Construction companies · Ontario

Construction companies in London, ON

1,300+ contractors in London with phone numbers, 162 with email addresses. Search the list, unlock the ones you want and start calling today.

Get the London list freeSee a sample
1,300+
businesses
100%
have a phone number
12%
have an email address (162)
—
average Google rating
Sample

A sample of construction companies in London

Twelve of the 1,300+ contractors on the list. Phone numbers and emails unlock in the app — 1 credit per business, both together.

BusinessCategoryRatingWebsitePhoneEmail
Discount Drain Service IncGeneral Contractor; Plumber; Sewer Contractor—Yes(519) •••-••••Available
Verbeek KitchensBathroom Contractor; Carpenter; Kitchen Remodeler—Yes(519) •••-••••Available
Forest City ElectricConstruction Supplies Store—Yes(519) •••-••••Available
Creative FabricationsConstruction Supplies Store—Yes(519) •••-••••Available
Himalaya Roofing & Renovations IncKitchen Remodeler; Roofer—Yes(519) •••-••••Available
Cameron Window & Door IncDoors and Windows Contractor; General Contractor—Yes(519) •••-••••Available
Xtreme Environmental IncGeneral Contractor; Construction Supplies Store—Yes(226) •••-••••Available
Ashworth DrainageConstruction Supplies Store—Yes(519) •••-••••Available
PlumbingWorxConstruction Supplies Store—Yes(519) •••-••••Available
Jerry's Asphalt Paving IncGeneral Contractor—Yes(519) •••-••••Available
Royal Air Conditioning & Heating LtdConstruction Supplies Store—Yes(519) •••-••••Available
McCready Painting & Decorating LtdConstruction Supplies Store—Yes(519) •••-••••Available

Showing 12 of 1,300+. Data refreshed October 2026.

The market

What London'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; 1,300+ have no rating yet — prime prospects for review and reputation services.
635 (46%) have no website listed — a ready-made list for web design and SEO offers.
10% link a Facebook or Instagram page from their listing.

Most common listings

  • General Contractor401
  • Construction Supplies Store362
  • Home Improvement Service96
  • Construction51
  • Carpet and Flooring Contractor47
  • General Contractor; Heating, Ventilating and Air Conditioning Contractor42

Area codes

  • (519)1,100+
  • (226)131
  • (647)8
  • (548)6
  • (289)4
  • (800)3
Playbook

How to sell to contractors in London

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 London contractors leads

How many construction companies in London, ON are in the database?
1,300+ construction companies in London, ON, as of October 2026. 1,300+ of them have a phone number and 162 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 London list of 1,300+ 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, ONScarborough, ONMarkham, ONOakville, ONAll construction companies →

Other businesses in London

HVAC companiesLandscaping companiesCleaning companiesDental clinicsLaw firmsMedical clinicsEverything in London →

Start calling London contractors today

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