The Sebastian house you didn’t buy in 1988
A $300,000 house at 1988’s average index level, tracked to 2026 Q2.
The metro index went from 85.8 (the 1988 average) to 457.5 in 2026 Q2, 5.3× its 1988 level. That makes a $300,000 purchase about $1.60M today.
With 20% down ($60,000) and a 30-year loan at 1988’s average rate of 10.34%, today’s equity is about $1.60M, 27× the down payment. The loan would be paid off by now, so the equity equals the house’s value.
The same $60,000 down payment, put in an S&P 500 index fund instead (the TSP C Fund, dividends reinvested), was worth $3.71M at the end of August 2026, the latest month the fund has reported at tsp.gov.
Run your own numbers for 1988 →
House figures are estimates for the whole metro market, from the FHFA index. Not financial advice.
FAQ
What is a 1988 Sebastian house worth today?
About $1.60M for a $300,000 house, a 5.3× market multiple to 2026 Q2 by the FHFA all-transactions index for Sebastian-Vero Beach-West Vero Corridor, FL.
Why use an index instead of listings?
The FHFA index is built from repeat transactions on the same homes, so it controls for the mix of what happens to be for sale.
Is this investment advice?
No. This is historical arithmetic for education and entertainment.