List of Construction companies in Ontario
Ontario, California, has 128 construction companies in this dataset, last verified September 6, 2026. Among the 67 California cities we track, it ranks 47th, between Redding (128) and Roseville (127). Local listings make up 0.6% of all construction companies in California.
37 construction companies in Ontario list both a phone number and an email address, the best starting point for multi-channel outreach. Email coverage of 28.9% is in line with the California average (30.6%), and 96.1% of listings include a phone number.
72.7% of construction companies in Ontario have a website (above 64.5% across California), which leaves 35 local prospects for web design and Google Business Profile services. 27 of their websites list a contact page URL.
65% of the 85 rated construction companies in Ontario hold a 5-star average, below the California figure of 73%. The 2 rated 1 to 2 stars are the obvious first calls for a reputation management pitch.
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27
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YouTube
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Construction companies List in Ontario
Browse a random sample of 15 records — see the exact fields and data quality before you download.
| LOGO | Business Name | Address | City | State | Country | Phone | Website | Reviews | Rating | FB | IG | LI | YT | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Monumental Construction Inc. | Address | Ontario | California | United States | Email | Phone | — | 4 | 5 | — | — | — | — | ||
 | Interior Building Construction | Address | Ontario | California | United States | Email | Phone | 9 | 5 | — | — | — | — | ||
KAR Construction Inc | Address | Ontario | California | United States | Email | Phone | 7 | 4.4 | — | — | — | — | |||
 | Tays Landing by Meritage Homes | Address | Ontario | California | United States | Email | Phone | 8 | 3.9 | — | |||||
 | CBX Construction | Address | Ontario | California | United States | Email | Phone | 5 | 5 | — | — | — | — | ||
 | San Bernardino Moulding | Address | Ontario | California | United States | Email | Phone | 0 | 0 | — | — | — | — | ||
 | New Haven by Brookfield Residential | Address | Ontario | California | United States | Email | Phone | 87 | 4.3 | — | — | — | — | ||
Absolute kitchen Bath Remodeling Ontario | Address | Ontario | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | Classic Kitchens, Etc. | Address | Ontario | California | United States | Email | Phone | 52 | 5 | — | — | — | — | ||
Next Level Construction Inc | Address | Ontario | California | United States | Email | Phone | — | 1 | 5 | — | — | — | — | ||
 | The Resort at New Haven | Address | Ontario | California | United States | Email | Phone | 84 | 4.6 | — | — | — | |||
 | Garcon Construction, Inc. | Address | Ontario | California | United States | Email | Phone | 6 | 4.5 | — | — | — | |||
 | Peri+Rubi by Risewell Homes | Address | Ontario | California | United States | Email | Phone | 9 | 3.8 | — | — | — | — | ||
 | Ryan Homes at Renaissance Court | Address | Ontario | New York | United States | Email | Phone | 5 | 5 | — | — | — | — | ||
 | Precision General Commercial Contractors, Inc. - Ontario Office | Address | Ontario | California | United States | Email | Phone | 0 | 0 | — | — | — | — |
This is a randomized preview — the full database contains 128 records with complete field coverage.
Get the full Construction companies database
128 verified records — emails, phones, social profiles and more. One-time payment, instant download.
Top business categories in Ontario
Most popular business categories across Ontario
Category | Construction companies |
|---|---|
What You Can Do with the List of Construction companies in Ontario
This list is built for teams that sell to construction companies: building materials suppliers, construction software vendors, contractor insurers and home services marketing agencies. It covers 128 construction companies in Ontario, with the fields to call, email, segment and map them.
Who Sells to Construction companies in Ontario, California
Each of these buyers can work the 128 businesses in this list as a pipeline for a different product:
- Building materials and equipment suppliers: Open trade accounts with the 128 construction companies in Ontario and offer bulk pricing, delivery and credit terms.
- Estimating and field service software: Pitch quoting, scheduling, invoicing and job tracking tools to owners running crews.
