Construction companies · Ontario

Construction companies in Thornhill, ON

262 contractors in Thornhill with phone numbers, 36 with email addresses. Search the list, unlock the ones you want and start calling today.

Get the Thornhill list freeSee a sample
262
businesses
100%
have a phone number
14%
have an email address (36)
—
average Google rating
Sample

A sample of construction companies in Thornhill

Twelve of the 262 contractors on the list. Phone numbers and emails unlock in the app — 1 credit per business, both together.

BusinessCategoryRatingWebsitePhoneEmail
The Fireplace ClubConstruction Supplies Store—Yes(905) •••-••••Available
Kva Electrical Systems LtdConstruction Supplies Store—Yes(905) •••-••••Available
ES HVAC Design & ServiceConstruction Supplies Store—Yes(647) •••-••••Available
Lou's Drywall Accessories LtdConstruction Supplies Store—Yes(905) •••-••••Available
Fara ConstructionGeneral Contractor—Yes(416) •••-••••Available
Concrete Your WayConstruction Supplies Store—Yes(416) •••-••••Available
Heritage KitchensGeneral Contractor; Kitchen Remodeler—Yes(905) •••-••••Available
New Water PlumbingConstruction Supplies Store—Yes(905) •••-••••Available
Pride Design Build LtdConstruction Supplies Store—Yes(647) •••-••••Available
HRC GroupConstruction Supplies Store—Yes(647) •••-••••Available
On Time LocksmithConstruction Supplies Store—Yes(647) •••-••••Available
Floor Direct NorthConstruction Supplies Store—Yes(905) •••-••••Available

Showing 12 of 262. Data refreshed October 2026.

The market

What Thornhill's contractors look like

0% of rated contractors here hold 4.5★ or better — there is room for businesses that push for reviews.
0 carry a perfect 5.0★ rating; 262 have no rating yet — prime prospects for review and reputation services.
159 (61%) have no website listed — a ready-made list for web design and SEO offers.
9% link a Facebook or Instagram page from their listing.

Most common listings

  • General Contractor73
  • Construction Supplies Store52
  • Home Improvement Service24
  • Carpet and Flooring Contractor20
  • Carpenter9
  • Carpet and Flooring Contractor; General Contractor9

Area codes

  • (905)158
  • (416)52
  • (647)41
  • (289)9
  • (855)1
  • (613)1
Playbook

How to sell to contractors in Thornhill

This category covers general contractors, renovation firms, builders, excavators and concrete and framing companies. Projects are larger and longer, and the person you need is usually the owner or the estimator.

Who sells to contractors

  • Construction software (estimating, scheduling, takeoffs, project management)
  • Equipment rental and heavy-equipment dealers
  • Building-materials suppliers
  • Bonding, builder's risk and liability insurance
  • Accounting and job-costing firms
  • Subcontractor and trade recruiting

What keeps owners up at night

  • Cash flow between progress payments
  • Bidding accurately and winning the right jobs
  • Coordinating subs and keeping schedules
  • Labour shortages
When to reach themEarly morning, before site visits, or late afternoon. Winter is planning and bidding season in colder markets, which is a good time to sell software and services.
The angle that worksTalk about margin and schedule risk. "How much did your last job overrun?" opens more doors than "we save you time."
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.
FAQ

Questions about Thornhill contractors leads

How many construction companies in Thornhill, ON are in the database?
262 construction companies in Thornhill, ON, as of October 2026. 262 of them have a phone number and 36 have an email address.
How much does it cost to get these leads?
Every account starts with 25 free credits. Unlocking a contact (phone and email together) costs 1 credit. The Starter plan is $39/month for 2,500 credits — about 1.6¢ a contact — so the whole Thornhill list of 262 costs less than one month of Starter. See pricing.
Can I export the list to a dialer or CRM?
Yes. Unlocked contacts export to CSV, Excel or JSON with phone, email, website, address, category and rating, ready for any dialer or CRM.
Where does the data come from?
From public business listings — the same information contractors publish so customers can find them — cleaned, de-duplicated by phone number and refreshed regularly. Businesses can ask to be removed at any time.

Construction companies in other cities

Toronto, ONMississauga, ONOttawa, ONNorth York, ONBrampton, ONLondon, ONScarborough, ONMarkham, ONAll construction companies →

Other businesses in Thornhill

Law firmsMedical clinicsEverything in Thornhill →

Start calling Thornhill contractors today

25 free credits, no card. Search "construction companies in Thornhill" and unlock your first 25 contacts.

Get these leads freeSee pricing