A business that leases real estate and improvements (buildings, etc.) in the form of space for offices, a warehouse, a restaurant, a nail or hair salon, a clothing store, a coffee shop, or other commercial (nonresidential) space will usually be required to sign a written contract known as a commercial lease agreement.

The tenant (the business occupying the space) who signs a commercial lease agreement is generally expected to be a more savvy, sophisticated, and informed tenant (also known as a lessee) than a tenant in a residential lease, and the law usually does not provide a commercial tenant with the same protections as residential tenant receives.

Because the law does not provide a commercial tenant with as many protections, it is up to the commercial tenant to read, understand, and negotiate protections in a proposed lease agreement before signing it, as most every paragraph in a commercial lease agreement can have a significant impact on a business’s operations and financial stability.

The law governing commercial leases varies from state to state but generally consists of a state's contract law (as applied to the lease agreement)—and in some states, includes the statutes enacted by the state's legislature that specifically apply to commercial tenancies, or that generally apply to both residential and commercial tenancies.

In Montana (MT), a commercial lease agreement is a legally binding contract between a landlord and a business tenant for the rental of nonresidential property, such as office space, warehouses, or retail locations. Unlike residential tenants, commercial tenants are considered more knowledgeable and are expected to understand and negotiate the terms of their leases. Montana law does not provide the same level of statutory protection to commercial tenants as it does to residential tenants, which means that the terms of the lease are largely determined by the agreement between the parties. Commercial tenants in Montana should carefully review and negotiate lease terms, as these can significantly affect their business operations and financial health. The regulation of commercial leases in Montana is primarily governed by state contract law, and while there may be some statutes that apply specifically to commercial tenancies or to both residential and commercial tenancies, the specifics of each lease can vary greatly. It is advisable for commercial tenants to consult with an attorney to ensure that their interests are adequately protected before signing a commercial lease agreement.