List of Construction companies in Markham
Markham, Ontario, has 619 construction companies in this dataset, last verified September 9, 2026. It is the second-largest of the 22 Ontario cities we track, behind Mississauga (849) and ahead of North York (618). Local listings make up 3.5% of all construction companies in Ontario.
123 construction companies in Markham list both a phone number and an email address, the best starting point for multi-channel outreach. Email coverage is below the Ontario average, 21% against 23.6%, so expect phone (95.2% coverage) to do most of the work.
69.6% of construction companies in Markham have a website (in line with 67% across Ontario), which leaves 188 local prospects for web design and Google Business Profile services. 116 of their websites list a contact page URL.
82% of the 368 rated construction companies in Markham hold a 5-star average, above the Ontario figure of 76%. The 18 rated 1 to 2 stars are the obvious first calls for a reputation management pitch.
Social Media Reach
64
79
27
13
YouTube
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Construction companies List in Markham
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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Fils drywall finishing | Address | Markham | Ontario | Canada | Email | Phone | 0 | 0 | — | — | — | — | ||
 | AGT Renovations and Custom Building | Address | Markham | Ontario | Canada | Email | Phone | — | 1 | 1 | — | — | — | — | |
 | Royaltura Renovations | Address | Markham | Ontario | Canada | Email | Phone | 4 | 5 | — | — | — | — | ||
 | Platinum Bathrooms - Toronto Bathroom Contractors | Address | Markham | Ontario | Canada | Email | Phone | 22 | 5 | — | — | ||||
 | Northline Builders | Address | Markham | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
Regency Construction Group | Address | Markham | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | Let's Renovate | Address | Markham | Ontario | Canada | Email | Phone | 9 | 5 | — | — | — | — | ||
 | Lotwell Developments | Address | Markham | Ontario | Canada | Email | Phone | 0 | 0 | — | — | — | — | ||
 | MapleTrust Restoration Inc | Address | Markham | Ontario | Canada | Email | Phone | 2 | 5 | — | — | ||||
 | Otter Crescent Construction Inc. | Address | Markham | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | PrimoVickerson Restoration & Renovation Co. | Address | Markham | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | Renovation Gurus | Address | Markham | Ontario | Canada | Email | Phone | 0 | 0 | — | — | — | — | ||
 | Demex Contracting | Address | Markham | Ontario | Canada | Email | Phone | 8 | 5 | — | — | ||||
 | NHK Home Developers Inc | Address | Markham | Ontario | Canada | Email | Phone | — | 1 | 5 | — | — | — | — | |
 | Dellmon Decommissioning | Address | Markham | Ontario | Canada | Email | Phone | 0 | 0 | — | — |
This is a randomized preview — the full database contains 619 records with complete field coverage.
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619 verified records — emails, phones, social profiles and more. One-time payment, instant download.
Top business categories in Markham
Most popular business categories across Markham
Category | Construction companies |
|---|---|
What You Can Do with the List of Construction companies in Markham
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 619 construction companies in Markham, with the fields to call, email, segment and map them.
Who Sells to Construction companies in Markham, Ontario
Each of these buyers can work the 619 businesses in this list as a pipeline for a different product:
- Building materials and equipment suppliers: Open trade accounts with the 619 construction companies in Markham 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 Markham, Ontario
Start with the 123 records that list both a phone number and an email address, then widen out channel by channel:
- Cold calling (589): 95.2% of records include a phone number for call campaigns, appointment setting and follow-ups.
- Email sequences (130): 21% of records include an email address, so use email as a follow-up touch rather than the lead channel.
- Website contact forms (116): 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 Markham, Ontario
Filter the website, rating and social columns to pull the construction companies that fit a specific service before you pitch:
- No website listed (188): 30% of construction companies in Markham have no website on record, a direct prospect list for web designers and local SEO agencies.
- Rated 1 to 2 stars (18): businesses with poor Google ratings, prospects for reputation management and review generation services.
- No Facebook page (555): 90% have no Facebook page on record, an opening for social media management agencies.
Local Coverage Plan for Markham
With 619 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 619 construction companies in Markham and plan visit days by neighborhood.
- Postal code patches: split Markham by postal code to divide accounts between reps or focus on specific parts of town.
- Next markets: the 21 other Ontario cities we track are the next step once Markham accounts are covered.
Data Coverage for Construction companies in Markham
619 records · verified September 9, 2026
- Phone numbers
- 589
- Email addresses
- 130
- Phone and email
- 123
- Websites
- 431
Google ratings· 368 rated (59%)
82% hold 5 stars
- 1-star rated
- 9
- 2.4% of rated
- 2-star rated
- 9
- 2.4% of rated
- 3-star rated
- 28
- 7.6% of rated
- 4-star rated
- 19
- 5.2% of rated
- 5-star rated
- 303
- 82.3% of rated
Social profiles:
- Instagram:79· 12.8%
- Facebook:64· 10.3%
- LinkedIn:27· 4.4%
- X (Twitter):21· 3.4%
- YouTube:13· 2.1%
Construction companies in Markham are a phone-first market: 95.2% list a phone number but only 21% publish an email. Among 368 rated construction companies, 82% hold 5 stars, a spread heavily skewed to the top, so low ratings stand out.
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Frequently asked questions about Construction companies in Markham, Ontario
Everything you need to know about our construction companies database for Markham, Ontario: data quality, coverage, freshness, pricing, and formats. Last updated September 9, 2026.
How many Construction companies are there in Markham, Ontario?
There are 619 construction companies in Markham, Ontario in our verified database, as of September 9, 2026.
This covers independent operators, regional chains, and enterprise-scale businesses, giving you the complete Markham market for sales prospecting and territory planning.
How up to date is the Construction companies data for Markham, 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 Markham, 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 Markham, Ontario?
InfiniteLeadsHub provides verified market intelligence datasets for construction companies businesses in Markham, 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 Markham, Ontario cost?
The complete construction companies leads database for Markham, Ontario costs $10 as a one-time payment.
You get instant access to all 619 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 Markham, Ontario 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 Markham, 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 Markham, Ontario have phone numbers?
589 construction companies in Markham, 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 Markham, Ontario have email addresses?
130 construction companies in Markham, Ontario (21%) 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 Markham, Ontario have both a phone number and an email address?
123 construction companies in Markham, 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 Markham, Ontario are active on social media?
Social profile coverage for construction companies in Markham, Ontario: 27 on LinkedIn, 64 on Facebook, 79 on Instagram, 13 on YouTube, 21 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 Markham, Ontario have a website?
431 construction companies in Markham, Ontario (70%) 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 Markham, Ontario do not have a website?
188 construction companies in Markham, 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 Markham, Ontario?
Rating breakdown for construction companies in Markham, Ontario: 303 with a 5-star rating, 19 with a 4-star rating, 28 with a 3-star rating, 9 with a 2-star rating, 9 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 Ontario or the entire US?
Yes. Beyond Markham, we offer the complete Construction companies database for Ontario and a national all-50-states version.
If you buy the Markham list first, contact us and we'll credit your purchase toward the state or national upgrade.
Is the Construction companies contact data in Markham, 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.