- Contractor insurance, bonding and financing: Reach businesses that need liability cover, surety bonds or truck and equipment loans.
- Home services marketing agencies: Offer local SEO, Google Ads and lead generation to trades competing for local jobs.
Phone, Email and Facebook Outreach in Ontario, California
Start with the 37 records that list both a phone number and an email address, then widen out channel by channel:
- Cold calling (123): 96.1% of records include a phone number for call campaigns, appointment setting and follow-ups.
- Email sequences (37): 28.9% of records include an email address, enough to run a dedicated cold email campaign alongside calls.
- Facebook messages (33): 25.8% have a Facebook page, a further channel when calls and emails go unanswered.
- CRM import: CSV and Excel files load into HubSpot, Salesforce, Zoho or Pipedrive, with city, state and postal code columns for assigning leads to reps.
Prospect Segments for Agencies in Ontario, California
Filter the website, rating and social columns to pull the construction companies that fit a specific service before you pitch:
- No website listed (35): 27% of construction companies in Ontario have no website on record, a direct prospect list for web designers and local SEO agencies.
- Rated 1 to 2 stars (2): businesses with poor Google ratings, prospects for reputation management and review generation services.
- No Facebook page (95): 74% have no Facebook page on record, an opening for social media management agencies.
Local Coverage Plan for Ontario
With 128 construction companies in one city, local teams can work the list in person as well as by phone:
- Route planning: records include latitude and longitude, so field reps can map all 128 construction companies in Ontario and plan visit days by neighborhood.
- Postal code patches: split Ontario by postal code to divide accounts between reps or focus on specific parts of town.
- Next markets: the 66 other California cities we track are the next step once Ontario accounts are covered.
Data Coverage for Construction companies in Ontario
128 records · verified September 6, 2026
- Phone numbers
- 123
- Email addresses
- 37
- Phone and email
- 37
- Websites
- 93
Google ratings· 85 rated (66%)
65% hold 5 stars
- 1-star rated
- 1
- 1.2% of rated
- 2-star rated
- 1
- 1.2% of rated
- 3-star rated
- 16
- 18.8% of rated
- 4-star rated
- 12
- 14.1% of rated
- 5-star rated
- 55
- 64.7% of rated
Social profiles:
- Facebook:33· 25.8%
- Instagram:27· 21.1%
- LinkedIn:20· 15.6%
- X (Twitter):15· 11.7%
- YouTube:15· 11.7%
Construction companies in Ontario are a phone-first, Facebook-heavy market: 96.1% list a phone number but only 28.9% publish an email. Among 85 rated construction companies, 65% hold 5 stars, a mostly positive spread.
Related Construction companies by Location
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Frequently asked questions about Construction companies in Ontario, California
Everything you need to know about our construction companies database for Ontario, California: data quality, coverage, freshness, pricing, and formats. Last updated September 6, 2026.
How many Construction companies are there in Ontario, California?
There are 128 construction companies in Ontario, California in our verified database, as of September 6, 2026.
This covers independent operators, regional chains, and enterprise-scale businesses, giving you the complete Ontario market for sales prospecting and territory planning.
How up to date is the Construction companies data for Ontario, California?
This dataset was last updated in September 6, 2026.
Business contact data decays at roughly 2–3% per month as businesses close, move, or change details, so we re-verify our most-purchased datasets on a rolling basis.
Every file is also run through email verification before delivery, and past buyers are offered discounted refreshed versions as updates ship.
What fields are included in the Construction companies database for Ontario, California?
Each record can include: business name, full address, phone number, email address, website URL, social profiles (LinkedIn, Facebook, Instagram, YouTube, X), review ratings, and category details, plus contact-page URLs where available.
Field coverage varies by record; the counts below and the free sample show you exactly what to expect before buying.
Where can I buy verified market intelligence data for Construction companies businesses in Ontario, California?
