Koester Construction Company
general-contractor
Serving Grimes, IA
From Google Business Profile
4.5
25 Google reviews
Hours
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
| Sunday | Closed |
Google categories: General contractor, Construction company
View on Google Maps →Last checked October 3, 2026.
More from Google Business Profile
Listed features
- Accessibility
- Wheelchair accessible entrance
- Wheelchair accessible parking lot
Photos on Google: 36
Recent Google reviews (excerpts)
Written by Google users, not by EdgeLocal. EdgeLocal has not verified them and does not show reviewer names.
1 out of 5 stars · Nov 2025
I saw driver of truck GNY 900 nearly cause an accident by hitting a black sedan then proceeded to scream and stop traffic.
5 out of 5 stars · Dec 2024
Everyone at Koester Construction that I have engaged with has been wonderful. Great people make a great company. I would highly recommend!
5 out of 5 stars · Dec 2024
Best contractor I’ve had to deal With as I am a sub contractor always has a plan and schedule. Awesome team and bright future ahead. Happy to work with them!
The owner replied to 1 of the 8 most recent reviews Google showed.
From Google Business Profile, last checked October 3, 2026.
About this business
Koester Construction is a family-owned commercial General Contractor.
Services
- Retail
- Multi Family/Senior Living
- Restaurant
- Office
- Historical
- Education
- Healthcare
- In business since
- 1985
- Experience
- over 30 years of experience
Elsewhere online: Instagram · Facebook · LinkedIn
Source: the business's own website and its Google Business Profile description, read automatically on October 15, 2026. Not verified by EdgeLocal.
Iowa Contractor Registration
- Reg. #
- C094243
- Expires
- October 26, 2027
Source: Iowa Division of Labor contractor registration data, licensed under CC BY 4.0. Look up this registration
About general contractors in Grimes
General contractors manage construction projects, coordinating subcontractors, permits, schedules and budgets. A general contractor runs a project from plans to final inspection: pricing the job, pulling permits, scheduling framers, electricians, plumbers and finishers, ordering materials, managing the budget and making sure the work passes inspection.
Typical cost: $20,000–$150,000 for typical residential projects. See the full cost guide
Typical U.S. ranges from industry sources (2024–25); not EdgeLocal data. Your quote will vary with scope, materials and location.
Questions to ask this contractor
- Check registration, license and insurance: Ask for proof of registration, liability coverage and workers comp.
- Visit past projects: Ask for addresses or photos of similar completed jobs and references.
- Compare detailed bids: Bids should break out labor, materials, allowances and the GC fee.