Washington Housing Authorities 1101 30th St NW The National Housing Trust is the nation?s leading expert in ?preserving and improving? affordable housing ? ensuring that privately owned rental housing remains in our affordable housing stock and is sustainable over time. Washington DC Housing Authorities National Housing Trust www.nhtinc.org sustainable affordable housing green preservation affordable housing preservation National Housing Trust preservation of affordable housing federally subsidized affordable housing sustainable communities NHT sustainable affordable housing green preservation affordable housing preservation National Housing Trust preservation of affordable housing federally subsidized affordable housing sustainable communities NHT Business Reviews National Housing Trust Testimonials