Lead directory · Ontario

Local business leads in Markham, ON

2,300+ Markham businesses across 13 trades and services — phone numbers, 623 email addresses and Google ratings.

Search Markham freeBrowse by trade
2,300+
businesses
100%
have a phone number
26%
have an email address (623)
4.6★
average Google rating
By trade

What's in Markham

TradeBusinessesWith emailAvg ratingNo website
Construction companies8502244.6★278
Law firms374585.0★106
Medical clinics30858—145
Dental clinics16733—57
HVAC companies163614.8★36
Cleaning companies145464.6★37
Landscaping companies125484.6★32
Electrical contractors114384.6★32
Property maintenance companies87454.0★11
Roofing companies81274.4★30
Painting companies80284.8★22
Plumbing companies50154.9★16
Pest control companies32134.7★5
The market

Markham at a glance

2,300+ local service businesses in Markham in our database, refreshed October 2026.
26% publish an email address — 623 you can reach by cold email.
760 have no website listed and 1,800+ have no Google rating yet.
77% of rated businesses hold 4.5★ or better.

Area codes

  • (905)1,400+
  • (647)388
  • (416)316
  • (289)76
  • (437)41
  • (888)20

A few Markham businesses

  1. World Class Paint & Design IncPainting · 5.0★
  2. Wynford ServicesCleaning · 4.7★
  3. Tony's property services Inc.Pest Control, Property Maintenance · 5.0★
  4. RockLeaf Landscaping & ConstructionLandscaping · 4.9★
  5. Unique Kitchen Cabinets Refinishing & RefacingPainting · 4.9★
  6. Elg servicesPainting, Property Maintenance · 5.0★
  7. Air Leaders Inc.HVAC · 4.9★
  8. Span-Co General Contracting Services LTD.Painting, Construction · 5.0★
Reaching out in CanadaCold email to Canadian businesses falls under CASL, and phone outreach falls under the CRTC's telemarketing rules. A business address that's published publicly can support implied consent for messages relevant to that business, but every email still needs your identity and a working unsubscribe. Read our plain-English CASL guide and cold-calling rules before your first campaign.

Nearby in Ontario

TorontoMississaugaOttawaNorth YorkBramptonLondonScarboroughOakvilleWindsorEtobicokeAll cities →

Find your next customers in Markham

25 free credits, no card. Try "roofers in Markham".

Get these leads freeSee pricing