List of Housing Bylaws Passed

California

2017
Los Angeles, California
Source: https://www.latimes.com/local/lanow/la-me-ln-mansionization-los-angeles-20170301-story.html

Hawaii

2019
Honolulu, Hawaii
Source: https://www.staradvertiser.com/2019/05/01/breaking-news/mayor-kirk-caldwell-allows-bill-regulating-monster-homes-to-become-law/

Kansas

2018
Prairie Village, Kansas
Source: https://www.kcur.org/post/prairie-village-city-council-approves-home-building-guidelines#stream/0

Massachusetts

2013
Chilmark, Massachusetts
Source: https://vineyardgazette.com/news/2013/04/24/chilmark-overwhelmingly-passes-bylaw-limit-home-size

2018
Truro, Massachusetts
Source: http://provincetown.wickedlocal.com/news/20181129/truro-limits-giant-houses---just-in-time

New York

2015
East Hampton, New York
Source: https://www.easthamptonstar.com/Government/2015623/East-Hampton-Village-House-Size-Limits-Adopted

Washington

2017
Mercer Island, Washington
Source: https://www.seattletimes.com/business/real-estate/mercer-island-land-of-the-luxury-home-cracks-down-on-building-mansions/

British Columbia, Canada

2018
Richmond, British Columbia
Source: https://www.richmond-news.com/real-estate/richmond-council-votes-to-cut-alr-home-sizes-even-further-1.23498256

List of Housing Bylaws Proposed

California

San Carlos, California

Source: https://www.smdailyjournal.com/news/local/debate-surrounding-home-size-rules-wearing-on-in-san-carlos/article_d15f843a-cc45-11e8-a049-6fb52e29662e.html

Colorado

San Juan County, Colorado

Source: http://www.silvertonstandard.com/news.php?id=426

Delaware

Rehoboth Beach, Delaware

Source: https://www.delawareonline.com/story/news/local/2015/07/17/rehoboth-cinches-large-homes-tightened-zoning-law/30331865/

Massachusetts 

Sharon, Massachusetts

Source: https://www.bostonglobe.com/metro/regionals/south/2012/02/23/houses-get-bigger-sharon-may-follow-wellesley-and-cohasset-and-regulate-large-dwellings/NAM7ygwR9PfVGuv5ba543M/story.html

Minnesota

Minneapolis, Minnesota
Source: http://www.startribune.com/rules-would-limit-the-size-of-new-homes-across-minneapolis/269051791/

Missouri

Kirkwood, Missouri
Source: https://www.ksdk.com/article/news/investigations/kirkwood-takes-on-mcmansion-problem/63-579156103

New York

Southampton, New York
Source: https://www.newsday.com/long-island/suffolk/southampton-large-houses-zoning-code-1.16922352

North Carolina

Southern Shores, North Carolina
Source: http://outerbanksvoice.com/2015/12/01/southern-shores-will-look-at-changes-to-address-mega-houses/

Oregon

Portland, Oregon
Source: https://www.koin.com/news/plan-aims-to-block-new-mcmansions-in-portland_20180116022009679/918008672

Wallowa County, Oregon
Source: https://www.wallowa.com/news/battle-brewing-over-ridge-top-trophy-homes/article_b03035f3-88fc-5384-86b1-d456bed97721.html