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Free Missouri Lease
Extension Addendum Template

The agreement is signed by the same parties as the lease it attaches to.

Last reviewed September 2026

Written by LawLease Editorial

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Missouri Lease Extension Addendum

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

Missouri rules at a glance

Missouri rules for a Lease Extension Addendum
Month-to-month terminationWritten notice ending on a rent-paying date at least one month after receiptRSMo §441.060.4
Rent-increase noticeNo specific statute; a month-to-month change needs the one-month termination noticeRSMo §441.060
Rent controlProhibited statewideRSMo §441.043
Rent increasesNo Missouri statute sets a rent-increase notice period. Rent is fixed for a fixed-term lease; for a month-to-month tenancy, an increase is a change of terms, so the one-month termination notice under §441.060 is the practical minimum.

Rent, late fees & rent increases

Missouri has no statute capping residential late fees and no mandatory grace period. A late fee is enforceable because it is written into the lease, and — as with any contract charge — a fee far out of proportion to the landlord’s real loss risks being treated as an unenforceable penalty. There is no fixed legal number.

  • Rent increases — No Missouri statute sets a rent-increase notice period. Rent is fixed for a fixed-term lease; for a month-to-month tenancy, an increase is a change of terms, so the one-month termination notice under §441.060 is the practical minimum.
  • Rent control — No county or city may enact, maintain or enforce any ordinance that regulates the amount of rent for privately owned residential property (§441.043).
  • 2025 preemption expansion — Effective August 28, 2025 (HB 595 & 343), cities and counties also may not require landlords to accept housing-assistance income, restrict landlords’ own screening criteria (income, credit, eviction or criminal history), cap security deposits, or impose right-of-first-refusal mandates. Local rules protecting recipients of veterans’ benefits remain allowed (§441.043).
  • Occupancy — A limit of two persons per bedroom is presumed reasonable in Missouri; it doesn’t apply to children born to the tenants during the lease (§441.060.2).

Missouri Lease Extension Addendum FAQs

How do you end a month-to-month lease in Missouri?

Either party gives written notice stating that the tenancy ends on a periodic rent-paying date at least one month after the notice is received (§441.060.4). If rent is due on the 1st and notice is received on the 15th, the earliest end date is the 1st of the month after next.

More Missouri landlord documents

Lease Extension Addendum in other states

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