Model homes: Sixteen years on it's time to learn lessons from post-Katrina housing initiatives

There are about 67,000 homeless veterans in the United States today, and at least a third are chronically homeless. The 100,000 Homes Campaign, which aims to get 100,000 chronically homeless or otherwise particularly vulnerable people into housing, supercharged the housing process this summer using Rapid Results — a strategy that helps communities jump-start projects by breaking off a 100-day chunk, setting wildly ambitious goals and using any (legal) means necessary to achieve them.

Philadelphia reduced chronic homelessness by coordinating outreach through a centralized office and providing immediate access to housing and services such as counseling and drug rehabilitation. San Francisco is studying the model.

In a county in California, federal agencies are implementing a model known as Housing First which gets homeless people safe, secure housing before tackling root causes of homelessness.

By partnering with cities across America, the 100,000 Homes campaign is going directly to the streets to end homelessness - and it’s working. With roughly 700,000 people in the United States experiencing homelessness, this organization seeks to address that using a tiered system that considers individual health needs as well.

At least 25 percent of female veterans were sexually abused in childhood, making it more difficult to reenter civilian life. Volunteers of America runs a holistic housing program for homeless veterans in the U.S.

Female veterans are more likely to have a history of trauma, be unemployed, and be homeless. To address this disparity, the VA has started awarding grants to organizations that help female vets.

New Orleans implemented an extraordinary 10-year plan that engaged unprecedented cross-sector collaboration between government, non-profit, and private entities to provide housing and housing services to the city's homeless veterans. The city's success in providing homes for every single veteran formerly on their streets motivated cities across the nation to tackle the crises using similar means, leading to a 1/3 decline veteran homelessness since 2010.

San Francisco's Care Not Cash program began in 2004 in response to the city's homelessness crisis. One facet of the program is an outreach team, whose members regularly visit homeless people on the street to connect them to resources such as housing and drug rehabilitation.

In San Francisco, 23 percent of homeless people return to the street after transitional housing programs. A New York program gives the mentally ill and homeless individual apartments alongside average New Yorkers and has had an 84 percent retention rate.

To combat rampant homelessness, cities like New York are investing in supportive housing and comprehensive, consistent services for the homeless population. Although San Francisco has smaller-scale supportive housing programs. political will and regular funding are necessary to grow those initiatives and make a large impact on homelessness in the city.