Youtube Office, United States

The triple net lease is one in which the tenant is liable for a share of various expenses such as property taxes, insurance, maintenance, utilities, climate control, repairs, janitorial services and landscaping.
Grading
The Building Owners and Managers Association (BOMA) classifies office space into three categories: Class A, Class B, and Class C. According to BOMA, Class A office buildings have the "most prestigious buildings competing for premier office users with rents above average for the area." BOMA states that Class A facilities have "high quality standard finishes, state of the art systems, exceptional accessibility and a definite market presence." BOMA describes Class B office buildings as those that compete "for a wide range of users with rents in the average range for the area." BOMA states that Class B buildings have "adequate systems" and finishes that "are fair to good for the area," but that the buildings do not compete with Class A buildings for the same prices. According to BOMA Class C buildings are aimed towards "tenants requiring functional space at rents below the average for the area."