The Department of Housing and Urban Development establishes the rent adjustment factors — called Annual Adjustment Factors (AAFs) — on the basis of Consumer Price Index (CPI) data relating to changes in residential rent and utility costs.
FY 2025 AAF Metro Lookup Tool
This system provides complete documentation of the AAF geographic areas. Users can choose from a list of counties (and New England towns) identified by state and metropolitan area. After selecting the desired geography, the user is provided a page containing the geographic summary and data sources used to calculate the AAF inflation factor.
(Effective December 3, 2024)
Preamble (*.pdf, 293 KB);
Schedule C (Table 1, .pdf, 317 KB, Table 2 .pdf, 317 KB, both Tables, .xlsx, 122 KB);
AAF Calculation Methodology (*.docx, 38 KB)
CPI Region Table link
FY 2024 AAF Metro Lookup Tool
This system provides complete documentation of the AAF geographic areas. Users can choose from a list of counties (and New England towns) identified by state and metropolitan area. After selecting the desired geography, the user is provided a page containing the geographic summary and data sources used to calculate the AAF inflation factor.
(Effective May 3, 2016)
Preamble (*.pdf, 200 KB)
Tables (.pdf, 182 KB, .docx, 36 KB)
Area Definitions Table (*.pdf, 116 KB)
(Effective February 9, 2015)
Preamble (*.pdf, 155 KB)
Tables (.pdf, 182 KB, .docx, 36 KB)
Area Definitions Table (*.pdf, 116 KB)
(Effective February 18, 2014)
Preamble (*.pdf, 156 KB)
Tables (*.pdf, 167 KB)
Area Definitions Table (*.pdf, 118 KB)
(Effective May 22, 2013)
Preamble (*.pdf, 207KB)
Tables (*.pdf, 94 KB)
Area Definitions Table (*.pdf, 76 KB)
(Effective April 13, 2012)
Preamble (*.pdf, 178 KB)
Tables (*.pdf, 176 KB)
Area Definitions Table (*.pdf, 160 KB)
Contract Rent AAFs (Effective March 16, 2011)
Preamble (*.pdf, 114 KB)
Tables (*.pdf, 35 KB)
Renewal Funding AAFs (Effective May 10, 2011)
Preamble (*.pdf, 151 KB)
Tables (*.pdf, 66 KB)
Area Definitions Table (*.pdf, 36 KB)
(Applies to both AAFs)
(Effective February 10, 2010)
Contract Rent AAFs
Preamble (*.pdf, 122 KB)
Tables (*.pdf, 68 KB)
Renewal Funding AAFs
Preamble(*.pdf, 38 KB)
Tables (*.pdf, 49 KB)
Area Definitions Table (*.pdf, 70 KB)
(Effective January 12, 2009)
Preamble (*.pdf, 178 KB)
Tables (*.doc, 75 KB)
Area Definitions Table (*.doc, 134 KB)
(Effective January 22, 2008)
Preamble (*.pdf, 148 KB)
Tables (*.doc, 85 KB)
Area Definitions (*.doc, 134 KB)
(Effective February 1, 2007)
Preamble (*.pdf, 104 KB)
Tables (*.doc, 56 KB)
Area Definitions (*.doc, 68 KB)
(Effective December 1, 2005)
Preamble (*.pdf, 150 KB)
Tables (*.doc, 106 KB)
Area Definitions (*.doc, 56 KB)
(Effective January 14, 2005)
Preamble (*.pdf, 115 KB)
Tables (*.pdf, 36 KB)
Area Definitions (*.pdf, 109 KB)
(Effective September 16, 2003)
Federal Register Notice Preamble (*.pdf, 96 KB)
Tables (*.pdf, 64 KB)
(Effective January 22, 2003)
Federal Register Notice (*.pdf, 1,133 KB)
Tables(*.doc, 42 KB)