FSI Appraisal Company, Inc. Share: Real Estate Appraisal Visit Website Request Info P.O. Box 1267 100 King Street Northampton, MA 01061 (413) 586-5252 (413) 584-0490 (fax) About Us Real estate appraisal and consultation services for all types of real estate. About Highlights Media About Real estate appraisal and consultation services for all types of real estate. Highlights PurchaseRefinanceEstate planningCommercial retail propertiesIndustrial buildings, warehouses, medical buildings, and office buildings Media