InfiniteLeadsHub provides verified market intelligence datasets for construction companies businesses in Ontario, California as a one-time purchase with no subscription.
Ideal for market research, sales planning, and business development.
How much does the Construction companies database for Ontario, California cost?
The complete construction companies leads database for Ontario, California costs $10 as a one-time payment.
You get instant access to all 128 records with no recurring fees, no per-record charges, and no seat limits.
It is a cost-effective alternative to subscription platforms that charge monthly for the same public business data.
Is this a cheaper alternative to subscription lead databases like ZoomInfo or Apollo?
Yes. For teams that need construction companies contacts in Ontario, California specifically, a one-time $10 file is usually far cheaper than subscription platforms, which typically charge thousands of dollars per year with contracts and per-seat pricing.
Subscriptions make sense for large sales teams needing continuous multi-industry access; a one-time targeted list makes sense when you know exactly which niche and geography you're selling into.
Can I preview a sample of the Construction companies data before buying?
Yes. A free sample dataset is available so you can evaluate data quality, field coverage, and format before purchasing.
The sample is a representative slice of the full Ontario, California construction companies database, including contact fields, social profiles, and ratings data.
How do I download the Construction companies list, and what file formats are available?
You get instant access after purchase. Files are delivered in CSV and Excel (XLSX) formats.
CSV and Excel import directly into CRMs like Salesforce, HubSpot, and Zoho and into any email platform.
How many Construction companies in Ontario, California have phone numbers?
123 construction companies in Ontario, California (96% of the database) include a phone number.
That makes the dataset effective for cold calling, telemarketing, and appointment setting campaigns.
How many Construction companies in Ontario, California have email addresses?
37 construction companies in Ontario, California (29%) include an email address.
Email remains one of the highest-ROI B2B outreach channels, making this subset ideal for cold email sequences, product announcements, and drip campaigns.
How many Construction companies in Ontario, California have both a phone number and an email address?
37 construction companies in Ontario, California have both a phone number and an email address.
Dual-contact records enable multi-channel outreach: combining calls with email follow-ups measurably improves response rates.
How many Construction companies in Ontario, California are active on social media?
Social profile coverage for construction companies in Ontario, California: 20 on LinkedIn, 33 on Facebook, 27 on Instagram, 15 on YouTube, 15 on X (Twitter).
Social presence signals digitally engaged businesses, which is useful for agencies pitching social media services, ad platforms building audiences, and vendors targeting digitally mature prospects.
How many Construction companies in Ontario, California have a website?
93 construction companies in Ontario, California (73%) have an active business website.
That is an indicator of digital maturity, and an ideal segment for SEO agencies, hosting providers, and SaaS platforms.
How many Construction companies in Ontario, California do not have a website?
35 construction companies in Ontario, California operate without a business website.
These are high-intent, overlooked prospects for web design agencies, local SEO providers, and Google Business optimization services.
What are the review ratings of Construction companies in Ontario, California?
Rating breakdown for construction companies in Ontario, California: 55 with a 5-star rating, 12 with a 4-star rating, 16 with a 3-star rating, 1 with a 2-star rating, 1 with a 1-star rating.
Top-rated businesses suit premium services and partnership proposals; lower-rated businesses are receptive prospects for reputation management, review tools, and operational software.
Can I get Construction companies data for all of California or the entire US?
Yes. Beyond Ontario, we offer the complete Construction companies database for California and a national all-50-states version.
If you buy the Ontario list first, contact us and we'll credit your purchase toward the state or national upgrade.
Is the Construction companies contact data in Ontario, California legal to use for B2B outreach?
Yes. All data is sourced exclusively from publicly available information: Google Business listings, company websites, social media profiles, and public business directories.
This is business contact information, not personal consumer data, making it appropriate for B2B prospecting.
We recommend following applicable regulations such as CAN-SPAM (US), CASL (Canada), and GDPR (EU-targeted campaigns) so your outreach remains fully compliant.