How to build a cold call list for plumbing companies, step by step

By 67Leads Team · Published 11 Nov 2026 · Updated 11 Nov 2026 (US Central) · 5 min read

To build a cold call list for plumbing companies, decide what you are selling, filter plumbing companies by the signal that matches your offer, sort by how busy they look, and call in blocks with one script. As of 12 Nov 2026, the 67Leads warehouse holds 16,378 sellable plumbing companies, 2,519 of them list no website, and 1,369 name an owner on their own site.

Shortcut: the plumber lead list has live counts by state and city, the cold call script generator writes the script, and the cold call calculator works out how many dials you need.

Step 1: Decide what the call is for

A call list is only as good as its fit with your offer. Pick one before you filter anything:

• A website or SEO service. You want plumbers with no website, a site that does not load, or few reviews.
• A review or reputation service. You want plumbers with a low rating and many reviews, or a high rating and few.
• Software, leads, financing or supplies. You want plumbers that are active and reachable: a phone, recent reviews and an owner you can name.

Write the offer in one sentence. If you cannot, the list will not help you.

Step 2: Set the geography

Plumbers sell locally, so work one metro or one state at a time. These are the states with the most sellable plumbing companies in the warehouse today:

States with 50+ sellable businesses, largest first, live from the 67Leads warehouse.

Your own market may be smaller than any row in that table, and that is fine. Fifty plumbing companies in one metro can keep you calling for a week.

Step 3: Filter by the signal

The no website, dead websites, few reviews and low rated pages apply those filters by trade and city. Counts here are the number of listings that match today and move as the data refreshes.

Step 4: Sort and check

Sort by review count, highest first. Plumber businesses with many reviews are busy; one with none may be closed or a side business. Then spend two minutes per name on the top of the list: open the listing, confirm it is still open, note the rating, and write one line to say on the call.

Confirm trade fit too. A search for plumbers can return plumbing supply stores and bathroom showrooms, which are a different buyer. 67Leads grades every row against the trade and withholds off-trade rows, but a list you build by hand needs that check.

Step 5: Sequence the calls

Plumbers answer the phone all day because emergencies come in all day, but the owner is often under a sink. Early morning before dispatch, and the hour after the last job, are the best windows.

1. Block 90 minutes and call 30 names with the same opener.
2. Leave a 20-second voicemail with your number said twice.
3. Text only if the law allows it where you are and the number is a mobile; read your state's rules first.
4. Log every outcome and try again on a different day and time. Plan three attempts before you drop a name.

The cold call script generator writes an opener, objection replies and a voicemail for the trade you choose. Put your own connect and close rates into the cold call calculator to see how many dials a month you need; do not use anyone else's averages.

What to record on each call

Keep four fields beside every name: when you called, whether a person answered, what they said in a few words, and the next step with its date. Owners who say "call me next month" or "talk to my partner" are leads with a date attached, and a list that remembers the date is worth more than a longer list that does not.

Legal basics

Check the National Do Not Call Registry rules at donotcall.gov and your state's calling rules before you dial, and keep an internal do-not-call list. For email follow-up, the FTC's CAN-SPAM guide applies. This is general information, not legal advice.

How 67Leads fits

67Leads is a search over public business listings and company websites. Search and counts are free with contacts masked, your first 67 leads export free, and after that credits start at $6.70 per 1,000. Our guide to selling to plumbing companies covers the trade in more depth. Open the plumber lead list and the cold call script generator to start.

Questions

How many plumbing companies are there in the US?

No single list is complete. Our own warehouse holds 16,378 sellable plumbing companies as of 12 Nov 2026, which is the count of listings we hold, graded against the trade, not a census of every business.

What should the opener on a plumber cold call say?

Name the business, say one true thing you noticed on its listing, and ask permission for one minute. Generic openers get the same short answer every time.

Is it legal to cold call a plumber business?

Calls to businesses are treated differently from calls to consumers, but state rules, the Do Not Call Registry and your own opt-out list still matter. Check them before you dial; this is not legal advice.

How many plumbing companies should be on one call list?

Enough for one or two weeks of calling, usually 50 to 150 in a single metro. Bigger lists go stale before you reach the end.

No card. Search is free with contacts masked.

Sources

1. https://www.donotcall.gov/
2. https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business