Design Windows and Doors is a family-owned business with over 40 years of combined experience in the window and door replacement industry, offering high-quality replacement windows and doors to homeowners throughout Southern California, with a comprehensive selection of styles and expert installation by certified professionals.
Many customers praised the professionalism of the installation crew, project managers, and sales team, and the quality of the windows and doors installed.
Some customers experienced issues with estimates, installation quality, and communication, including lack of transparency, poor quality work, and unresponsiveness.
Read verified customer reviews of the most reliable window and door suppliers in Ontario, CA. Save time and money by comparing prices, getting expert recommendations, and finding the perfect fit for your needs. 
