The Corvallis house you didn’t buy in 2005
A $300,000 house at 2005’s average index level, tracked to 2026 Q2.
The metro index went from 155.4 (the 2005 average) to 406.9 in 2026 Q2, 2.6× its 2005 level. That makes a $300,000 purchase about $785,357 today.
With 20% down ($60,000) and a 30-year loan at 2005’s average rate of 5.87%, today’s equity is about $666,559, 11× the down payment.
The same $60,000 down payment, put in an S&P 500 index fund instead (the TSP C Fund, dividends reinvested), was worth $580,431 at the end of August 2026, the latest month the fund has reported at tsp.gov.
Run your own numbers for 2005 →
House figures are estimates for the whole metro market, from the FHFA index. Not financial advice.
FAQ
What is a 2005 Corvallis house worth today?
About $785,357 for a $300,000 house, a 2.6× market multiple to 2026 Q2 by the FHFA all-transactions index for Corvallis, OR.
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.