6. HVAC: an acronym for "heating-ventilation-air-conditioning" system. In a commercial building, the landlord generally is responsible for maintaining the HVAC.

7. Lease: an agreement by which the owner of a property (the "lessor") grants the right of possession to a tenant (the "lessee") for a specific period of time (the "term") for a predetermined amount of money (the "rent"). A "leasehold estate" is the space occupied by the tenant. Common types of leases include:

- A straight, or flat, lease, which stipulates that the same periodic payment (usually monthly) be made for the entire term of the lease.

- A percentage lease, which uses a percentage of the net or gross sales to determine the monthly rent. This is most often used in retail properties and with a minimum base rent.

- A net lease, which requires the tenant to pay maintenance, taxes, insurance and so on, along with a fixed rent. This is also called "net-net-net" or "triple net."

8. Lien: a legal claim filed against a property for payment of a debt or obligation. If a property owner fails to pay a creditor, for example, the creditor can place a lien on the property. A lien can halt the sale of a property.

9. Sale-leaseback: a transaction in which an owner sells a property to an investor, who then leases the property back to the original owner under prearranged terms. Sale-leaseback deals offer the original owner freed-up capital and tax breaks and the investor a guaranteed return and appreciation.

10. Sublease: a lease given by a tenant for some or all of a rented property. For example, if a tenant rents 20,000 square feet but only ends up needing 10,000 square feet, they may want to sublet the extra space for some or all of the remaining term of the lease, providing they continue to occupy and pay rent for the property.

To get a sense of the aspects of the property that you'll want to investigate before your sign any agreement, not the least among your considerations should be the person you work with to identify real estate opportunities and bring the deals together. Make sure that you find the right real estate professional to guide you through the process and help you find the kind of property you need.

(Collected from various sources)