Pricing a commercial condo

[Ann Marie Giglio]

Hi all, how do I price a commercial office condo located in an exclusive historic district? The comps for other areas are much lower and don't reflect the prices of the neighborhood commercial properties. 

The condo is in a mixed use building with commercial ground floor, townhouses above.  It's the only mixed use building on the street.

The townhouses are sellable at around $420/sq ft. Does that apply to the ground floor commercial? 

Thanks in advance for taking the time to reply!