Enrichedrealestate.com has two free options to value commercial real estate, with 5 more options coming soon.

Commercial Comparable Sales Comps – free, really find relevant commercial comparable sale comps in record, Details are available for each sale.

Commercial appraisal sales comparison approach free tool lets you select comp sales and then make appropriate adjustments to determine market value for your property. Commercial appraisals are available starting at $500.You receive a quality appraisal, often in 1 week or less