Seaport Windows and Doors is a family-owned Los Alamitos window and door company established in 1991, specializing in replacement windows and doors for homeowners throughout the surrounding communities. The company provides personalized consultations, product recommendations, measurements, and professional installation, helping customers select solutions based on their needs, style, and budget. Its offerings include replacement windows, patio doors, bi-folding doors, entry doors, and exterior siding. Seaport Windows and Doors focuses on quality products, experienced workmanship, and customer service throughout the entire project.

1st Windows is a Signal Hill-based window and door company offering products and installation services for residential projects. The company is a certified dealer for leading window and door manufacturers, providing replacement and new construction solutions in a variety of styles and materials. Its showroom allows customers to explore window and door options and receive guidance on product selection, energy efficiency, design, and project requirements. The company also provides professional installation and specializes in replacement windows and doors.

Coastal Windows & Doors is a Long Beach-based window and door company providing products and installation services for residential projects. The company offers a variety of windows and doors, including fiberglass and vinyl windows, entry doors, and other options for home improvement and remodeling needs. Its team assists customers with product selection and provides installation services to help improve the appearance, comfort, and functionality of their homes. Coastal Windows & Doors also carries window and door hardware and related products from established manufacturers. With a focus on product selection, knowledgeable service, and professional installation, the company provides practical solutions for homeowners looking to replace or upgrade their windows and doors.

Royal Pane Windows & Doors is a Los Alamitos-based window supplier serving homeowners with quality window and door products and installation solutions. The company provides a range of window options and helps customers select products suited to their home's style, performance needs, and budget. Its team offers showroom consultations, product guidance, measurements, and professional installation for replacement window projects. Royal Pane focuses on dependable service, competitive pricing, and quality products to help homeowners improve the appearance, comfort, and efficiency of their properties.

Window Restoration and Repair is a Los Alamitos-based company specializing in the restoration and repair of older and traditional windows. The company works with wood double-hung, wood casement, steel casement, aluminum, vinyl, and other window types, helping preserve the character of older homes while improving functionality. Its team can restore damaged windows, repair wood components, improve sealing, and create historically accurate replacement windows when needed. The company focuses on practical restoration solutions that help reduce drafts, noise, heat, and dust while maintaining the original appearance of the property.