How much would it cost to end homelessness in Los Angeles

Some people on social media questioned why the worlds richest people arent sharing some of their wealth to help solve pressing global problems.One Facebook post singled out climate

How much would it cost to end homelessness in Los Angeles

Some people on social media questioned why the worlds richest people arent sharing some of their wealth to help solve pressing global problems.

One Facebook post singled out climate change and homelessness, saying billionaires such as former New York Mayor Michael Bloomberg could do more to end both.

"It would cost $20 billion to end homelessness in the U.S. Mike Bloomberg could do that tomorrow and still have $28 billion to his name," the post said. "Halting global warming would cost $300 billion. The worlds 10 richest people could each throw in $30 billion and still have $386 billion themselves."

The post was flagged as part of Facebooks efforts to combat false news and misinformation on its News Feed. (Read more about our partnership with Facebook.)

For this fact-check, we wanted to look into the posts claims about the cost of ending homelessness and halting global warming.

Theres no single number experts agree on that can capture the cost of ending homelessness or climate change. Both issues are complex. But our reporting found that the $20 billion to end homelessness and $300 billion to halt global warming would be far from sufficient.Homelessness

The $20 billion figure to end homelessness has circulated for years. That number traces back to reporting about an outdated estimate from the U.S. Department of Housing and Urban Development in 2012. It was a rough estimate of the annual cost.

The number has to do with housing choice vouchers, which are the primary component of federal spending on housing assistance. They are seen by advocates as one of the primary ways the government can address the homelessness crisis.

Under the housing choice voucher program, renters contribute 30% of their monthly income in rent and the federal government pays the rest, said Jason Ward, an economist and associate director for the RAND Center for Housing and Homelessness in Los Angeles.

Not everyone who is eligible for housing assistance receives it. Ward estimated that around 7.4 million eligible households are not receiving this aid.

Expanding the voucher program to cover all those who are eligible would cost well over $20 billion.

The average subsidy per voucher holder is around $8,000 a year. Multiply that by 7.4 million, and it would cost at least $59 billion per year to fully fund the voucher program.

The government would still need to substantially increase the supply of affordable housing so that the use of vouchers would not reduce the housing supply and raise rents.

Current estimates of the costs of building affordable housing in major metropolitan areas range from around $150,000 per unit in Atlanta to a high of $550,000 per unit in Southern California. Constructing more than 3.5 million new units  Wards estimate for the affordable housing units needed to fill the voucher shortfall could cost $1.3 trillion, Ward said.

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By Monique Curet  July 29, 2022

"These estimates still also ignore the costs of providing the significant service needs of many individuals currently experiencing chronic homelessness, which include intensive mental health services and health care treatment/management for a variety of chronic health conditions, as well as substance abuse treatment for the large portion of the chronically homeless population struggling with addiction," Ward said.Climate change

The claim that $300 billion can halt global warming appears to be rooted in a 2019 Bloomberg column. The piece says that $300 billion is enough to lock millions of tons of carbon emissions back into the soil.

That articles authors cite René Castro Salazar, an assistant director general at the United Nations Food and Agriculture Organization. Salazar told Bloomberg that almost 5 billion acres of degraded land could be restored to pasture, in effect reversing desertification trends and converting enough carbon into biomass to stabilize carbon emissions for 15 to 20 years  giving the world a chance to adopt longer-term sustainable technologies.

Capturing carbon by restoring lands that have been degraded by misuse, deforestation or overgrazing is one of the strategies scientists have identified to mitigate environmental distress and disaster.

The Bloomberg column focused on this one strategy. A 2019 Slate column pointed out that while a hypothetical soil restoration strategy might be technically sound, addressing climate change comes with major political roadblocks, making actual costs much higher.

Experts themselves disagree on how much it would cost the world to halt the catastrophic consequences of global warming  but $300 billion falls well short of most estimates.

  • Yvo de Boer, the former executive secretary of the United Nations Framework Convention on Climate Change, estimated that reducing greenhouse gas emissions and adapting to climate change would require $300 billion a year from 2020 onward.
  • A major report from the U.N.s Intergovernmental Panel on Climate Change said that limiting global warming to 1.5 degrees Celsius would require an annual average investment of around $2.4 trillion from 2016 to 2035, or around $48 trillion.
  • In a 2020 review, climate research group Project Drawdown estimated that deploying the technologies and changes necessary to meet the climate targets set by the Paris Agreement would cost the world about $25 trillion.
  • A paper published in the scientific journal Nature posited a model to estimate the cumulative costs of achieving climate policy targets. Estimates ranged from $10 trillion to $100 trillion, with median estimates falling between $15 trillion and $30 trillion.
  • A report by the Paris-based International Energy Agency in 2020 suggested that reaching global net zero emissions by 2050 would cost $5 trillion in clean energy investments.

The wide range of cost estimates puzzles lawmakers and researchers, said a group of MIT scientists working on the issue. For one thing, its hard to accurately gauge the price of various technologies that have not yet been fully developed. Models for estimating cost often do not account for possible public resistance, limited resources and lack of international cooperation.Our ruling

A Facebook post claimed that it would cost $20 billion to end homelessness in the U.S. and $300 billion to halt global warming.

These issues are complex, and there are no firm estimates of the cost of addressing them. That said, expert analysis suggests that $20 billion falls short of the actual cost to end homelessness in the U.S. Similarly, while cost models for meeting climate change targets differ widely, $300 billion is much lower  sometimes by a hundredfold than other estimates posited by experts.

We rate this claim Mostly False.

Facebook post, July 29

Email interview, Jason Ward, associate director for the RAND Center for Housing and Homelessness in Los Angeles

Verify This, "No, $20 billion is not enough money to eradicate homelessness in the US," May 27, 2021

MIT Technology Review, "Sucking Up CO2 Will Cost Hundreds of Trillions," July 19, 2017

Nature, "The costs of achieving climate targets and the sources of uncertainty," March 23, 2020

Yale Climate Connections, "Fighting climate change: Cheaper than business as usual and better for the economy," November 30, 2020

Bloomberg, "How to Halt Global Warming for $300 Billion," October 23, 2019

MIT Joint Program on the Science and Policy of Climate Change, "Costs of Climate Mitigation Policies," March 2016

Grantham Research Institute on Climate Change and the Environment, "How much will it cost to cut global greenhouse gas emissions?,"May 8, 2016

Slate, "Spending $300 Billion Is Not Going to Solve Climate Change," October 24, 2019

Forest Industries EU, "Fighting climate change might cost 300 billion USD a year from 2020"

International Energy Agency, Energy Technology Perspectives

Project Drawdown,The 2020 Drawdown Review

IPCC, 2018 Special Report: Global Warming of 1.5 ºC

New York Times, Americas Cities Could House Everyone if They Chose To, May 15, 2020

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