Cornejos Builders ADU Construction & Home Building

Cornejos Builders ADU Construction & Home Building is a Construction Company in Downey, CA. The firm serves homeowners in Downey, Los Angeles, and Orange County, with specific mention of Cypress and Whittier. They specialize in ADU construction, home additions, and full-service remodeling. Owner Alexsander Cornejo founded the company in 2009 after starting work in the industry with his father. He personally leads every consultation and project, ensuring direct involvement from the initial property walkthrough to the final inspection. The business handles comprehensive project management, including permits, architectural design, plumbing, and electrical work, to deliver turnkey-ready results.

Cornejo emphasizes transparent communication and thorough site inspections, noting experience with structural assessments for older homes. The team focuses on quality craftsmanship, treating each property with respect and maintaining open dialogue to align with the homeowner’s vision. Clients have highlighted the owner’s accessibility, fair pricing, and ability to accommodate budget constraints and timeline adjustments. The company’s approach includes continuous education to stay current with construction standards, aiming to provide reliable service and practical recommendations for renovations, kitchen remodels, and bathroom upgrades.

Cornejos Builders ADU Construction & Home Building holds a 4.60 rating based on customer reviews. Clients consistently praise the owner’s hands-on management, professional crew, and ability to deliver high-quality work on time. The business is recognized for its clear communication, efficient project execution, and commitment to customer satisfaction throughout the construction process.

Cornejos Builders ADU Construction & Home Building combines decades of hands-on construction experience with a personalized, owner-led approach to ADU and home building projects in Downey.

Located on Elmont Ave in Downey, the business sits about a tenth of a mile from the Santa Ana Freeway and Paramount Boulevard. It is also near Telegraph Road, roughly a third of a mile away, and close to Gallatin Elementary School at a distance of half a mile.

BizScoreAI awarded the business a Discoverability score of 100 out of 100, which ensures AI crawlers can find every page of the website so AI assistants can recommend the company. The Technical score is 94 out of 100, confirming the website is secure and indexable for search engines to read without errors.