Free Montana Pet Addendum Template

Last reviewed September 2026

Written by LawLease Editorial

Free template

Download a free Pet Addendum template

A blank, printable form — fill it in by hand. Or build a guided version with Montana set as the governing state. Create a free account to download.

Build a guided Montana version

Montana Pet Addendum

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

Montana rules at a glance

Montana rules for a Pet Addendum
Pets & unauthorized occupants	An unauthorized pet or unauthorized person allows a 3-day notice; if the tenant fixes the problem before the date in the notice, the agreement doesn’t terminate (§70-24-422(1)).
Security deposit limit	No statutory cap
Deposit return	10 days if nothing is deducted · 30 days with a written list of chargesMCA §70-25-202
Deposit burden	In any deposit dispute, the landlord must prove the damage the tenant caused (§70-25-204).

Security deposits in Montana

Montana places no dollar limit on a residential security deposit. It regulates instead what can be deducted and how fast the money must come back — and it uses two different deadlines depending on whether anything is withheld.

No deductions — 10 days — If there is no damage, no cleaning required, no unpaid rent and the utilities are paid, the full deposit is due within 10 days of the tenancy ending (§70-25-202(1)(b)).
With deductions — 30 days — Otherwise, within 30 days after the tenancy ends (or the unit is surrendered and accepted, if earlier), the landlord must give the tenant a written list of rent due and damage and cleaning charges, together with any balance (§70-25-202(1)(a)).
How it’s paid — The refund may go by electronic transfer, cash, check or other form of refund, or by mail to the address the tenant provides or the last known address (§70-25-202).
Allowed deductions — Damage caused by the tenant, unpaid rent, late charges, utilities, penalties due under the lease, other money owed, and actual cleaning costs including a reasonable charge for the landlord’s own labor. Normal cyclical maintenance can’t be charged unless the tenant’s negligence made it necessary (§70-25-201).
Cleaning notice — Cleaning charges can’t be deducted until the landlord gives written notice describing what cleaning is still needed; the tenant then has 24 hours to do it. The notice isn’t required if the tenant moves out without notice (§70-25-201(3)).
Pre-move-out inspection — Either party may ask for the unit to be inspected within one week before the tenancy ends (§70-25-201(2)).
Wrongful withholding — The landlord is liable for the amount wrongfully withheld, bears the burden of proving tenant-caused damage, and may face an attorney’s-fee award to the prevailing party (§70-25-204).

Ending a Montana tenancy

A periodic tenancy ends on the date named in the notice, not necessarily at the end of a rental period — rent is apportioned day by day unless the parties agree otherwise (§70-24-441(3)).

Notice to end a Montana periodic tenancy (MCA §70-24-441)
Week-to-week	7 days’ written notice
Month-to-month	30 days’ written notice, given at any time

Nonpayment — If rent is unpaid when due and the tenant doesn’t pay within 3 days after written notice of nonpayment, the landlord may terminate the rental agreement (§70-24-422(2)).
Pets & unauthorized occupants — An unauthorized pet or unauthorized person allows a 3-day notice; if the tenant fixes the problem before the date in the notice, the agreement doesn’t terminate (§70-24-422(1)).
Damage or safety threats — Destroying, damaging or removing part of the premises, or creating a reasonable risk of damage to the premises or injury to neighbors, allows termination on 3 days’ written notice (§70-24-422(3)–(4)).
Other breaches — Other noncompliance requires at least 14 days’ notice, and a remediable breach cured in time doesn’t end the tenancy; a repeat of the same breach within 6 months allows a 5-day notice (§70-24-422(1)).

Tenant protections you can’t waive

Void lease terms — A lease can’t waive rights under the Act, authorize a confession of judgment, excuse or limit liability for purposeful misconduct or negligence, or require indemnity for it (§70-24-202).
No retaliation — A landlord can’t raise rent, cut services or seek possession because the tenant complained to a code agency, complained in writing about habitability, or joined a tenants’ union; a complaint within 6 months creates a presumption of retaliation (§70-24-431).
No lockouts or shutoffs — Unlawfully removing a tenant or cutting heat, water, electricity, gas or other essential services lets the tenant recover possession or terminate, plus up to 3 months’ rent or treble damages, whichever is greater (§70-24-411).
Deposit burden — In any deposit dispute, the landlord must prove the damage the tenant caused (§70-25-204).

Montana Pet Addendum FAQs

How much can a landlord charge for a security deposit in Montana?

Montana sets no maximum — the amount is whatever the lease specifies. The law instead limits what can be deducted and sets strict refund deadlines (§§70-25-201, 70-25-202).

How long does a landlord have to return a security deposit in Montana?

Ten days if there’s no damage, no cleaning needed, no unpaid rent and the utilities are paid. If the landlord deducts anything, the written list of charges and any balance are due within 30 days after the tenancy ends (§70-25-202).

Can a Montana landlord deduct cleaning costs from the deposit?

Yes, including a reasonable charge for the landlord’s own labor — but only after giving the tenant written notice of the cleaning still needed and 24 hours to do it, unless the tenant moved out without notice (§70-25-201).

Pet Addendum in other states

Create your document in under 5 minutes

Answer a few plain questions, then download or e-sign. Built for landlords and tenants.

Get started