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Diamond House (170 East 77 Street)
Diamond House (170 East 77 Street) is a Yield-Oriented condo that behaves as a "Tale of Two Cities." While efficient 2-bedroom units generate strong rental growth (+33% on Unit 8B) and liquidity, the building functions as a wealth trap for large-format inventory. Despite the NYXRCSA index hitting an all-time high of 331.14 in 2025, 4-bedroom resale values in this building have collapsed, with Unit 10A realizing a 33% nominal loss ($1.4M) from its 2015 peak. Long-term holders have also suffered; Unit 5D sold for less in 2022 than it did in 2007. Investors should view 2BR units as functional yield plays (entry <$1,300 PPSF), but avoid large combinations where liquidity freezes (270+ days DOM) and capital destruction is proven.
Arcadia (408 East 79 Street)
Arcadia (408 East 79 Street) is a Yield-Oriented condo that currently functions as a wealth trap for equity investors. Despite the NYXRCSA index hitting an all-time high of 331.14 in 2025, resale values in this building have structurally regressed. Unit 19A realized a 14% nominal loss after a 19-year hold ($2.72M $\to$ $2.34M), and Unit 5D lost 16% from its 2016 peak. While rental yields are functional (~$65–$69 PPSF), large unit rents have shown deflationary trends (-8.7% on Unit 14B). Investors should view this as a distressed asset, avoiding entry above $1,250 PPSF to mitigate the proven risk of capital erosion.
The Siena (188 East 76 Street)
The Siena (188 East 76 Street) is a Yield-Oriented condo that functions as a "generic luxury" utility asset but a wealth trap for equity investors holding 3-bedroom units. Despite the NYXRCSA index hitting an all-time high of 331.14 in 2025, resale values in this building have structurally regressed. Unit 24B realized an 11% nominal loss after a 9-year hold ($3.2M $\to$ $2.85M), and Unit 18B traded flat (-1%) between 2017 and 2025. While the building generates high nominal rental income ($15k–$26k/mo), the Penthouse has actually seen nominal rent deflation of 7% over the last decade. Investors should view this as a consumption asset, avoiding entry above $1,600 PPSF to mitigate the proven risk of capital erosion.
Gallery Apartments (32 East 76 Street)
Gallery Apartments (32 East 76 Street) is a Yield-Oriented boutique condo that functions as a wealth trap for equity investors who entered during the 2013–2014 peak. Despite the NYXRCSA index hitting an all-time high of 331.14 in 2025, resale values in this building have structurally regressed. Unit 1505 realized a 13.2% nominal loss after a nearly 11-year hold ($2.65M $\to$ $2.30M),. While the building offers utility with rentals trading near $70 PPSF, the income stream is unstable, evidenced by Unit 505's 15% rent decline and vacancy periods exceeding 300 days for other units. Investors should view this as a distressed asset, avoiding entry above $1,400 PPSF to mitigate the proven risk of capital erosion.