How many plumbing contractors are in JOHNSTON, 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 JOHNSTON, IA

4 listings

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

There are 4 plumbing contractors in JOHNSTON, 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
ALL IOWA MECHANICAL	C141266	Plumbing/Heating & A/C Contractors	2029-06-30	JOHNSTON	50131	Set up workspace
KOHLES MECHANICAL INC	C130350	Plumbing/Heating & A/C Contractors	2029-06-30	JOHNSTON	50131	Set up workspace
MILLER SERVICE GROUP LLC DBA AIRE SERV OF NW DES MOINES	C151611	Plumbing/Heating & A/C Contractors	2029-06-30	JOHNSTON	50131	Set up workspace
SCHAAL HEATING & COOLING INC	C130603	Plumbing/Heating & A/C Contractors	2029-06-30	JOHNSTON	50131	Set up workspace

Quick answers

How many plumbing contractors are in JOHNSTON?: 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.