The New York-to-Philadelphia decision presents a clear tension: household housing benchmarks fall sharply, while a rental owner’s topline yield screen barely changes. During IRS SOI migration 2022-2023, 17,010 tax-return households moved from New York to Philadelphia, accompanied by 27,695 exemptions, a people proxy. The corridor represented 6.52% of New York’s outbound returns and 22.28% of Philadelphia’s inbound returns. Those percentages benchmark an observed tax-filer flow; they do not identify renters, every mover or future demand.
Zillow observations dated 2026-06-30 show the immediate housing-cost contrast. ZORI asking rent was $3,573 in New York and $1,928 in Philadelphia, a monthly difference of $1,645 and an annual difference of $19,740. The metro Zillow home-value benchmark, ZHVI, was $735,003 in New York and $394,762 in Philadelphia, a difference of $340,241. These are metro screens, not quotes for a target apartment or transaction evidence for a particular property.
For rental underwriting, Philadelphia’s lower rent sits beside a lower home-value benchmark: the topline gross-yield screens are 5.83% in New York and 5.86% in Philadelphia. That narrow contrast is not net operating income or return evidence. The next underwriting question is property-specific: after taxes, insurance, utilities, concessions, management, maintenance, capital work, financing and local regulation, what cash flow remains at the actual contract price and rent roll?

