling and minimum down payment: not published. Buildings of this vintage and conversion era on the upper Drive commonly sit somewhere between 70 and 80 percent maximum financing, but that is a corridor pattern, not this building's rule — get the current purchase requirements from the managing agent.

Post-closing liquidity and debt-to-income standards: not published. Assume the board applies a stated liquidity requirement and a debt-to-income ceiling; ask for both in writing before you write an offer.

Subletting: permitted with board approval and a fee — the audited statements show sublet-fee income in each reported year — but that income alone does not establish sublet volume. Seasoning, maximum term and the fee schedule are not published.

Pied-à-terre, trusts, LLCs, guarantors and co-purchase: not established in the reviewed records. The flip tax and sublet-fee income do not establish permissions for these uses; obtain the current written policy and reconcile it with the governing documents.

Sponsor units: the sponsor still held about 3.5 percent of shares at the most recent year-end on file and has been selling down. Sponsor apartments carry a 5 percent transfer fee and are not board-approval transactions in the ordinary sense; if you are shown one, the diligence is different.

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. Most recent trades (2026 to date) cleared a median $806/sf (floor-adjusted) across 3 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 3.2% 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 1-01894-0031). 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.

Get the current purchase requirements before you bid. Financing ceiling, minimum down, post-closing liquidity and debt-to-income are not published for this building. They are the four numbers that decide whether your offer is real.

Update the debt and façade evidence. The reviewed records describe a 2.99 percent mortgage maturing April 2031 and substantial payments toward a Local Law 11 program. Payment progress is not confirmation of completion or current financial health. Confirm both in the most recent audited statement and facade filing, along with reserves and any live assessment.

Read the abatement assessment correctly. The recurring assessment is tied to the co-op tax abatement; reconcile the assessment, the abatement credit and the maintenance for the specific apartment, and model your carry on maintenance plus assessment, not on maintenance alone. Run the True Monthly Carrying Cost Calculator.

Historic district rules apply. Exterior work runs through LPC under the Morningside Heights designation — not the Riverside–West End designation. Windows, through-wall units and any facade-visible alteration need that path.

Don't confuse the buildings. 390, 395 and 404 Riverside are three different corporations on two different tax blocks with three different flip taxes and three different balance sheets. Comparables must be drawn building by building.

Model the flip tax before you price. Greater of 2 percent of gross or 15 percent of profit. The profit test governs whenever defined profit exceeds about 13.3 percent of the sale price, and on a long hold the fee can be substantial. Build it into your net-proceeds analysis at the outset: compute both tests from the governing definition, since the Seller Closing Cost Calculator takes a flip tax only as a percentage of sale price.

Market the balance sheet. The 2021 refinancing at 2.99 percent through 2031, the undrawn line of credit and the facade program in the statements are attorney-verifiable and they answer the questions buyers ask about pre-war co-ops; confirm the facade work's completion before presenting it as finished. We supply the underlying documents from the Research Library to serious buyers' counsel.

Lead with exposure. Park-facing Riverside Drive lines are the building's premium product and should be priced against the corridor's park-front inventory, not against generic Morningside Heights stock.

Be plain about the assessment. The abatement-offset assessment recurs; disclose it up front, reconciled against the specific apartment's abatement credit and maintenance. That prevents the carrying-cost surprise that kills deals late.

If you're considering 390 Riverside Drive, also evaluate:

• 395 Riverside Drive (The Matincote) — Ajello, 1924–25, same developer entity, same block, one corner north at West 112th; the closest like-for-like in the city
• 404 Riverside Drive (The Strathmore) — Schwartz & Gross, 1908–09, at West 113th; the earlier, smaller, no-sponsor alternative
• 375 Riverside Drive — Ajello park-front co-op at Cathedral Parkway
• 370 Riverside Drive — the Cathedral Parkway corner co-op on block 1893
• 355 Riverside Drive — park-front pre-war co-op a few blocks south
• 345 Riverside Drive — pre-war Drive co-op at West 106th
• 340 Riverside Drive — the West 106th corner house
• 325 Riverside Drive — pre-war park-front co-op in the 105th Street group
• 314 Riverside Drive — smaller pre-war Drive co-op at West 104th
• 300 Riverside Drive — George F. Pelham park-front co-op at West 102nd