A complete practitioner's treatment of the two federal accessibility and antidiscrimination regimes that govern housing and public-facing businesses. Part I maps the statutory landscape and the differences between the Fair Housing Act, the ADA titles, Section 504, and state law. Parts II through V work the Fair Housing Act: coverage and exemptions, the seven protected classes and the conduct each provision prohibits, the three distinct disability obligations of reasonable modification and reasonable accommodation and design and construction, the discriminatory effects framework after Inclusive Communities, and the enforcement paths through HUD, the Department of Justice, and private suit with their very different remedies and deadlines. Parts VI through IX work the ADA: Title III coverage and its twelve enumerated categories, the four substantive obligations including readily achievable barrier removal for existing facilities and the far stricter new construction and alteration standards, the website accessibility question and the circuit split over whether a nexus to a physical place is required, and Title II obligations for public entities including the 2024 web accessibility rule. Parts X through XIV cover Section 504 and Section 508, enforcement and remedies including the fee-shifting structure that drives the litigation, the available defenses, the design of a compliance program, and the verification list.