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Building & Remodeling
General Contractor
Serving All of Central Iowa &
the Des Moines Metro

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About Us

Ryan Koster (Owner)-  I started this company to serve the greater Des  Moines area as a premiere Residential Building Company. My vision is simple, I want to provide the highest quality product and service that my clients deserve. We treat every project as if it's our own home. I have learned that great service begins and ends with experienced and friendly professionals. I believe that my team and our subcontractors can provide the best in the business, and have complete and total confidence in every person working on my job sites. Platinum Design Build, LLC. finishes each project on schedule and with the highest level of quality. With a focus on personalized service, competitive rates and customer satisfaction, we’re always striving to meet and exceed expectations. My goal is to provide you with an experience that puts your budget and vision in the forefront and be a true Design + Build company. I will work with you one-on-one to design your project inside and out, then take the project all the way to completion with the build process.

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Barndominiums/ Pole Barns

Thinking of Building a Pole Barn for a House? Talk to us about this trendy style of home construction and what it entails. Have us design and build your Bardominum, Shouse, Pole Barn Home!! We also build outbuildings/ pole barns from ground up. More Details Click HERE


Custom Homes

We are a Design Build Firm ready to get you started on your Dream of Building a Custom Home! More Details Click HERE


Home Remodeling

Home Additions, multi-room remodels, garage additions, or Light Commercial Remodel/ Tenant Improvements. More Details Click HERE


Design service

Blueprint design service- One of the most important first steps of any major project is a design and blueprint layout. 2d and 3d model renderings can help my clients understand their visions before they  become a reality. I proud to be able to offer this service to my clients as a true Design + Build contractor. Ask me about how you can get your blueprint fees for free! 

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Get in Touch

Questions, comments or requests? Feel free to reach out, we’d love to hear from you.


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