In most US states, landlords are legally required to maintain rental properties in a habitable condition under the implied warranty of habitability. This means the property must have adequate heating, plumbing, hot water, electricity, structural safety, and freedom from infestations. If a landlord fails to make necessary repairs after written notice, tenants in many states can withhold rent, repair and deduct costs from rent, or terminate the lease without penalty.

Security deposit rules vary significantly by state, but most states require landlords to: hold deposits in a separate account, provide an itemized list of deductions within a specified timeframe (typically 14-30 days after move-out), and return the remaining deposit within that same timeframe. Improper withholding of a security deposit can result in double or triple damages in many states, plus attorney fees.

The federal Fair Housing Act prohibits discrimination in the sale, rental, and financing of housing based on race, color, national origin, religion, sex, familial status, and disability. Many states and localities add additional protected classes such as sexual orientation, gender identity, source of income, and age. If you believe a landlord has discriminated against you, you can file a complaint with the Department of Housing and Urban Development (HUD) or your state fair housing agency.

Generally, breaking a lease early exposes you to liability for remaining rent. However, most states allow early termination without penalty in certain circumstances: active military deployment (under the Servicemembers Civil Relief Act), domestic violence (many states have specific protections), significant habitability failures by the landlord, or if the landlord has violated the lease. Check your state's specific laws before breaking a lease.