The 20 most active Plumbing contractors in Buffalo, NY

Ranked by the number of plumbing permits each contractor pulled in Buffalo, NY since February 2026. This is the raw public record — no editorial fluff, no pay-to-play rankings.

Rank	Contractor	Permits Filed	Status
#1	MICHAEL MARKS	257 permits	✓ Active
#2	T-MARK PLUMBING	97 permits	✓ Active
#3	MICHAEL DOLLENDORF	89 permits	✓ Active
#4	FRANK'S COMMERCIAL AND HOME SE	71 permits	✓ Active
#5	PCS PLUMBING & HEATING	39 permits	✓ Active
#6	TONY CELLINO	38 permits	✓ Active
#7	JON THE PLUMBER, LLC	35 permits	✓ Active
#8	MICHAEL REED	34 permits	✓ Active
#9	DENNIS OSINSKI II	31 permits	✓ Active
#10	DELTA P PLUMBING HEATING AND AIR CONDITIONING, INC	29 permits	✓ Active
#11	WARREN HERDIC	28 permits	✓ Active
#12	ANTHONY HERTEL HARDWARE & PLUMBING	27 permits	✓ Active
#13	GARY FAZIO	24 permits	✓ Active
#14	ZENNER & RITTER	24 permits	✓ Active
#15	ROTO-ROOTER	23 permits	✓ Active
#16	J R SWANSON PLUMBING CO, INC	20 permits	✓ Active
#17	GARY FLANDERS	20 permits	✓ Active
#18	MATTHEW MOSER	19 permits	✓ Active
#19	GREAT LAKES PLUMBING	16 permits	✓ Active
#20	TODD RUSSO	16 permits	✓ Active

See every plumbing permit pulled this week

PermitGrab indexes every plumbing permit in Buffalo, NY the day it's issued — homeowner names, addresses, and contractor info. Used by competing contractors, suppliers, and property owners researching who's reputable.

See Buffalo, NY permits

Why this list matters more than Angi's "Top Pros"

If you're a Buffalo, NY homeowner researching a plumbing contractor, the question is which one will actually do the work — not who paid the most for ad placement. Building permits are the most honest signal you can get:

Every entry pulled a real permit. No self-reporting. No "premium membership" rankings. The city issued these.
Permit count is a proxy for trust. Inspectors don't keep approving a contractor's work if the work is bad — they fail it. Repeat permit-pullers have repeatedly passed inspection.
Building-permit data is public record. It can't be gamed by review-buying or pay-to-rank algorithms.

Above is the raw ranking. If you want to see what each contractor is actually working on right now — addresses, permit types, when they pulled the permit — every plumbing permit is on the Buffalo, NY permit feed.

For plumbing contractors: how to land on this list

If you run a plumbing business in Buffalo, NY and don't see your company name here, it usually means one of two things:

You haven't pulled a permit in the last 180 days under your registered business name.
Your permits are filed under a homeowner's or licensee-individual's name rather than your business — which happens a lot in jurisdictions like Buffalo, NY where the city permit system captures the licensee, not the firm.

Both are fixable. PermitGrab is built for the contractors on this list — daily permit alerts in your zip codes, owner phones where available, and a flat $149/mo with no annual contract. See how PermitGrab works for plumbing contractors in Buffalo, NY →

Frequently asked

How is this ranking calculated?

We count every plumbing building permit filed in Buffalo, NY over the last 180 days, group by contractor business name, and sort descending. No editorial weighting, no paid placements. The raw count is the rank.

Where does the permit data come from?

Buffalo, NY's official permit portal. PermitGrab pulls daily — most permits show up within 24-48 hours of issuance. The full underlying records are visible on the Buffalo, NY permit feed.

Is this better than Yelp or Angi reviews?

For one question — "is this contractor real and currently doing work?" — yes, by a wide margin. Reviews are great for catching catastrophic bad actors but can be gamed; permits are official-record proof of activity. Use both.

Why is contractor X not on this list?

Either they haven't pulled a permit in the last 180 days under their business name, or their permits filed under a licensee-individual's name instead. Both are common. The full search interface is on the Buffalo, NY permit page.

I'm a plumbing contractor — how do I use this?

See who's pulling the most permits in your service area, watch what work they're doing, and use the daily permit feed to spot new jobs in your zip codes the day they're filed. PermitGrab is $149/month for the full Buffalo, NY permit feed plus 770+ other US cities.