Say you are pricing a two-bedroom co-op on the Upper East Side this fall. You open the Q3 2026 numbers and see that the East Side resale co-op median slipped 1% from a year earlier, to $1.098M. That reads like a soft market with room to negotiate. The same table has the median two-bedroom co-op at $1.475M, up 12% from $1.320M a year ago. If you bring the first number to an offer on a two-bedroom, you are working from a figure that measured something else.
Every headline median in Corcoran's Third Quarter 2026 Manhattan report works this way for the East Side. Corcoran is our brokerage, and its East Side submarket is the closest available proxy for the Upper East Side. Co-ops, resale condos and new development each moved in a direction that a closer look reverses. The median here is a census of what happened to trade. It is not a price index, and the gap between those two things matters most at the moment you write an offer.
The East Side's Q3 2026 headline and what sits underneath it
Start with the East Side as a whole. In Q3 2026 it posted 820 closed sales, down 1% from a year earlier. The median price rose 4% to $1.355M, while average price per square foot fell 4% to $1,581. Inventory fell 3% to 1,321 listings, and average days on market dropped 14% to 89. So the typical sale cost more while the typical square foot cost less. Both can be true only if the homes that sold this year differed from last year's in size, type or building.
The three segments show where that happens:
| Q3 2026, East Side | Headline median | Change from Q3 2025 | What the detail shows |
|---|---|---|---|
| Resale co-ops | $1.098M | -1% | Median per square foot up 2%; one-, two- and three-plus-bedroom medians up 5%, 12% and 13% |
| Resale condos | $1.895M | +8% | Median per square foot flat at $1,441; two-bedroom median flat; three-plus-bedroom and studio medians each down 11% |
| New development | $3.140M | -20% | A closing wave at one lower-priced conversion; the three-plus-bedroom median rose 22% |
All three run against their own headlines. Each one bears on a different kind of purchase.
Co-ops got more expensive at nearly every size while the median fell
These are the full East Side resale co-op figures for Q3 2026 against Q3 2025. Studios held at $425K against $427K. One-bedrooms rose to $655K from $625K. Two-bedrooms rose to $1.475M from $1.320M, and three-plus-bedrooms rose to $3.225M from $2.850M. Median price per square foot rose 2% to $994.
No bedroom category got cheaper, yet the overall median fell. Statisticians call this a composition effect. If a larger share of this summer's co-op closings were studios and one-bedrooms, the midpoint of all sales moves down even while each size rises. The averages say the top of the market also gave some ground. Average co-op price fell 7% to $1.875M and average price per square foot fell 5% to $1,264. A few lighter trades at the high end pull an average down much more than they move a median.
For a co-op buyer, the useful figure is the line for your bedroom count. That line has the larger East Side co-ops rising faster than the smaller ones. Sellers of family-size units had a firmer Q3 than the -1% headline suggests.
Condos sold at higher prices without costing more per foot
Resale condos run the other way. The East Side median rose 8% to $1.895M in Q3 2026, and 18% from Q2's $1.613M. Median price per square foot didn't move, at $1,441 against $1,446 a year earlier. Average price fell 14% to $2.247M and average price per square foot fell 9% to $1,659.
By bedroom count, studios fell 11% to $590K, one-bedrooms rose 10% to $930K, two-bedrooms held at $1.995M against $1.999M, and three-plus-bedrooms fell 11% to $3.213M. The median rose while the per-foot price stayed put and the largest homes got cheaper. That pattern fits a quarter in which more of the condos that closed were mid-size homes, each selling at about last year's rate per square foot. An 8% gain describes the mix of what closed. It does not describe East Side condos as a group getting 8% dearer.
Volume adds a second signal. Across Manhattan, resale condo closings jumped 15% in Q3 2026 to 1,266, and Corcoran notes that every submarket except the East Side posted a year-over-year gain. So the borough's busiest resale condo quarter in years went past the East Side, and the larger condos that did trade there sold for less than a year earlier. Buyers shopping for three-plus-bedroom condos this fall have support in the data for negotiating. Buyers shopping for two-bedrooms have a flat comparison.
