How Rent Is Determined 1-3% Rule Hud Fair Market Rent Pros Cons Source: [Federal Register](https://www.huduser.gov/portal/datasets/fmr/fmr2013p/Trend_Comments.pdf) Review of Alternative Tending Methodologies. One commenter addressed each of the alternative trending methods suggested in the notice. The commenter states that it does not support Alternative 1 (use of overall Consumer Price Index (CPI) data) because local and regional CPI provides a more accurate FMR calculation for specific geographic areas than national CPI data.