Sioux Falls Tower Specialists, Inc.

DBA: VIKOR

ROC #337788·A General Engineering·Active

License status per AZ ROC roster as of Jul 26, 2026 — verify current status at azroc.gov

✓ License active✓ No disciplinary actions on recordLicensed 4 yrs

Address:: 4300 N. Northview Ave., Sioux Falls, SD 57107
Qualifying party:: Sign in to view
Issued:: Apr 26, 2022
Expires:: Apr 30, 2028 — Expiry Apr 30, 2028 per AZ ROC roster as of Jul 26, 2026 — verify at azroc.gov

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Compliance & activity profile

✓ Clear

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

Composite of public AZ ROC license status + disciplinary record + permit-activity velocity.

Momentum & expansion

🗺 New territory · 85086, 85756🔧 New trade · Alteration, Remodel, Repair, Cell Tower Building Permit

Derived from this contractor's permit history — last 90 days vs prior. A live "worth calling now" read.

Contact from permit filings

(605) 331-6972dvoelsch@vikor.com

Self-reported by the contractor on their own permit filings across 4 Arizona cities. Verify before outreach.

Activity dashboard

Aggregated across 32 permits we've linked to this license.

Last 90 days: 2; permits
Last 12 months: 2; permits
12mo total: $29K; valuation
Lifetime $: $599K; valuation

Typical work: PRIVATE

Most active zip: 85009

Average job size: $19K

Active zips (12mo): 2

First permit on record: 2023-11-01

Last permit on record: 2026-09-11

Active in: Maricopa County · Mesa · Phoenix · Tucson

Permits by month · trailing 12

Where they pull permits · last 12 months

Maricopa County

50%

Tucson

50%

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 Sioux Falls Tower Specialists, 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 We do not publish reviews, ratings, or unverified contact details — owner-provided updates always carry their source label.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 →

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