The 20% new-development drop is mostly one building
East Side new development shows the biggest gap of all. In Q3 2026 the median fell 20% to $3.140M, the average fell 28% to $3.786M, and median price per square foot fell 22% to $1,802 from $2,323. The one-bedroom median dropped 58% to $1.085M, and the two-bedroom median dropped 46% to $1.900M. Read without context, those figures look like a price collapse.
The same report names the cause. East Side sponsor closings nearly doubled in Q3, and Corcoran credits closings at The Strathmore, 400 East 84th Street, as one driver. The Strathmore is Related Companies' 144-unit conversion of a long-time rental tower into condominiums, with interiors by Tony Ingrao. Sales are marketed by Corcoran Sunshine, an affiliate of our brokerage. Its pricing was always set below the East Side new-development norm. The Real Deal reported in December 2025 that one-bedrooms started at $1.1 million and the largest four-bedrooms topped out around $5.5 million, describing the building this way:
"Pricing is running relatively affordable for the area."
The Real Deal later reported, citing Marketproof, that the building signed 38 contracts in Q2 2026 at an average ask above $1,700 per square foot. Contracts signed in spring close in summer. When dozens of homes asking about $1,700 a foot close in the same quarter, a submarket whose new-development median had been $2,323 a foot gets pulled down hard. The East Side's Q3 one-bedroom new-development median of $1.085M sits almost exactly at the Strathmore's $1.1 million starting ask. That doesn't prove each closing price. It is the result you would expect if one building's one-bedrooms made up much of that bedroom category this quarter.
The three-plus-bedroom line confirms the point. The East Side's largest new-development homes rose 22% to a $5.869M median. If developers had been cutting prices across the board, the largest units would show it too.
What the co-op, condo and new-development signals add up to
Each segment's headline missed in its own direction. The co-op median understated rising prices, the condo median overstated them, and the new-development median turned one building's closings into what looked like a discount.
The Manhattan picture shows why getting this right matters now. Borough-wide, Q3 2026 closings rose 9% to 3,625 and the median hit a record $1.25M. Signed contracts fell 6% to 2,532, the slowest third quarter since 2023. Corcoran attributes the slowdown to rising mortgage rates, New York's new pied-à-terre tax, limited new listings and low supply in prime neighborhoods. Brick Underground's October 2 coverage noted that the drop in contracts could mean weaker closings in Q4. The Q4 medians will again reflect which homes happen to trade, so the same reading applies when they come out.
For a buyer comparing an East Side listing this fall, that comes down to a short sequence:
- Find the median for your bedroom count and ownership type, co-op or condo, and set the neighborhood median aside.
- Compare the asking price per square foot with the segment's median per-foot figure, which held flat for resale condos at $1,441 and rose to $994 for co-ops in Q3 2026.
- For new development, find out which buildings closed in the period before reading a price change as a discount.
- Check the quarter-over-quarter line as well as the year-over-year one. The East Side resale condo median moved 18% in a single quarter.
FAQ
Is Corcoran's "East Side" the same as the Upper East Side? It is a statistical submarket, and the report doesn't print its street boundaries. Treat it as the closest available read on the Upper East Side, not as an exact match.
Are these Q3 2026 figures final? Not quite. Corcoran's methodology notes that current-quarter closed and contract figures reflect transactions reported when the report was prepared, projected through quarter-end, and that prior-quarter numbers are revised in the next report.
Do other Q3 reports agree? On Manhattan as a whole, broadly yes. The Real Deal's October 2 analysis by Jonathan Miller also puts the median at $1.25M, with sales up 8% and the median up 5.9%. Corcoran's figures are up 9% and up 4%. The series are defined differently, so small gaps are expected.
What do days-on-market figures leave out? Corcoran excludes new development from its days-on-market calculation, because many unsold sponsor units are held off the market. The East Side's 89-day average therefore describes resales only.
If you are pricing an East Side co-op or condo this season and want comparisons by bedroom count and price per foot for your type of home, not the neighborhood median, the Kirsten Jordan Team will build that analysis with you before you list or make an offer. Inquire Now.
