HRS §490:2A-208
Changing or ending a lease agreement without new payment
You can change or end a lease agreement without paying extra, unless the agreement says changes must be in writing and signed. If a merchant's form requires a separate signature for changes, that rule only applies if you sign it separately. A failed change attempt can still act as a waiver, but you can take back a waiver if you give reasonable notice, unless it would be unfair.
landlordstenants
The statute, as written — Modification, rescission and waiver
(a) An agreement modifying a lease contract needs no consideration to be binding. (b) A signed lease agreement that excludes modification or rescission except by a signed record may not be otherwise modified or rescinded, but, except as between merchants, such a requirement on a form supplied by a merchant must be separately signed by the other party. (c) Although an attempt at modification or rescission does not satisfy the requirements of subsection (b), it may operate as a waiver. (d) A party who has made a waiver affecting an executory portion of a lease contract may retract the waiver by reasonable notification received by the other party that strict performance will be required of any term waived, unless the retraction would be unjust in view of a material change of position in reliance on the waiver.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.