What's difference between class a and class b real estate?

Question

What's difference between class a and class b real estate?

Answer 1

Class A+: Landmark quality, highrise building with prime central business district locatation (the best of the Class A buildings). Class A: Generally 100,000 sf or larger (five or more floors), concrete and steel construction, built since 1980, business/support amenities, strong identifiable location/access. Class B: Renovated and in good locations. Newer building are smaller in size, wood frame construction, and/or in non-prime location. Class C: Older, unrenovated of any size in average to fair condition.