Diefenderfer Plumbing Inc

DBA: Diefenderfer Plumbing Co

ROC #139842·CR-37 Plumbing·Active

✓ License active✓ No disciplinary actions on recordLicensed 27 yrs

Address:: 2559 S. Brighton, Mesa, AZ 85209
Qualifying party:: Ralph Allen DIEFENDERFER
Issued:: Nov 2, 1998
Expires:: Nov 30, 2026

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Underwriting risk

Low risk

No adverse license or disciplinary signals on the public AZ ROC record.

Composite of public AZ ROC license status + disciplinary record + permit-activity velocity. For underwriting/vetting context — see insurance use.

Contact from permit filings

(602) 565-9308ralph_dief@msn.com

Self-reported by the contractor on their own permit filings across 2 Arizona cities. Verify before outreach.

Activity dashboard

Aggregated across 4 permits we've linked to this license.

Last 90 days

permits

Last 12 months

permits

12mo total

valuation

Lifetime $

$500

valuation

Typical work: MINIMUM (PLUMBING)

Most active zip: 85209

Average job size: $250

Active zips (12mo): —

First permit on record: 2009-01-13

Last permit on record: 2022-06-14

Active in: Mesa · Scottsdale

Lately

Job values are as reported on the permit application; ~ values are labeled estimates from typical values for the permit type, never dressed up as filed figures.

About this record

This page is a public summary of Diefenderfer Plumbing Inc built entirely from government records — the Arizona Registrar of Contractors license file and building permits issued by jurisdictions across Arizona. PlumbIntel joins those sources so you can see, in one place, that a contractor is properly licensed and actively pulling permits under that license.

Everything here is factual and sourced: license status and dates come from the AZ ROC; permit counts, addresses, and values come from the issuing jurisdiction. We do not publish reviews, ratings, or unverified contact details — owner-provided updates always carry their source label. If you're a homeowner vetting a contractor, a lapsed license or a gap in permit history is worth a conversation before you sign.

SOURCE: AZ ROC LICENSE FILESOURCE: CITY & COUNTY PERMITSHow the data is built →Own this page? Claim it →

Related contractorsCR-37 · Mesa

See Diefenderfer Plumbing Inc's full permit history, sub-network, and estimated annualized material spend — plus get alerts when they pull a new permit.