The kind of tenancy is the first thing to identify, because it decides how the arrangement ends. A fixed-term tenancy runs for a stated period and expires on its own date, so neither side normally has to give notice to end it at the end. A periodic tenancy, the month-to-month arrangement most people meet, has no end date and instead renews period by period until one side gives the required notice. That notice is frequently not the same length for both sides. California, to take one state's rule, requires a residential landlord ending a month-to-month tenancy to give at least 60 days' written notice, or 30 days where the tenant has lived there less than a year, while the tenant's notice need only run as long as the rental period, which is 30 days when rent is monthly. A tenancy at will has neither a fixed term nor a fixed period and is terminable by either side, though most states impose a statutory notice period before possession can be recovered. A tenancy at sufferance is not really an agreement at all: it describes a tenant who stays after the right to possession has ended.
Holdover is where a tenant can create a new tenancy without intending to, and so can a landlord. Staying past the end of a fixed term without a new agreement leaves the tenant in possession with no term. What happens next frequently turns on whether the landlord accepts money. California's rule is explicit and is a useful model of the mechanism: if the tenant remains in possession after the hiring expires and the landlord accepts rent, the parties are presumed to have renewed on the same terms and for the same time, "not exceeding one month when the rent is payable monthly, nor in any case one year." A landlord who wants the tenant out and takes a check may have just agreed to another month. Many leases now address the situation directly with a holdover clause charging a multiple of the ordinary rent, which is a contract term rather than a legal rule, so its enforceability is a state-law question.
Assignment and sublease are different transfers and they are routinely confused. An assignment passes the tenant's entire remaining interest to someone else, who steps into the tenancy. A sublease passes less than the whole: the original tenant becomes a landlord to the subtenant and stays in the chain, so a subtenant ordinarily has no direct relationship with the building's owner at all. In both cases the original tenant generally remains liable to the landlord for everything the lease requires unless the landlord releases them in writing, which is the point most people miss when a replacement roommate is found. Residential leases commonly require the landlord's written consent to either, and what a landlord may do with a consent request is a matter of the lease and state law.
One disclosure is federally required in a residential lease. Under 42 USC 4852d, before a purchaser or lessee is obligated under a contract to buy or lease "target housing," the seller or lessor must provide the EPA's lead hazard information pamphlet and must disclose any known lead-based paint and any known lead-based paint hazards, along with any lead hazard evaluation report the seller or lessor has. Target housing means housing built before 1978, other than housing for the elderly or persons with disabilities and zero-bedroom dwellings, unless a child under six lives there or is expected to. Read the third requirement carefully, because it is easy to over-report: the statute's 10-day period to conduct a risk assessment or inspection is written for the purchaser, not the lessee. The pamphlet and the disclosure reach a renter; the 10-day inspection window does not. A person who knowingly violates the section is liable to the purchaser or lessee for three times the damages suffered, on top of civil money penalties.
Everything else in a residential lease is contract, subject to state law. Notice periods, late fees, entry rights, pet and guest terms, renewal mechanics and what happens on early termination are terms, not entitlements, and a term that conflicts with a state's landlord-tenant statute is generally unenforceable rather than binding. That is why reading the lease and reading the state's statute are two different tasks, and both are worth doing before signing rather than after a dispute.