YIMBY:

The YIMBY movement (short for “yes in my back yard”) is a pro-Infrastructure development movement mostly focusing on public housing policy, real estate development, public transportation, and pedestrian safety in transportation planning, in contrast and in opposition to the NIMBY (“not in my back yard”) movement that generally opposes most forms of urban development in order to maintain the status quo.[1][2][3] The YIMBY position supports increasing the supply of housing within cities where housing costs have escalated to unaffordable levels.[4] They have also supported infrastructure development project like improving housing development[5] (especially for affordable housing[6] or trailer parks[7]), high-speed rail lines,[8][3]homeless shelters,[9] day cares,[10] schools, universities and colleges,[11][12] bike lanes, and transportation planning that promotes pedestrian safety infrastructure.[2]

YIMBYs often seek rezoning that would allow denser housing to be produced or the repurposing of obsolete buildings, such as shopping malls, into housing.[13][14][15] Some YIMBYs have also supported public-interest projects like clean energy or alternative transport.[16][17][18][19]

The YIMBY movement has supporters across the political spectrum, including left-leaning adherents who believe housing production is a social justice issue, free-market libertarian proponents who think the supply of housing should not be regulated by the government, and environmentalists who believe land use reform will slow down exurban development into natural areas.[20] YIMBYs argue cities can be made increasingly affordable and accessible by building more infill housing,[21][22][23]: 1  and that greenhouse gas emissions will be reduced by denser cities.[24]

Land value tax:

A land value tax (LVT) is a levy on the value of land without regard to buildings, personal property and other improvements upon it.[1] It is also known as a location value tax, a point valuation tax, a site valuation tax, split rate tax, or a site-value rating.

Some economists favor LVT, arguing they do not cause economic inefficiency, and help reduce economic inequality.[2] A land value tax is a progressive tax, in that the tax burden falls on land owners, because land ownership is correlated with wealth and income.[3][4] The land value tax has been referred to as “the perfect tax” and the economic efficiency of a land value tax has been accepted since the eighteenth century.[1][5][6] Economists since Adam Smith and David Ricardo have advocated this tax because it does not hurt economic activity, and encourages development without subsidies.

LVT is arguably an ecotax because it discourages the waste of prime locations, which are a finite resource.[21][22][23] Many urban planners claim that LVT is an effective method to promote transit-oriented development.[24][25]