Connelly Tiehen & Sons INC
REGISTEREDCommercial & Institutional Bldg Construction · Dakota Dunes, SD
Connelly Tiehen & Sons INC is currently registered as a construction contractor with the State of Iowa under registration number C090572, last issued or renewed 2026-04-21 and current through 2027-05-24. Iowa registration confirms compliance with state labor law. It is not a license, and the State does not assess skill.
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This contractor is based in SD and holds an Iowa contractor registration, which is required to perform construction work in Iowa.
Connelly Tiehen & Sons INC at a glance
- What they do
- Commercial & Institutional Bldg Construction State record
- Registered in
- Dakota Dunes, SD State record
- Phone
- (309) 292-7615 State record
- Website
- ctsbuilders.com Business website
- Check the registration
- No. C090572, current, verify with the State State record
State registration
- Registration number
- C090572
- Status
- Registered
- Issued / last renewed
- 2026-04-21
- Expires
- 2027-05-24
- Primary trade
- Commercial & Institutional Bldg Construction
- Owner of record
- Bart Connelly
- Issuing authority
- DIAL
Sourced from the Active Iowa Construction Contractor Registrations (Iowa Code ch. 91C), last updated 2026-09-14. Verify this registration with the State of Iowa. How to check a registration yourself.
About Connelly Tiehen & Sons INC
From ctsbuilders.com

- In business since 1996
- Website:
- ctsbuilders.com
- Email on their website:
- nathan@ctsbuilders.com
- Other number on their website:
- (712) 203-1620
Read from the business’s own website (ctsbuilders.com). We have not verified it and this business has not claimed this listing. Is this your business? Claim it free to edit or remove anything here, or request a correction.
What Connelly Tiehen & Sons INC is registered to do
The State classifies Connelly Tiehen & Sons INC as commercial & institutional bldg construction. That classification comes from the registration itself, not from us. It describes the work the business registered to perform, and it is not an assessment of skill or a limit on what they may quote for.
2026-04-21
registration last issued or renewed with the State
1,164
registered commercial & institutional bldg construction in Iowa, this business among them
All 1,164 registered commercial & institutional bldg construction in Iowa →
Sources for this profile
- Registration: Active Iowa Construction Contractor Registrations, last updated 2026-09-14. Verify registration C090572
- About the business: read from its website, ctsbuilders.com/contact. Not written or confirmed by the business.