It depends on a lot on your timing with the market. This guy (from TFA) sold in 2007; I bought my first house as a (fairly dire) fixer-upper in 2008. I sold it in 2016, after it had more than doubled in value (partly due to improvements we'd made, partly due to market improvements). I bought the next house as a (cosmetic) fixer-upper in 2016, and sold it in 2020, after the pandemic had multiplied its value by 1.5x. Now I own outright, pay no mortgage, and my property tax is less than 1% where I live. Yes I got lucky on timing on both ends of the 12 years, but not selling into a down market (if you can help it, of course), buying with an eye to potential increase in value, and being willing to take advantage of market conditions are all things that can work in your favor.