california license #419317     

Licensed and Bonded
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Honesty, integrity, and Quality Workmanship

R.A.NIELSEN & SONS is a residential and commercial construction company that has been building extraordinary structures for over three decades. Our quality workmanship has earned us a reputation as one of the county's premiere contractors. We specialize in ground-up construction as well as renovations, additions, tenant improvements, and remodeling. We are experts in wood or steel constructions.

Distinctive Custom Homes

We will build you the home you want.  No surprises or disappointments. If you can dream it, we can build it. We maintain control throughout the design and construction process to ensure that your residence is built to the highest quality standards.

Commercial Projects

We manage all stages of your project. From the pre-design phase of a project through construction and delivery. We form alliances with property owners, architects, structural engineers, and specialized trades people.

R.A. NIELSEN & SONS guarantees:

  • On schedule completion
  • Cost-effective process from beginning to end
  • Final product exceeds expectations
  • Honesty, integrity, and great value
  • Certified by BUILD IT GREEN and Sonoma State University GREEN BUILDING PROFESSIONAL CERTIFICATE PROGRAM and a listed provider with SIERRA CLUB GREEN HOME at: www/sierraclubgreenhome.com
  • Certified Building Analyst Professional w/ Building Performance Institute, Inc.

We specialize in energy efficient construction. 

909 Clark Street
Santa Rosa, CA95404
707-542-2298  fax 542-0666

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