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State, one year

Washington in 2018

Index change and building permits for the year, with every county.

In 2018 the FHFA house price index for Washington changed +9.2%, against +5.7% for the United States and +10.2% in 2017.

47,746 housing units were authorised by building permits in the state that year (23,676 single-family), +4.3% on 2017; the national total was 1,328,827.

+9.2%Washington index, 2017–2018US +5.7%
47,746housing units permitted in 201823,676 single-family
39 of 39counties with a rising indexmedian county +9.2%
1,328,827units permitted nationally in 2018
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Counties in 2018

Ranked by the county index change from 2017 to 2018 (FHFA annual county index). Permits are units authorised in 2018; per 1,000 uses the vintage 2025 population.

CountyIndex change 2018Units permittedSingle-familyPer 1,000
Grays Harbor County+12.6%4634555.9
Spokane County+11.4%2,9261,6965.2
Pierce County+11.3%5,4492,4915.8
Cowlitz County+10.9%3182942.8
Franklin County+10.9%6166166.0
Mason County+10.9%2762663.9
Kitsap County+10.7%1,1499034.1
Pacific County+10.7%131945.4
Kittitas County+10.4%62943512.9
Lewis County+10.4%2752713.1
Skagit County+10.4%5855424.4
Yakima County+10.4%5784802.2
Thurston County+10.2%1,7509125.8
Snohomish County+10.1%4,2772,2014.9
Clallam County+10.0%3363204.3
Adams County+9.6%47472.2
San Juan County+9.5%1561528.4
Whatcom County+9.5%1,4647676.2
Asotin County+9.3%34301.5
King County+9.2%18,4604,4427.9
Skamania County+9.2%63615.0
Douglas County+8.9%2172064.7
Chelan County+8.8%5904207.2
Jefferson County+8.8%1431434.2
Pend Oreille County+8.7%48483.3
Benton County+8.6%1,2859425.8
Island County+8.2%3913754.6
Whitman County+8.2%2641265.4
Clark County+8.0%3,5982,7936.8
Grant County+8.0%4513834.3
Klickitat County+7.6%1271195.2
Stevens County+7.2%2002004.0
Walla Walla County+6.7%2212213.5
Columbia County+6.2%441.0
Wahkiakum County+4.7%11112.3
Lincoln County+4.2%58584.8
Ferry County+3.6%110.1
Okanogan County+3.3%1531493.4
Garfield County+1.2%220.8

Permits by year, 1995–2025

Housing units authorised in Washington by year020,00040,00060,0001995: 38,160 units (26,772 single-family, 11,388 in multi-unit buildings)19951996: 39,597 units (27,015 single-family, 12,582 in multi-unit buildings)1997: 41,089 units (27,776 single-family, 13,313 in multi-unit buildings)1998: 45,727 units (28,644 single-family, 17,083 in multi-unit buildings)1999: 42,752 units (28,111 single-family, 14,641 in multi-unit buildings)2000: 39,021 units (25,471 single-family, 13,550 in multi-unit buildings)20002001: 38,345 units (26,736 single-family, 11,609 in multi-unit buildings)2002: 40,200 units (30,239 single-family, 9,961 in multi-unit buildings)2003: 42,825 units (33,091 single-family, 9,734 in multi-unit buildings)2004: 50,089 units (36,489 single-family, 13,600 in multi-unit buildings)2005: 52,988 units (41,407 single-family, 11,581 in multi-unit buildings)20052006: 50,033 units (35,611 single-family, 14,422 in multi-unit buildings)2007: 47,397 units (30,390 single-family, 17,007 in multi-unit buildings)2008: 28,919 units (17,440 single-family, 11,479 in multi-unit buildings)2009: 17,011 units (12,991 single-family, 4,020 in multi-unit buildings)2010: 20,691 units (14,702 single-family, 5,989 in multi-unit buildings)20102011: 20,864 units (13,159 single-family, 7,705 in multi-unit buildings)2012: 28,118 units (16,508 single-family, 11,610 in multi-unit buildings)2013: 32,962 units (18,396 single-family, 14,566 in multi-unit buildings)2014: 33,898 units (17,905 single-family, 15,993 in multi-unit buildings)2015: 40,374 units (19,797 single-family, 20,577 in multi-unit buildings)20152016: 44,077 units (22,463 single-family, 21,614 in multi-unit buildings)2017: 45,794 units (23,115 single-family, 22,679 in multi-unit buildings)2018: 47,746 units (23,676 single-family, 24,070 in multi-unit buildings)2019: 48,424 units (23,300 single-family, 25,124 in multi-unit buildings)2020: 43,881 units (23,542 single-family, 20,339 in multi-unit buildings)20202021: 56,941 units (25,076 single-family, 31,865 in multi-unit buildings)2022: 49,030 units (20,400 single-family, 28,630 in multi-unit buildings)2023: 37,097 units (18,056 single-family, 19,041 in multi-unit buildings)2024: 37,778 units (19,136 single-family, 18,642 in multi-unit buildings)2025: 34,913 units (17,780 single-family, 17,133 in multi-unit buildings)2025

Housing units authorised in Washington by yearsingle-family2+ unit buildings

Source: Federal Housing Finance Agency annual state and county house price indexes (updated March 31, 2026); Census Bureau Building Permits Survey annual state and county files. Public domain. Methodology.