125 Central Park North

1. BUILDING OVERVIEW (ANALYST FRAMING)

• Building Type: Postwar Resale Condo (Built 2005).

• Scale: 11 Floors, 17 Units.

• Primary Category: Appreciation-Driven.

• Secondary Category: Cyclical.

Justification: Post-sponsor data indicates an ultra-boutique, top-heavy building that suffers from intense secondary market friction but successfully compounds wealth over long hold periods. Early sponsor sales cleared at baselines of $660–$1,137/SF in 2006. While the asset experienced a distinct trough during the 2009 financial crisis (dropping to $770/SF), it matured into a robust mid-cycle peak between 2014 and 2017 ($1,100–$1,240/SF). Crucially, the building maintained significant price strength into the late 2021–2024 cycle, pushing to new baseline highs between $1,060–$1,466/SF. By compounding its equity base and holding late-stage value, it effectively mirrors the long-term upward trajectory of the NYXRCSA benchmark, which reached historic all-time highs of 330–333 in late 2025 and early 2026. However, crippling DOM friction (155 to 232 days) entirely precludes it from achieving a Core/Defensive classification.

2. UNIT MIX & COMPOSITION

Based on historic sales data and transaction weighting across 31 recorded sales segments:

• 1BR: ~6% of sales volume (2 past sales).

• 2BR: ~42% of sales volume (13 past sales).

• 3BR+: ~52% of sales volume (16 past sales).

Influence on Liquidity & Rent Behavior: The building is extraordinarily top-heavy, dominated almost entirely by massive 3BR and 2BR footprints. The severe lack of a 1BR segment deprives the building of a functional, high-velocity liquidity engine. Consequently, the massive footprints dictate the building's operational rhythm, resulting in extreme structural drag on the sales market (frequently requiring 5 to 8 months to find specialized buyers) and highly volatile, destructive vacancy intervals on the rental market when family-sized units turn over.

3. LINE (STACK) PERFORMANCE — RESALE ONLY

A. Liquidity

• Fastest Resale Velocity: True high-velocity liquidity does not exist on the mature secondary market. The absolute fastest normalized resale on record (Unit 5A, a 3BR) still required 57 days to clear.

• Slowest Resale Velocity: The building experiences punishing liquidity crises across its core inventory. Standard resales carry extreme structural drag: Unit 4B sat for 232 days, PH4 sat for 170 days in its recent 2024 clear, and previously sat for 155 days during its 2009 clear.

B. Price Strength

• Resale pricing demonstrates high durability and line-level premium persistence. Penthouse lines (PH5, PH3) successfully command deep premiums, securing $1,230–$1,466/SF baselines in recent years. Standard 2BR and 3BR units hold a steady, defensible plateau settling between $960–$1,120/SF.

C. Appreciation

• Lines have compounded robustly over the long term. Holders who entered during the 2006 sponsor clearance phase or the 2009 trough captured significant structural equity (+30% to +35%) into the mature 2022–2024 phase, actively avoiding the late-cycle mean-reversion that plagues competing Upper Manhattan inventory.

4. BUILDING-WIDE PPSF TREND (NORMALIZED)

• 2006 (Sponsor Clearance): Initial volume heavily clustered between $660–$1,137/SF.

• 2009–2012 (Trough / Early Maturation): Severe cyclical pullback, testing lows of $682–$854/SF.

• 2014–2017 (Mid-Cycle Peak): Strong recovery achieving pricing power in the $1,118–$1,241/SF bracket.

• 2021–2024 (Late Cycle Maturation): Continued growth and stabilization, pushing upward to $1,060–$1,466/SF. Conclusion: Compounding. The building successfully absorbed cyclical shocks and pushed to new structural highs in the late cycle, strictly tracking the upward macro growth proven by the NYXRCSA index.

5. RENT CAPTURE ANALYSIS

A. Rent Capture by Line & Unit Type

• Formula: Effective Annual Rent = Achieved Rent × (365 − Rental DOM) ÷ 365.

• Example 1 (High Efficiency): Unit PH2 (1BR). Achieved $4,500/mo. DOM 27. Effective Rent = $4,500 × (365 - 27) ÷ 365 = $4,167/mo.

• Example 2 (Moderate Leakage): Unit 4B (2BR). Achieved $4,150/mo. DOM 23. Effective Rent = $4,150 × (365 - 23) ÷ 365 = $3,888/mo.

• Example 3 (Severe Leakage): Unit 6B (2BR). Achieved $5,000/mo. DOM 97. Effective Rent = $5,000 × (365 - 97) ÷ 365 = $3,671/mo.

