Day count not published
A statutory number of days is not printed on this page for Montana, because it has not been checked against the current statute for this site. Publishing a remembered number would be worse than publishing none.
Open your purchase agreement and read the cancellation paragraph, usually in bold above the signature. That clause is the contractual window. If it is longer than the statute that applies, the longer window is the one you can use. If you signed recently, send written notice the way the contract says, today, and keep proof.
What to do if the purchase is recent
- Find the cancellation address in the contract. Do not use the sales desk’s verbal instructions as a substitute.
- Send a short writing that says you cancel, names the contract, and is signed. Keep a copy.
- Use the delivery method the contract, or the statute, treats as effective. Certified mail is often safer than a regular email even when email is allowed.
- Do not sign a waiver of your cancellation right while the window might still be open.
- Do not stop there if a closing already happened. Some statutes treat an early closing as voidable for much longer, and that question belongs with a lawyer.
If you have owned it for years
This statute will not unwind an old purchase. The later path is the contract you have now: maintenance, any loan, the term, and whether the developer offers a real release. That review is the contract-cancellation service, not this page.