Construction companies · Ontario

Construction companies in Waterloo, ON

364 contractors in Waterloo with phone numbers, 46 with email addresses. Search the list, unlock the ones you want and start calling today.

Get the Waterloo list freeSee a sample
364
businesses
100%
have a phone number
13%
have an email address (46)
—
average Google rating
Sample

A sample of construction companies in Waterloo

Twelve of the 364 contractors on the list. Phone numbers and emails unlock in the app — 1 credit per business, both together.

BusinessCategoryRatingWebsitePhoneEmail
End Grain Cabinetry CoCarpenter; Kitchen Remodeler—Yes(519) •••-••••Available
Fritz Electric IncConstruction Supplies Store—Yes(519) •••-••••Available
ATN Mechanical Systems LtdElectrician; General Contractor; Heating, Ventilating and Air Conditioning Contractor—Yes(519) •••-••••Available
Pro Image PaintingConstruction Supplies Store—Yes(519) •••-••••Available
Quality Air ManagementConstruction Supplies Store—Yes(519) •••-••••Available
J & J Pool SvcConstruction Supplies Store—Yes(519) •••-••••Available
Comfort Air Heating & CoolingConstruction Supplies Store—Yes(519) •••-••••Available
Mantels PlusConstruction Supplies Store—Yes(519) •••-••••Available
Bladerunner Inc.Construction Supplies Store—Yes(519) •••-••••Available
Best Appliance RepairConstruction Supplies Store—Yes(519) •••-••••Available
Grand River GlassworksConstruction Supplies Store—Yes(519) •••-••••Available
Gardy Interiors LtdInterior Designer; Kitchen Remodeler—Yes(519) •••-••••Available

Showing 12 of 364. Data refreshed October 2026.

The market

What Waterloo'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; 364 have no rating yet — prime prospects for review and reputation services.
161 (44%) have no website listed — a ready-made list for web design and SEO offers.
12% link a Facebook or Instagram page from their listing.

Most common listings

  • General Contractor96
  • Construction Supplies Store90
  • Home Improvement Service32
  • Construction24
  • Carpet and Flooring Contractor13
  • Carpenter12

Area codes

  • (519)318
  • (226)37
  • (866)2
  • (306)1
  • (800)1
  • (705)1
Playbook

How to sell to contractors in Waterloo

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 Waterloo contractors leads

How many construction companies in Waterloo, ON are in the database?
364 construction companies in Waterloo, ON, as of October 2026. 364 of them have a phone number and 46 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 Waterloo list of 364 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 Waterloo

Law firmsMedical clinicsEverything in Waterloo →

Start calling Waterloo contractors today

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

Get these leads freeSee pricing