• Example 4 (Catastrophic Leakage): Unit PH5 (3BR). Achieved $5,500/mo. DOM 128. Effective Rent = $5,500 × (365 - 128) ÷ 365 = $3,571/mo.

B. Rent Appreciation Nominal rent per SF functions adequately, yielding $38 to $58/SF depending on the era and layout. The rare 1BR and standard 2BR lines can absorb reasonably well (18 to 27 days). However, true rent capture is highly volatile on the dominant 3BR and penthouse lines; unpredictable localized DOM spikes (e.g., 75, 97, and 128 days) create devastating cash flow leakage that heavily erodes realized yields for landlords holding massive footprints.

6. B³ SCORING SYSTEM (0–100)

• Liquidity Score: 30

  • Speed: Failing. Normalized resale DOM frequently stretches from 155 to 232 days.

  • Consistency: Low. Extreme holding friction defines the secondary market.

• Rent Capture Score: 60

  • Efficiency: Moderate nominal ($38–$58/SF).

  • Absorption: Volatile. Strong baseline rates on smaller units are severely compromised by 90 to 128-day rental DOM outliers on core 3BRs.

• Appreciation Score: 85

  • Durability: Excellent structural compounding from original baselines and early troughs. Post-sponsor values are highly resilient, tracking the NYXRCSA index stability to reach historic highs late in the cycle.

7. COMPOSITE SCORE & CLASSIFICATION

Composite Score = (30 × 0.35) + (60 × 0.30) + (85 × 0.35) = 58.25. Category Assignment: Appreciation-Driven. The asset's robust compounding behavior acts as its sole structural strength. Punishing holding costs in the sales market and highly volatile rental leakage entirely prevent it from operating as a Hybrid or Defensive asset.

8. TRANSACTION EXAMPLES (REQUIRED)

Resale Appreciation (Structural Compounding):

1. Unit PH5 (3BR): Sep 2006 Sponsor Baseline ($1,104/SF) → May 2022 Resale ($1,466/SF). Held 15.6 years. +32.7% change (CAGR ~1.8%). Driver: Sponsor price normalization + Market regime timing.

2. Unit PH4 (3BR): Aug 2009 Trough Buy ($774/SF with 155 DOM) → Sep 2024 Resale ($1,060/SF with 170 DOM). Held 15.0 years. +36.9% change (CAGR ~2.1%). Driver: Market regime timing.

3. Unit 5A (3BR): Aug 2006 Sponsor Baseline ($1,051/SF) → Jun 2016 Resale ($1,127/SF with 57 DOM). Held 9.8 years. +7.2% change. Driver: Market regime timing.

4. Unit 4B (2BR): Sep 2006 Sponsor Baseline ($815/SF) → Dec 2012 Resale ($854/SF with 232 DOM). Held 6.2 years. +4.7% change. Driver: Market regime timing + Liquidity shift (DOM change).

Resale Depreciation (Macro Trough Shocks): (Note: Because this asset structurally compounded into the late cycle, true depreciation is strictly limited to the 2008–2009 financial crisis trough).

1. Unit PH4 (3BR): Aug 2006 Sponsor Baseline ($1,051/SF) → Aug 2009 Trough Sell ($774/SF with 155 DOM). Held 3.0 years. -26.3% change. Driver: Market regime timing + Liquidity shift (DOM change).

9. RISKS & RED FLAGS

• Chronic Illiquidity on Core Layouts: The building's massive 3BR and 2BR inventory routinely sits for highly destructive intervals on the sales market (155 to 232 days), representing intense secondary friction.

• Rental Yield Leakage on Large Units: Landlords holding 3BR and Penthouse layouts are heavily exposed to volatile vacancy; outsized rental DOMs (75 to 128 days) completely destroy up to 30% of a year's gross yield.

• Avoid: Purchasing any unit under the assumption of short-term liquidity. The steep cost of time completely neutralizes theoretical equity gains if a fast exit is required; this building demands a 7-to-10 year time horizon.

10. EXECUTIVE SUMMARY

125 Central Park North is an ultra-boutique, Appreciation-Driven postwar condo that has demonstrated highly durable long-term wealth compounding but aggressively punishes investors requiring liquidity. The building's core operational rhythm is severely dragged down by its dominant 2BR and massive 3BR inventory, which lacks a high-velocity buyer pool, resulting in destructive 155 to 232-day waits for mature resale clears. Despite this profound secondary friction, pricing has proven remarkably resilient, compounding from 2009 troughs up to a robust $1,060–$1,466/SF baseline in the 2022–2024 cycle, directly mirroring the long-term durability of the NYXRCSA benchmark. Investors must treat this strictly as an illiquid store of value, strictly avoiding the assumption that these massive footprints will offer efficient secondary exits or frictionless, high-margin rental yields.

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