Terry Derosier opened Window World Twin Cities in 2002 with the goal of offering the market a different business model for replacing windows. Instead of inflated ‘regular’ pricing, giant gimmicky discounts, and high-pressure sales that most window companies employ, Window World Twin Cities follows a business model of upfront itemized pricing on printed contracts that gives the homeowner full transparency with their bid.

From the beginning, the company grew rapidly and Terry’s wife, Mary, joined the team in 2004. In 2014, Terry retired, and Mary took over the helm of the family business. Fast forward to 2023 and Window World continues to hold an A+ rating with the Better Business Bureau, has once again earned the J D Powers Award for Highest Customer Satisfaction in the industry and is one of the few window companies to be endorsed by Good Housekeeping. Window World strives to always provide high quality products with pricing printed right on their itemized contracts. Customers can see exactly what they are getting and the price of each item. Window World’s mission is to serve each customer with honesty and integrity and to offer the best value in the Twin Cities for windows, doors, siding, and roofing.