California treats consent differently by property type. For commercial leases, Civil Code §1995.260 provides that where a lease requires consent but states no standard, consent may not be unreasonably withheld, the rule Kendall announced. Residential leases fall outside that chapter, so the lease language governs, and most California leases bar assignment without written approval. Deposits are the other flashpoint: Civil Code §1950.5 ties the accounting duty to whoever paid, so an assignment silent on the point leaves the assignor waiting on a refund that goes to somebody else.
Texas codifies the consent requirement. Property Code §91.005 provides that during the term of a lease a tenant may not rent the leasehold to another person without the landlord's prior consent, and Texas courts read that clause as written rather than importing a reasonableness gloss. Deposit timing is the practical issue: §92.103 gives the landlord 30 days to refund after the tenant surrenders and gives a forwarding address, and an assignor who never surrenders never starts that clock. Settle the deposit inside the assignment or you will chase it for months.
Florida removed the two-witness formality for leases from §689.01, so a signed writing suffices for an assignment of a term longer than a year. Residential deposits run on Fla. Stat. §83.49: a landlord claiming against a deposit must give written notice within 30 days of the tenant vacating, and the tenant has 15 days to object. Commercial tenants get the Fernandez standard where the lease requires consent without setting a test.
New York has the most explicit residential rule in the country, and it surprises people. Under Real Property Law §226-b(1), a residential tenant may not assign without the owner's written consent, and that consent may be unconditionally withheld without cause. The counterweight is that where the owner unreasonably withholds it, the tenant may demand release on 30 days notice, and that release is the sole remedy. Subletting is far more generous under §226-b(2), which is why New York tenants who want out often sublet instead. Related forms sit on the US real estate templates hub.