Find and Invite the Best Commercial Roofing Contractors in Ontario, CA

Tired of outdated contact lists and the hassle of calling to check bidding intent? Simplify your bidding process with Downtobid's modern commercial contractor database. Access up-to-date, vetted profiles and ensure you connect with the right trades.

Select trade


Search location

75 Verified Roofing companies in Ontario, CA

Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.

Best Contracting Services logo

Best Contracting Services

Gardena, CA 90249

Best Contracting Services, Inc. is a professional contracting organization that has been providing construction services since 1982. The company offers a range of services including roofing, waterproofing, glazing, and architectural metal wall panels to industrial, commercial and institutional properties in both private and public sectors.

Verified


6 miles from Ontario, CA

Specializations (21)

Airport

Casino

Correctional

Education

Website

Call

WebsiteCall
Click to reveal
View details
McCormack Roofing logo

McCormack Roofing

1260 N. Hancock St. Ste. 108 Anaheim, CA 92807

McCormack Roofing is a Southern California-based company with a decades-long history of providing quality roofing, construction, and energy-related contracting services, established in 1992. They offer residential and commercial roofing solutions, including maintenance and repair services, with a focus on customer satisfaction and home improvement.

Verified


14 miles from Ontario, CA

Specializations (9)

Education

Federal Government

Government

Grocery

Click to reveal
View details
Division 7 Services logo

Division 7 Services

Riverside, CA 92503

Division 7 Services, Inc. is a multi-disciplinary company specializing in roofing, waterproofing, and architectural metal assemblies, offering full-service project management and a commitment to client satisfaction as evidenced by their repeat business.

Verified


7 miles from Ontario, CA

Specializations (7)

Financial

Higher education

Hospitality

Office Building

Click to reveal
View details

Looking for a Roofing subcontractor with a specific specialization?

Add filters to refine the results:

Cool Roofing logo

Cool Roofing

23 Saratoga Newport Beach, CA 92660

Cool Roofing Inc. specializes in the installation and maintenance of commercial cool roofing systems across Southern California, with four generations of roofing expertise. They serve a diverse clientele, offering services such as new commercial roof installation, roofing repairs, and re-covers, and are known for their cost-saving benefits in areas like Los Angeles County, Orange County, San Bernardino County, Riverside County, and San Diego County.

Verified


14 miles from Ontario, CA

Specializations (5)

Government

Grocery

Healthcare

Municipal Government

Click to reveal
View details
3 Kings Enterprises logo

3 Kings Enterprises

2474 N Smoketree Ave, Rialto, CA 92377

3 Kings Enterprises is a roofing and sheet metal services company with 30 years of experience in the industry. They offer a comprehensive range of services from roof repairs to complete roof installations, ACM, siding and custom sheet metal work.

Verified


Click to reveal
View details
Bishop logo

Bishop

1928 W Business Center Dr, Orange, CA 92867

Bishop, Inc. is a fully qualified roofing and paving company based in Southern California with over 100 years of experience. The company has successfully managed projects for clients such as the General Services Administration (GSA), US Army, and US Navy, and offers services in roofing, waterproofing, metal systems, paving, and concrete services.

Verified


14 miles from Ontario, CA

Specializations (10)

Federal Government

Financial

Government

Grocery

Click to reveal
View details
Galla-Rini Roofing logo

Galla-Rini Roofing

Orange, CA 92869

Galla-Rini Roofing is an Orange County, California-based roofing company specializing in roof repair, replacement, and installation with over 30 years of experience and a commitment to quality and dependability in every project.

Verified


14 miles from Ontario, CA

Specializations (2)

Financial

Grocery

Click to reveal
View details
CRS Commercial logo

CRS Commercial

Ontario, CA 91762

CRS Commercial Roofing & Sheet Metal is a full-service roofing and architectural sheet metal contractor serving California. The company specializes in single-ply membranes, new replacement, leak diagnostics and repairs, and roof maintenance.

Verified


Specializations (4)

Grocery

Office Building

Restaurant

Venue

Click to reveal
View details
Copp Roofing & Construction logo

Copp Roofing & Construction

26852 Highway 189 Blue Jay, CA 92317

Copp Roofing & Construction is a California-based company with over 25 years of experience, specializing in residential and commercial roofing, solar construction, decking, siding, and interior construction services. They are recognized for their commitment to quality, integrity, and safety, holding prestigious certifications such as GAF Master Elite and offering comprehensive warranties.

Verified


Specializations (3)

Financial

Office Building

Tenant Improvements

Click to reveal
View details
Rey-Crest Roofing & Waterproofing logo

Rey-Crest Roofing & Waterproofing

3065 Verdugo Rd, Los Angeles, CA 90065

Rey-Crest Roofing & Waterproofing, founded in 1969, is a customer service-oriented company with an excellent reputation in the roofing industry, known for its high-quality workmanship and service. They are fully licensed and insured, and have completed a variety of projects including churches, schools, hospitals, and more across commercial, industrial, institutional, and residential sectors.

Verified


6 miles from Ontario, CA

Specializations (5)

Education

Financial

Healthcare

Office Building

Click to reveal
View details
Long Beach Roofing logo

Long Beach Roofing

Signal Hill, CA 90755

Long Beach Roofing is a high-performance roofing and sheet metal company recognized as the best in its region, offering a full range of services including commercial roofing, roof maintenance, and sheet metal solutions with a commitment to customer satisfaction as measured by feedback from employees, vendors, and clients.

