Contractors in Rock Valley, Iowa
24 construction contractors registered with the State of Iowa in Rock Valley. This is the complete registry — not a paid list.
By trade in Rock Valley
All registered contractors in Rock Valley
- Outdoor Elements INC
Rock Valley, IA · Sioux County
All Other Specialty Trade Contractors
On the State’s register since 2025
REGISTEREDCall - A & K Electric INC
Rock Valley, IA · Sioux County
Electrical and Wiring Installation
On the State’s register since 2026
REGISTEREDCall - Aardema Bros LLC
Rock Valley, IA · Sioux County
Residential Remodelers
On the State’s register since 2026
REGISTEREDCall - Cooperative Farmers Elevator
Rock Valley, IA · Sioux County
All Other Specialty Trade Contractors
On the State’s register since 2026
REGISTEREDCall - De Roon Construction INC
Rock Valley, IA · Sioux County
Poured Concrete Foundation Contractors
On the State’s register since 2026
REGISTEREDCall - Dowdey Construction LLC
Rock Valley, IA · Sioux County
Residential Remodelers
On the State’s register since 2026
REGISTEREDCall - Dual Contracting LLC
Rock Valley, IA · Sioux County
Residential Remodelers
On the State’s register since 2026
REGISTEREDCall - Gator Brothers Boring INC
Rock Valley, IA · Sioux County
Other/Undefined
On the State’s register since 2025
REGISTEREDCall - Glass Doctor
Rock Valley, IA · Sioux County
All Other Specialty Trade Contractors
On the State’s register since 2026
REGISTEREDCall - Jose Us Henriquez LLC
Rock Valley, IA · Sioux County
Roofing Contractors
On the State’s register since 2025
REGISTEREDCall - REGISTEREDCall
- Northwest Excavating INC
Rock Valley, IA · Sioux County
Site Preparation Contractors
On the State’s register since 2026
REGISTEREDCall - Rock Electric INC
Rock Valley, IA · Sioux County
Electrical and Wiring Installation
On the State’s register since 2026
REGISTEREDCall - Rock Valley Plumbing INC
Rock Valley, IA · Sioux County
Plumbing/Heating & A/C Contractors
On the State’s register since 2026
REGISTEREDCall - Sandbulte Construction INC
Rock Valley, IA · Iowa County
Commercial & Institutional Bldg Construction
On the State’s register since 2026
REGISTEREDCall - Sioux Valley Construction
Rock Valley, IA · Sioux County
Commercial & Institutional Bldg Construction
On the State’s register since 2026
REGISTEREDCall - Siouxland Construction INC
Rock Valley, IA · Sioux County
Finish Carpentry Contractors
On the State’s register since 2026
REGISTEREDCall - Vande Hoef Construction INC
Rock Valley, IA · Sioux County
Finish Carpentry Contractors
On the State’s register since 2026
REGISTEREDCall - Vander Zwaag Home Improvements
Rock Valley, IA · Sioux County
Residential Remodelers
On the State’s register since 2025
REGISTEREDCall - Vg Construction & Stone
Rock Valley, IA · Sioux County
New Single-Family Housing Construction
On the State’s register since 2026
REGISTEREDCall - REGISTEREDCall
- West Rock Construction INC
Rock Valley, IA · Sioux County
Other Foundation/Structure &Bldg Exterior
On the State’s register since 2026
REGISTEREDCall
How to choose the best contractor in Rock Valley
Iowa does not rate or rank contractors, and neither do we — the 24 registered contractors listed on this page (current as of September 2026) are the complete State registry for Rock Valley, shown without any quality ranking. “Best” is not a list you can look up; it is the contractor who is right for your job. Here is the method the pros’ own trade associations recommend for finding them:
- 1. Start from the complete list, not an ad. Every business above holds a current State registration — a legitimacy baseline the incumbents’ pay-to-play lists cannot promise. Shortlist three or four whose location and trade fit your project.
- 2. Confirm the registration is active. Check each one on the Iowa Department of Inspections, Appeals, and Licensing’s official portal (verify a registration ↗). Every profile here links to the State’s own record so you can check it in one click.
- 3. Get current proof of insurance. Ask for a certificate of general liability and workers’ compensation. Never let uninsured work start on your property.
- 4. Get at least three written, itemized bids. Compare the same scope apples-to-apples. Be wary of a bid far below the rest — it usually hides missing scope or “surprise” costs later.
- 5. Check references and recent local work, then put the full scope, price, milestone payment schedule, and warranty in a written contract before anyone starts.
The full guide: finding the best contractor in Iowa →Questions to ask before you hire →How to verify a registration →
Frequently asked questions
Who are the best registered contractors in Rock Valley, Iowa?
Iowa does not rate or rank contractors, so there is no official "best registered contractors" list — any site claiming one is guessing. Instead, this directory shows the complete field: all 24 registered contractors the State lists in Rock Valley, Iowa, unranked, so you can compare them yourself. To find the best one for your project, confirm each contractor's registration is active, ask for current proof of liability insurance and workers' compensation (and, for a licensed trade, a current State trade license), and get at least three written itemized bids before you hire.
How many registered contractors are there in Rock Valley, Iowa?
As of September 2026, the State of Iowa lists 24 registered contractors in Rock Valley, Iowa. This directory shows all of them — it is the complete public registry, with no paid placement affecting who is listed.
Is a registered contractor the same as a licensed contractor?
No. Iowa requires most construction contractors to register with the State (Iowa Code ch. 91C), but registration is not a license, an endorsement, or a guarantee of quality, insurance, or bonding. It confirms only that the business filed a current registration with the State.
How do I verify a contractor's Iowa registration?
Look up the registration number on the Iowa Department of Inspections, Appeals, and Licensing's official portal (https://laborportal.iwd.iowa.gov/iwd_portal/). Every profile in this directory links to the State's own record so you can confirm it independently — see the step-by-step guide at https://contractiowa.com/verify.
Are these contractors insured or bonded?
Registration does not verify insurance or bonding. Always ask a contractor for current proof of liability insurance and workers' compensation, and get at least three written bids, before you hire.
Where does this data come from and how current is it?
It comes directly from the Iowa Department of Inspections, Appeals, and Licensing's public "Active Iowa Construction Contractor Registrations" record, last exported September 2026. You can read how this directory is built and download the underlying dataset.
Data, sources & method →Verify a registration with the State ↗