How many plumbing contractors are in WASHINGTON, IA?

4 with a current Iowa license, as of 2026-08-31.

How do I check a Iowa contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the Iowa Workforce Development licensee database.

Plumbing contractors in WASHINGTON, IA

4 listings

Source: Iowa Workforce Development license records. Last verified 2026-08-31.

There are 4 plumbing contractors in WASHINGTON, Iowa with a current state license as of 2026-08-31. The earliest license expiry among them is 2029-06-30; every listing shows its own number and expiry date. All are drawn from the Iowa Workforce Development register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
4-M PLUMBING AND HEATING INC.	C133033	Plumbing/Heating & A/C Contractors	2029-06-30	WASHINGTON	52353	Set up workspace
CARSON PLUMBING AND HEATING SERVICES INC	C138865	Plumbing/Heating & A/C Contractors	2029-06-30	WASHINGTON	52353	Set up workspace
GHSCIENTIFIC LLC	C140215	Plumbing/Heating & A/C Contractors	2029-06-30	WASHINGTON	52353	Set up workspace
HARRIS BOYZ HEATING AND AIR	C130920	Plumbing/Heating & A/C Contractors	2029-06-30	WASHINGTON	52353	Set up workspace

Quick answers

How many plumbing contractors are in WASHINGTON?: 4 with a current Iowa license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the Iowa Workforce Development licensee database.