List of Construction companies in Ontario
Ontario has 17,695 construction companies in this dataset, last verified September 9, 2026. That makes it the largest market for construction companies in Canada, with 39% of the national total, ahead of Quebec (8,393).
Among cities, Mississauga leads with 849, ahead of Markham (619) and North York (618). Together the top three hold only 12% of all construction companies in Ontario, so the market reaches well beyond its biggest cities.
Email coverage mirrors the national picture, with 4,184 records (23.6%) including an email address against 23.5% across Canada. 16,781 (94.8%) list a phone number, and 4,048 carry both.
67% of construction companies in Ontario have a website, in line with the national average of 65.6%. The 5,842 without a site are a ready-made prospect list for web design and local SEO agencies.
Among the 11,108 rated construction companies in Ontario, 76% hold a 5-star average, in line with the national figure of 73%. 594 are rated 1 to 2 stars (5.3% of rated businesses, in line with the national 5.5%), a natural shortlist for reputation management and review software.
Social Media Reach
2,178
2,276
833
497
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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Pier Pressure | Address | Birch Island | Ontario | Canada | Email | Phone | 2 | 5 | — | — | — | — | ||
 | E & T Handyman & Construction | Address | Mississauga | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | Rattana Builds | Address | Hornepayne | Ontario | Canada | Email | Phone | 26 | 5 | — | — | — | — | ||
Webber Infrastructure Management | Address | Niagara-on-the-Lake | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | SG Construction Ltd. | Address | Sarnia | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | Impactt Construction (Fire Flood & Mould - 24hr Service) | Address | Mississauga | Ontario | Canada | Email | Phone | 0 | 0 | — | |||||
 | Westlake Home Safety Services | Address | Deseronto | Ontario | Canada | Email | Phone | 2 | 5 | — | — | — | |||
PMillerreno inc | Address | Mississauga | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | Dry Con Construction | Address | North York | Ontario | Canada | Email | Phone | 0 | 0 | — | — | — | — | ||
Red Maple Building Company | Address | Cornwall | Ontario | Canada | Email | Phone | — | 5 | 4.4 | — | — | — | — | ||
UHF CONSTRUCTION | Address | Toronto | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | Davicon Forming Inc. | Address | St. Catharines | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
Little Current | Address | Gore Bay | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | ROA Inc | Address | North York | Ontario | Canada | Email | Phone | 3 | 2.3 | — | — | — | — | ||
 | Desmond Brothers Landscaping and Construction | Address | Erin | Ontario | Canada | Email | Phone | — | 15 | 4.7 | — | — | — | — |
This is a randomized preview — the full database contains 17,695 records with complete field coverage.
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17,695 verified records — emails, phones, social profiles and more. One-time payment, instant download.
Distribution by Location
Number of Construction companies across different territories
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 17,695 construction companies in Ontario, with the fields to call, email, segment and map them.
Who Sells to Construction companies in Ontario
Each of these buyers can work the 17,695 businesses in this list as a pipeline for a different product:
- Building materials and equipment suppliers: Open trade accounts with the 17,695 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 Contact Form Outreach in Ontario
Start with the 4,048 records that list both a phone number and an email address, then widen out channel by channel:
- Cold calling (16,781): 94.8% of records include a phone number for call campaigns, appointment setting and follow-ups.
- Email sequences (4,184): 23.6% of records include an email address, so use email as a follow-up touch rather than the lead channel.
- Website contact forms (3,835): businesses with a contact page URL give you another way in when no email is listed.
- 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
Filter the website, rating and social columns to pull the construction companies that fit a specific service before you pitch:
- No website listed (5,842): 33% 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 (594): businesses with poor Google ratings, prospects for reputation management and review generation services.
- No Facebook page (15,517): 88% have no Facebook page on record, an opening for social media management agencies.
Prioritize Cities Across Ontario
The 17,695 construction companies in Ontario are spread across 22 cities we track and many smaller towns, so rank areas before sending reps out:
- Top city markets: Mississauga, Markham, North York, Hornepayne and Toronto hold 19% of records in Ontario, the biggest clusters for in-person visits.
- Beyond the big cities: 10,490 records (59%) sit outside the 22 cities with their own list, reachable by phone and email without travel.
- Postal code patches: records include postal codes, so each rep can get a compact patch with no overlapping accounts.
- Route planning: records include latitude and longitude, so you can map accounts and plan visit days around clusters.
Data Coverage for Construction companies in Ontario
17,695 records · verified September 9, 2026
- Phone numbers
- 16,781
- Email addresses
- 4,184
- Phone and email
- 4,048
- Websites
- 11,853
Google ratings· 11,108 rated (63%)
76% hold 5 stars
- 1-star rated
- 340
- 3.1% of rated
- 2-star rated
- 254
- 2.3% of rated
- 3-star rated
- 1,050
- 9.5% of rated
- 4-star rated
- 1,054
- 9.5% of rated
- 5-star rated
- 8,410
- 75.7% of rated
Social profiles:
- Instagram:2,276· 12.9%
- Facebook:2,178· 12.3%
- LinkedIn:833· 4.7%
- X (Twitter):510· 2.9%
- YouTube:497· 2.8%
Construction companies in Ontario are a phone-first market: 94.8% list a phone number but only 23.6% publish an email. Among 11,108 rated construction companies, 76% hold 5 stars, a spread heavily skewed to the top, so low ratings stand out.
Related Construction companies by Location
Browse datasets for Construction companies across nearby locations
Frequently asked questions about Construction companies in Ontario
Everything you need to know about our construction companies database for Ontario: data quality, coverage, freshness, pricing, and formats. Last updated September 9, 2026.
How many Construction companies are there in Ontario?
There are 17,695 construction companies in Ontario in our verified database, as of September 9, 2026.
This covers independent operators, regional chains, and enterprise-scale businesses, across every city in Ontario, for sales prospecting, competitive research, and territory planning.
How up to date is the Construction companies data for Ontario?
This dataset was last updated in September 9, 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?
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?
InfiniteLeadsHub provides verified market intelligence datasets for construction companies businesses in Ontario 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 cost?
The complete construction companies leads database for Ontario costs $139 as a one-time payment.
You get instant access to all 17,695 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 specifically, a one-time $139 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 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 have phone numbers?
16,781 construction companies in Ontario (95% 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 have email addresses?
4,184 construction companies in Ontario (24%) 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 have both a phone number and an email address?
4,048 construction companies in Ontario 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 are active on social media?
Social profile coverage for construction companies in Ontario: 833 on LinkedIn, 2,178 on Facebook, 2,276 on Instagram, 497 on YouTube, 510 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 have a website?
11,853 construction companies in Ontario (67%) 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 do not have a website?
5,842 construction companies in Ontario 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?
Rating breakdown for construction companies in Ontario: 8,410 with a 5-star rating, 1,054 with a 4-star rating, 1,050 with a 3-star rating, 254 with a 2-star rating, 340 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 other states or the entire US?
Yes. The national Construction companies database covers all 50 US states, and individual state and major-city lists are also available.
If you buy Ontario first, contact us and we'll credit your purchase toward the national upgrade.
Most multi-state buyers save money going national.
Is the Construction companies contact data in Ontario 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.