Applying the System Asset Pricing Model
Decision Accounting

Applying the System Asset Pricing Model to Commercial Real Estate: Measuring the System Welfare Cost of the Office Vacancy Crisis and Urban Hollowing

core-claim
Core claim

CRE distress imposes 7.78 in system welfare cost for every 1 of private payoff

The System Asset Pricing Model (SAPM) shows that office vacancy and extend-and-pretend forbearance create a welfare multiplier: private gains to CRE incumbents (13B/yr) trigger 101B/yr in losses to non-consenting third parties.

theory-failure
Why pigou and coase fail

Standard externality tools can't fix CRE because costs are dispersed and captured

Pigouvian taxation requires real-time measurability, jurisdictional authority, and political feasibility — all absent in CRE. Coasean bargaining fails because transaction costs are catastrophic: over 100 million affected parties, structural information asymmetry, and endemic holdout problems.

channels
Six welfare channels

Banking fragility, municipal erosion, pension losses, service worker displacement, transit collapse, and regulatory capture

Each channel is measured independently from public data. Banking fragility alone threatens 1,871 banks above the 300% CRE-to-equity threshold; 44% of office loans are in negative equity.

payoff-decomp
Private payoff decomposition

Four tiers of incumbents capture $13B/yr through tax deferrals, extend-and-pretend, and stale pricing

Office REITs and direct landlords capture 37% of private payoff, primarily via the 10.2B/yr 1031 exchange tax deferral. Commercial lenders and CMBS servicers capture 30% through net interest income on 384B in rolled loans.

monte-carlo
Monte Carlo calibration

100,000 draws yield median βW = 0.01 with 90% CI [6.5, 9.3]

The system beta is estimated from independent distributions for each channel's welfare cost and private payoff. The probability that βW < 1 is 0.0000% — the welfare multiplier is statistically certain.

extend-pretend
Extend-and-pretend amplifier

Deferring $384B in loan maturities compounds welfare cost by freezing price discovery

Extend-and-pretend does not reduce system welfare cost — it amplifies it by trapping capital in zombie assets, preventing adaptive reuse, and delaying the eventual loss. Japan's Lost Decades (not the RTC) is the correct counterfactual.

cross-domain
Cross-domain comparison

CRE βW = 0.01 ranks between frontier AI (7.4) and monoculture agriculture (8.6)

The SAPM taxonomy places CRE as an institutional SOT — remediable through policy redesign, not an impossibility theorem. The welfare multiplier is high enough to warrant urgent action but lower than PFAS (9.5) or antimicrobial resistance (11.2).

remediation
Proven remediation

Calgary, NYC, and the RTC show intervention is feasible within 24 months

Calgary's office-to-residential conversion subsidy (75/sq ft) cut downtown vacancy from 32% to 28%. New York's 'City of Yes' zoning unlocks 100M sq ft for conversion, yielding 50,000–70,000 housing units and 200M/yr in property tax revenue.

implications
What changes

CRE is not a market correction — it is a system welfare transfer that policy can reverse

The SAPM calibration shows that 88% of welfare costs fall on non-consenting parties. Three institutional redesigns — conversion subsidies, zoning reform, and a resolution authority — can eliminate the private extraction surplus within 24 months.