Verified


6 miles from Ontario, CA

Specializations (8)

Airport

Education

Healthcare

Higher education

Click to reveal
View details
Western Roofing Systems logo

Western Roofing Systems

Anaheim, CA 92806

Western Roofing Systems is a family-owned roofing contractor serving California since 1992, specializing in the installation and repair of various roofing materials including asphalt shingles, concrete tile, metal roofing, and stone-coated steel systems. Recognized as a leader in metal roof installations, they offer comprehensive services from project management to final installation, and have completed over 10,000 installations across California.

Verified


14 miles from Ontario, CA

Specializations (8)

Education

Grocery

Hospitality

Office Building

Click to reveal
View details
Stone Roofing Company logo

Stone Roofing Company

Azusa, CA 91702

Stone Roofing Company Inc. is a full-service commercial roofing company based in Los Angeles County, California. The company specializes in flat re-roofing and commercial roof repairs, and serves a variety of sectors including retail, commercial, warehousing, hospitals, manufacturing, education, entertainment, and food processing.

Verified


6 miles from Ontario, CA

Specializations (17)

Education

Financial

Fitness

Government

Click to reveal
View details
Castro Roofing logo

Castro Roofing

Palm Desert, CA 92260

Castro Roofing Inc. is a family-owned full-service roofing contracting firm that has been providing quality roofing systems and customer service in Coachella Valley, CA since 2003. The company, founded by Richard Castro and his wife Linda, is now owned by Eric Castro and is fully licensed, bonded, and insured.

Verified


7 miles from Ontario, CA

Specializations (2)

Hospitality

Office Building

Click to reveal
View details
Woolbright's Roofing & Construction logo

Woolbright's Roofing & Construction

Wildomar, CA 92595

Woolbright's Roofing & Construction, Inc. is a full-service roofing company based in Southern California, offering residential and commercial roofing services, including leak detection, repair, replacement, restoration, inspection, and maintenance for over 30 years.

Verified


7 miles from Ontario, CA

Specializations (10)

Casino

Education

Federal Government

Financial

Click to reveal
View details
ontario map
Have a project bidding in Ontario, CA?
Upload your plans and reach qualified local subs in Ontario, CA in just a few clicks

Related Trades

Steep Slope Roofing

Shingles and Shakes

Roof Tiles

Roof Panels

Membrane Roofing

Built-Up Bituminous Roofing

Modified Bituminous Membrane Roofing

Fluid-Applied Roofing

Coated Foamed Roofing

What the Early Adopters are Saying About Downtobid

"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"

Robyn LynnMRI Builders

"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."

Zalmy KavkaFounder, ZK Builders

""I love, the personalization of it. You get it more directed towards the contractors that we need. You, make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more, more specific, more detailed quotes, more the correct quotes that we're looking for from you guys as opposed to maybe other places.""

Ryan PastorEstimator at George H. Pastor and Sons General Contracting

What the Early Adopters are Saying About Downtobid

"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"

Robyn LynnMRI Builders

"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."

Zalmy KavkaFounder, ZK Builders

""I love, the personalization of it. You get it more directed towards the contractors that we need. You, make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more, more specific, more detailed quotes, more the correct quotes that we're looking for from you guys as opposed to maybe other places.""

Ryan PastorEstimator at George H. Pastor and Sons General Contracting

FAQs

What is Downtobid and how can it help find Roofing professionals in Ontario, CA?

Downtobid is a platform that helps you find Roofing contractors in Ontario, CA and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.


Requesting bids from Ontario, CA-based Roofing contractors

You can invite a contractor directly through our platform. Visit the contractor’s profile and click ‘Invite to Bid.’ Fill out the project details, including scope, timeline, and specific needs. Contractors in Ontario, CA will then respond with their bids. It’s often helpful to call contractors after submitting a request, especially if your project is urgent.


Contractor verification process on Downtobid

Downtobid sets itself apart by verifying each contractor through a multi-step process. We use AI to ensure that contractor information, including trades, is accurate. We cross-check details using databases, public records, and Google Maps to confirm that businesses are active and their contact information is up-to-date before listing them.


Essential information for Roofing project bid requests

When submitting a bid request, include clear details about your project, such as materials needed, deadlines, and any specific requirements. The more specific you are, the better the contractor can assess and quote the job accurately.


Tips for contacting local Roofing professionals

If your project is urgent, it’s a good idea to call the contractor directly after submitting a bid request. This helps ensure they understand the timeline and scope of work, especially if immediate service is needed.


Managing bids for large-scale Roofing projects

If you have a larger project and don’t want to contact each contractor individually, you can reach out to us directly. We offer an ITB (Invitation to Bid) platform where you can manage bids from multiple contractors at once.


Expected response times from Ontario, CA contractors

Most Roofing contractors will respond within 24-48 hours, depending on the complexity of your request. However, response times may vary – so be sure to follow up!

Quick stats about Roofing companies database in Ontario, CA

Total contractors

337 contractors

Total union contractors

3 union contractors

Total non union contractors

177 non union contractors

Total minority owned businesses

14 minority owned businesses

Total women owned businesses

3 women owned businesses

Average response time

3 days

Browse Subcontractors