Cap Rate, Cap Rate, Cap Rate... 8.67 !!!! Price Improvement. Outstanding Owner/User Opportunity freestanding 20,500 Commercial office building for sale. This is a great stable income Cash Flow building with High-Exposure, Freeway adjacent location situated near 60/215/91 fwy and 5 minutes from Downtown Riverside. Cell Tower income along with rental units with a 100% Occupancy rate, Yes, that is correct... 100% Occupancy!