Within the Housing and Urban Development Act of 1965, Congress authorized the Rent Supplement Program, which provided rental subsidies to low-income tenants living in privately-owned housing. The program was created to provide affordability to low-income households in federal Section 221(d)(3) projects. Under the program, eligible tenants paid 25 percent of their income toward the rent. The difference between the tenant payment and the market rent was made up by a Rent Supplement payment provided directly to the project owner. The program was ultimately replaced by the Section 8 New Construction and Substantial Rehabilitation (Section 8 NC/SR) program; however, a number of units under the original program still receive Rent Supplement payments under existing contracts. Tenants in buildings currently receiving Rent Supplement payments pay 30 percent of their household income towards rent.
Katika Sheria ya Nyumba na Maendeleo ya Miji ya 1965, Bunge liliidhinisha Programu ya Kuongeza Nyumba, ambayo ilitoa ruzuku ya kukodisha kwa wapangaji wa mapato ya chini wanaoishi katika nyumba za kibinafsi. Programu hiyo iliundwa ili kutoa uwezo wa gharama nafuu kwa kaya zenye mapato ya chini katika miradi ya shirikisho ya Sehemu ya 221 (d) (3) ya Sheria ya Marekani. Kwa mujibu wa mpango huo, wapangaji waliostahili walipa asilimia 25 ya mapato yao kwa ajili ya kodi. Tofauti kati ya malipo ya mpangaji na kodi ya soko ilifanywa na malipo ya Rent Supplement iliyotolewa moja kwa moja kwa mmiliki wa mradi. Programu hiyo ilibadilishwa na Sehemu ya 8 ya Ujenzi Mpya na Urekebishaji wa Kubwa (Sehemu ya 8 NCRS), lakini idadi ya vitengo chini ya mpango wa awali bado hupokea malipo ya ziada ya kodi chini ya mikataba iliyopo. Wenyeji wa nyumba ambao wanapata malipo ya ziada ya kodi ya nyumba, wanalipa asilimia 30 ya mapato yao ya kaya kwa ajili ya kodi.