SPER Contracting Corp

DBA: Retaining Walls Company

ROC #325766·A General Engineering·Active

✓ License active✓ No disciplinary actions on recordLicensed 6 yrs

Address:: 3447 Adams Street, Carlsbad, CA 92008
Qualifying party:: Thomas Joseph Klein Jr
Issued:: Aug 9, 2019
Expires:: Aug 31, 2027

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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.

Activity dashboard

Aggregated across 7 permits we've linked to this license.

Last 90 days

permits

Last 12 months

permits

12mo total

valuation

Lifetime $

$5.8M

valuation

Typical work: Com (OTH) -- Electrical

Most active zip: 85201

Average job size: $1.9M

Active zips (12mo): —

First permit on record: 2006-09-13

Last permit on record: 2011-05-03

Active in: Mesa

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 SPER Contracting Corp 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 We do not publish reviews, ratings, or unverified contact details — owner-provided updates always carry their source label.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 →

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