Free Oklahoma Lease Extension Addendum Template

Last reviewed September 2026

Written by LawLease Editorial

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Oklahoma Lease Extension Addendum

This Lease Extension Addendum is built with Oklahoma as the governing state. These are the Oklahoma landlord-tenant rules that most often bear on it, with the statute for each.

Oklahoma rules at a glance

Oklahoma rules for a Lease Extension Addendum
Month-to-month termination	30 days’ written notice (7 days if shorter than month-to-month)41 O.S. §111
Rent-increase notice	No specific statute; a month-to-month change needs the 30-day termination notice41 O.S. §111(A)
Rent increases	No statute sets a rent-increase notice period. Rent can’t be raised mid-term on a fixed-term lease unless the lease allows it; for a month-to-month tenancy, a change of terms should be given with at least the 30 days’ written notice needed to end the tenancy (§111(A)).
Rent control	Oklahoma has no rent-control law, so the market sets the rent.

Rent, late fees & rent increases

Rent is payable at the time and place the parties agree. If the lease is silent, it’s payable at the dwelling unit at the start of each term of a month or less, and monthly in advance on longer terms (41 O.S. §109).

Late fees — Oklahoma has no late-fee statute. In Sun Ridge Investors, Ltd. v. Parker, 1998 OK 22, the Oklahoma Supreme Court treated a late charge as liquidated damages and struck a $5-per-day charge stacked on a $20 late fee as an unenforceable penalty. A late fee should be a reasonable estimate of the landlord’s actual cost of late payment and must be written into the lease.
Rent increases — No statute sets a rent-increase notice period. Rent can’t be raised mid-term on a fixed-term lease unless the lease allows it; for a month-to-month tenancy, a change of terms should be given with at least the 30 days’ written notice needed to end the tenancy (§111(A)).
Rent control — Oklahoma has no rent-control law, so the market sets the rent.
Occupancy limits — A lease may set reasonable limits on use and occupancy; two persons per bedroom is presumed reasonable, not counting children born to the tenants during the lease (§117(B)–(C)).

Oklahoma Lease Extension Addendum FAQs

How much notice is required to end a month-to-month lease in Oklahoma?

Thirty days’ written notice from either side, running from the date the notice is served. Tenancies shorter than month-to-month, such as week-to-week, need 7 days (41 O.S. §111).

Lease Extension Addendum in other states

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