As a homeowner you must to know how important it is to get real information about the home improvement company you hire for to remodel your house. The new windows must add beauty, value, and efficiency to your home. By choosing a wrong contractor you may get in trouble. Bestoff Windows, with over a decade of customer satisfaction, is fully licensed, bonded, and insured. It is no joke when we say we can proudly present you 10 references within a 10 miles radius of your home address (Alameda and Contra Costa only).