License tenure
2.9 yrs
IA Plumbing avg: 2.5 yrs
Bond
Not published by the state
Not published by the state
Trust score
20
Based on license status, bond, and profile signals
About this business
For Plumbing work in ALTON, SIOUX County (51003-7544) and nearby Iowa communities, DE GRAAF PLUMBING LLC maintains an active license with Iowa regulators.
Read more
DE GRAAF PLUMBING LLC handles repipes, water heaters, drain cleaning, leak detection, and fixture installs for homes and small commercial sites in ALTON. Typical plumbing work includes sewer line repair, slab leak response, kitchen and bath rough-in, and code-compliant upgrades. State classification on file: 238220 - Plumbing/Heating & A/C Contractors.
Iowa contractor registrations are filed with workforce development records.
DE GRAAF PLUMBING LLC holds IA active license C133875 with records dating to 2023 (3 years on file) Licensing is tracked through Iowa Division of Workforce Development.. Current expiration: 2026-06-30.
Reach DE GRAAF PLUMBING LLC at (712) 756-8923 or pigxing@midlands.net. Confirm the license classification covers every trade on your project.
Market insights
Typical Plumbing license tenure in IA.
How this pro compares
License tenure vs state average
DE GRAAF PLUMBING LLC's license is 0.4 years above average for Plumbing contractors in IA.
License journey
- License issuedJuly 31, 2023
2.9 yrs of operating history on record
- License verifiedMay 29, 2026
License checked 22 days ago
- License expirationJune 30, 2026
Renews within the next year
License details
License #C133875
StatusActive
IssuedJuly 31, 2023
ExpiresJune 30, 2026
BondNot published by the state
CountySIOUX
StateIA
Last verifiedMay 29, 2026
License verified with Iowa Division of Workforce Development · last checked May 29, 2026. Confirm status with the state board before hiring.
Before you hire checklist
Work through these steps before signing — checking items helps you compare contractors with confidence.
Claim this profile
Are you DE GRAAF PLUMBING LLC? Add proprietary content so this page becomes authoritative — not just a public record stub.