- Year built
- 1946
- Flip tax
- 2.5%, buyer-paid (higher than the 2% standard)
15 East 91st Street is the Schultze & Associates / Columbia School of Architecture postwar cooperative on the Carnegie Hill mansion blockfront — adjacent to the historic Otto Kahn / Convent of the Sacred Heart mansion block and the James Burden / Andrew Carnegie mansions on East 91st Street.
The structural identity rests on three features. First, the Columbia School of Architecture collaboration — the academic-design provenance is uncommon among postwar Carnegie Hill cooperatives. Second, the mansion-block adjacency — 15 East 91st sits among the most architecturally consequential Gilded Age residential blocks in New York, directly adjacent to the Carnegie mansion (now Cooper-Hewitt Museum) and the Convent of the Sacred Heart (former Otto Kahn mansion). Third, the no-subletting policy — significant for buyer screening; the policy materially narrows the investor-buyer pool.
Important policy flags: subletting is NOT allowed, the flip tax is 2.5% (higher than the 2% Carnegie Hill standard), and financing is capped at 50% (conservative).
Recent sales
Apartment-level closing detail should be sourced from NYC Department of Finance recorded transfers for full transactional context.
What to know if you’re buying
The no-subletting policy is structurally significant. Plan primary-residence positioning at the application stage; the policy materially narrows the investor and pied-à-terre buyer pool.
The 2.5% buyer-paid flip tax is higher than the Carnegie Hill 2% standard. On a $3 million purchase, $75,000 of additional buyer cost.
The 50% financing maximum is conservative. Plan for substantial down payment; verify post-closing liquidity expectations at application.
The Schultze & Associates / Columbia School of Architecture pedigree is real institutional context. The academic-design provenance is uncommon among postwar Carnegie Hill cooperatives.
The mansion-block adjacency is among the most architecturally consequential urban contexts in Manhattan. Cooper-Hewitt Museum, Convent of the Sacred Heart, James Burden Mansion all within steps.
The Douglas Elliman PM management is real institutional infrastructure. Verify board package requirements and pied-à-terre policy directly.
Closing timelines are cooperative-standard. Plan for 6 to 10 weeks from contract through board approval to closing.
Comparable buildings
- 17 East 89th Street — Ajello 1924; nearby Carnegie Hill peer
- 131 East 93rd Street — Braun 1923 neo-Federal; nearby Carnegie Hill peer
- 14 East 90th Street — Carpenter 1928; nearby Carnegie Hill peer
- 47 East 87th Street — 1947 postwar; same-vintage Carnegie Hill peer
- 50 East 89th Street (Park Regis) — Emery Roth & Sons 1974; nearby Carnegie Hill modernist peer
The Roebling Team at 15 East 91st Street
The Roebling Team at Compass specializes in Central Park West, the Upper East Side, and the broader Park-facing Manhattan market. If you're considering a purchase or sale at 15 East 91st, a 30-minute consultation is the right starting point.
Corey Cohen · The Roebling Team at Compass 646.939.7375 · c.cohen@compass.com
Sources: CityRealty building page; Douglas Elliman Property Management building page; Corcoran building page; NYC Landmarks Preservation Commission Carnegie Hill Historic District Designation Report (LP-0834, 1974 / LP-1834, 1993); NYC Department of Finance recorded transfers.