- Year built
- 1923
- Type
- Cooperative
- Landmark
- Designated
Every recorded sale at this building, 2006–2026
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- 3BR median
- $2M
- Recent range
- $1.3M – $2M
- Listing discount
- -2.8%
- Recorded transfers
- 32
The Mimosa at 310 West 85th Street sits on one of the Upper West Side's best residential blocks — a tree-lined stretch between West End Avenue and Riverside Drive, a few steps from Riverside Park. Built in the early 1920s to designs by Gaetan Ajello, one of the architects most associated with the West Side's gracious pre-war apartment houses, it is a nine-story Romanesque Revival cooperative of 36 homes that has all the detail and proportion of its era. For buyers who want authentic pre-war West Side living near the park, at a sensible price point, it is a quietly excellent option.
The building's character is its calm competence: an intimate co-op, well maintained, with period apartments that have been thoughtfully updated for contemporary life. It is the kind of address that owner-occupants stay in for decades — which is part of why inventory here is genuinely scarce.
Architecture and unit composition
Ajello's design gives the building a handsome brick-and-stone street presence in the Romanesque Revival mode, with the masonry detailing and dignified scale typical of the West End/Riverside blocks. The plan is built around four apartments per floor — with one apartment reserved for the live-in superintendent — yielding a small, low-density community.
There are two principal layouts: a four-room, one-and-a-half-bath home, and a larger five-room residence convertible to three bedrooms with three baths. Most apartments retain their period charm — the proportions, light, and detail of 1920s construction — while having been updated to accommodate modern living. The result is a building of real pre-war character that lives comfortably today.
Building operations
The Mimosa runs as a well-kept, owner-occupied cooperative. A live-in superintendent and a live-in resident manager are on staff, and the building carries the practical amenities residents rely on: a refurbished elevator, a bike room, a laundry room, and full-sized storage bins that transfer with the apartments — a genuine convenience that many comparable buildings can't offer. There is no doorman; this is a self-service entry building, which is reflected in its sensible, lower carrying costs.
On board policy, pets are welcome — a meaningful draw on the dog-friendly Upper West Side. Purchases clear through the customary cooperative board application and interview, and buyers should plan for the documentation and reserves a pre-war co-op expects.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $32,134/yr
- Per unit / month range
- $0 – $74
Facade safety — Local Law 11
Safe to live in today — but the last inspection flagged repairs that are due on a deadline, so facade work and its cost are coming. Whether that’s a real concern depends on the scope, the timing, and how the building plans to pay for it — reserves or an assessment — which is exactly what we’d dig into for you.
QEWI = Qualified Exterior Wall Inspector — the licensed engineer the city requires to sign the report (the independent expert, not the managing agent). Source: NYC DOB facade filings (FISP) · The Roebling Research Library.
See the full facade history →Recent sales
Recent transfers at this building, curated by The Roebling Team research desk. Apartment-level facts are independently verified before publishing; sale prices reflect the recorded transfer amount at the NYC Department of Finance.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Apr 22, 2026 | 8A | 3 BR | $2,029,881 | +6.8% | |
| Jul 24, 2024 | 6C | 2 BR · 1.5 BA | $1,285,000 | +2.8% | |
| Jun 11, 2024 | 6B | 3 BR · 2 BA · 1,500 sf | $1,840,000 | $1,227/sf | -2.9% |
| May 31, 2023 | 7B | 3 BR · 2.5 BA | $2,050,000 | +3.8% | |
| Sep 15, 2022 | 3C | 2 BR · 2 BA | $1,317,500 | -5.6% | |
| Aug 2, 2022 | 3D | 2 BR · 1.5 BA | $1,402,000 | +8.3% | |
| Jul 19, 2022 | 4C | 2 BR · 1,000 sf | $587,500 | $588/sf | off-mkt |
| Jan 14, 2022 | 4D | 2 BR | $1,350,483 | +3.9% |
Market read. Most recent trades (2024) cleared a median $1,227/sf across 1 sale. Median listing discount 1.6% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Other recent transfers
| Date | Unit | Price |
|---|---|---|
| Mar 24, 2017 | 7B | $1,820,516 |
| Sep 29, 2016 | 4A | $1,450,000 |
| Aug 21, 2012 | 5C | $1,020,491 |
| Jun 24, 2010 | 9A | $1,025,000 |
| Oct 22, 2009 | 6C | $820,000 |
| Sep 19, 2006 | 9D | $1,000,000 |
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01246-0039) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. 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.
What to know if you’re buying
The appeal here is location and value. You are buying a genuine pre-war apartment on a prime West End–to–Riverside block, steps from Riverside Park, in a pet-friendly co-op with reasonable carrying costs. The absence of a doorman keeps maintenance lower than at full-service buildings nearby — a real plus for budget-conscious buyers who don't need attended-lobby service. Be ready for a standard co-op board process, and act promptly when a layout you want appears, since the building doesn't turn over often.
What to know if you’re selling
Sellers should lead with the block, the park proximity, the preserved pre-war detail, and the building's practical strengths — pet-friendliness, transferable storage, and sensible maintenance. Those features widen the buyer pool and distinguish a Mimosa apartment from generic West Side inventory. Price against recent trades in comparable West End/Riverside pre-war co-ops, adjusted for floor, light, and renovation level, and present the period character at its best, since that is what this building's buyers are looking for.
Comparable buildings
If you're weighing The Mimosa, also consider these nearby Upper West Side pre-war cooperatives:
- 302 West 86th Street — pre-war co-op a block north
- 305 West 86th Street — full-service West End building nearby
- 316 West 84th Street — pre-war co-op one block south
- 324 West 83rd Street — pre-war West Side cooperative
- 320 West 86th Street — large West End Avenue co-op
The Roebling Team at The Mimosa
The Roebling Team at Compass specializes in the Upper West Side, the Riverside and West End Avenue corridors, and Manhattan's pre-war cooperative market. We publish this profile because buyers and sellers in intimate, well-run co-ops like The Mimosa deserve building-specific intelligence — the layouts, the board rules, the carrying-cost picture, and where pricing sits against the immediate comparison set.
If you're considering a purchase or sale at 310 West 85th Street, a 30-minute consultation is the right starting point.
Get the full picture on this building.
Current availability including off-market, the full comp set, and the board & financials read most listings don't show.