The measured starting point is the IRS corridor. In the SOI 2022–2023 release, 8,105 tax-return households associated with 15,025 exemptions moved from Miami to Port St. Lucie, carrying $668,979 thousand in reported adjusted gross income. That is evidence of a substantial filing-household flow toward the destination. IRS flow means tax-return households: it does not identify renters, every mover or future housing demand. The result should frame the corridor, not be converted into a claim that the same number of leases or purchases followed.
For household housing costs, Port St. Lucie shows lower market benchmarks. Zillow’s June 2026 asking-rent readings were $2,347 in Port St. Lucie and $2,695 in Miami; home values from the same monthly observation were $383,710 and $476,598, respectively. Separately, BEA’s 2024 housing price-level index was 113.642 at the destination and 155.551 at the origin. These measures point consistently toward a lower destination housing-cost level, although none establishes the rent, purchase price or total monthly cost for a particular household.
For rental-property underwriting, the move changes the entry-price and revenue screen, not merely the tenant’s monthly payment. Based on the Zillow pair, Port St. Lucie’s gross-yield screen is 7.34% versus Miami’s 6.78%; it is not a net return. Risk does not move in the same favorable direction: the destination’s annual FEMA building-loss ratio is 0.3761% versus 0.1935% in Miami, with hurricane listed as the top hazard in both. The next underwriting question is whether property-specific achievable rent, vacancy, insurance, taxes, association costs, maintenance and financing preserve the market-level spread after expenses.

