Many people know Downey as the birthplace of the oldest McDonald’s restaurant still in operation. Located in Los Angeles County, Downey offers a friendly environment making it appealing to young professionals and families. With a vibrant downtown community, the city provides plenty of opportunities for small, medium, and large-scale companies to open their business.

If you’re looking for a contractor, you can find the best commercial contractors operating in Downey located in nearby towns San Diego, Anaheim, Commerce, and Los Angeles County. To help you pick the most suitable firm, we reviewed the companies working in the area and then listed the top five commercial contractors. These companies were chosen for their years of service, their diverse clientele, and their thick portfolios of successful projects. One of the firms on this list has been in business for over a century while others have a strong background and experience building different types of building projects.  

McCarthy Building Companies, Inc.

9275 Sky Park Court, Suite #200, San Diego, CA 92123

Since 1864, McCarthy Building Companies has been constructing commercial buildings throughout the U.S. Committed to net-zero energy buildings and sustainable practices, the firm has completed $7.6 million green projects in over 150 years. As a leader in energy-efficient building techniques, the company has earned a solid reputation as one of the top green builders in the construction industry.

One of the firm’s noteworthy projects is the Metro Division 13 Bus Facility where McCarthy Building was assigned to execute the structural build-out. The company constructed a three-level concrete parking structure connected to the transportation building. Using sustainable practices, the LEED Gold-certified project resulted in improved indoor air quality and recycled construction waste. In 2020, the firm received several recognitions including the 2020 CMAA Board Choice and 2020 Innovator of the Year awards. The company’s outstanding work has also been featured in various publications including Construction Magazine.

JMF Commercial Construction

1311 W Marigold Avenue La Habra, CA 90631

For more than 20 years, JMF Commercial Construction has been providing superior quality building solutions to clients throughout Orange County and Los Angeles. Offering complete construction services for small, medium, and large enterprises, the firm has delivered projects across various industries including commercial, public, light industrial, and residential sectors. Founded in 1999, the company has been recognized for delivering exceptional building services and safety procedures with the highest standards.

Specializing in commercial construction, office remodeling, and renovation projects, JMF Commercial Construction is highly experienced in customizing services to enhance the client’s workflow. The firm’s efficient process has led to many successful projects providing a stress-free experience for clients from start to finish while maintaining the budget. Over the years, the firm has developed strong partnerships with industry experts to help minimize construction impact. The firm has also earned a Better Business Bureau (BBB) A+ rating.

DWD Builders Inc.

1930 Wilshire Boulevard, Suite #616, Los Angeles, CA 90057

DWD Builders offers a full scope of general contracting services using state-of-the-art tools and technology to deliver high-quality projects on time and within budget. Serving Los Angeles clients for a decade, the firm efficiently manages projects from pre-construction to project maintenance. With offices located in Los Angeles, New York, and Boston, the company has worked on various projects including ground-up commercial construction, renovations, and tenant improvements. Since its inception, the firm has completed numerous projects in the office, educational, retail, and hospitality industries.

DWD Builders is anchored in the values of quality, trust, and teamwork. Dedicated to providing green building solutions, the firm uses sustainable practices from delivery of materials to waste disposal. Each team member shares the same level of dedication and passion in delivering exceptional customer service and quality craftsmanship in every project. Serving customers throughout Los Angeles, the firm has earned positive reviews from clients and enjoys plenty of repeat business.

J.R. Construction

1556 S Anaheim Boulevard, Suite A, Anaheim, CA 92805

Founded in 1992, Anaheim-based J.R. Construction has completed more than 600 projects throughout California. The firm has been recognized for delivering superior quality workmanship and efficient customer service. With an extensive client portfolio, the company has worked in various industries including the commercial, office, retail, hotel, industrial, government, and educational sectors. With decades of in-depth knowledge and experience in construction, the firm guarantees customer satisfaction in every build-out from initial conception to project delivery. 

The client-focused firm ensures timely delivery of projects at a reasonable cost. Offering a broad range of general contracting services, the firm is composed of highly skilled professionals committed to providing the highest level of workmanship on every project. At J.R. Construction, each team member goes through rigorous training and ensures the safety protocols are met across all types of projects. Over the years, the firm has earned a reputation as a trusted, reliable commercial contractor in Anaheim.

Almira Restoration & Construction, Inc.

5900 S Eastern Avenue, Suite #189, Commerce, CA 90040

Located in Commerce, Almira Restoration & Construction provides complete general contracting and commercial building services for clients across Los Angeles and Orange counties. Established in 1990, the firm handles all types of build-outs including small to large-scale residential and commercial construction projects. With over three decades of service, the firm has developed a diverse clientele across different industries. From tenant improvements to modifications and upgrades, the company provides quality workmanship across all project sizes.

Almira Restoration & Construction is a well-respected general contractor and is composed of a dedicated team of carpenters, project managers, and professional staff. Each member shares the same vision of providing exceptional service through the timely delivery of projects. With years of construction expertise, the firm has developed a straightforward process to provide clients with a hassle-free experience from start to finish. With a collaborative process, the firm ensures the client’s vision and requirements are fulfilled in all aspects of construction.


  • Jake Gustafson

    Jake has served as Senior Editor at General Contractors and brings a wealth of experience rooted in his passion for building. Holding a degree in Construction Engineering Management from Oregon State University, he actively engaged in industry-related activities, including membership in the Associated General Contractors of America student chapter and participation in the Associated Schools in Construction student competition. Previously, Jake served as a project engineer for a prominent general contractor in Portland, where he played a pivotal role in various aspects of construction projects, from pre-construction to subcontractor management. His expertise extends to working on innovative projects, such as North America's largest CLT commercial building. Expertise: Commercial Construction, Commercial Remodeling, Home Design and Build Key Highlights: Editor at General Contractors, Project Engineer for Portland-based general contractor, Field Engineer for the largest CLT commercial building in North America Education: Oregon State University, Degree in Construction Engineering Management