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Design Build by Onewattconstruction LLC
In our design-build process the project team is organized under one entity. This creates a cohesive atmosphere for design, engineering, costing, and construction; enabling all parties to strive for quality, on-budget, on-time results. Design-build projects also enjoy the ease of having only one contact for the owner throughout the design and construction process.

For designing and building ultra energy efficient buildings, the benefits of design-build become even more apparent. We require high attention to detail of the thermal envelope, mechanical, electrical, all energy systems, not seen in typical construction. By now, we have well trained sub contractors in our area.

Onewattconstruction LLC is a partnership between Allen Drewes, an experienced builder of St. Charles IL and Marko Spiegel, founder of CTI.

Contact us for your next building project. Especially if you are interested in lowering your energy demand.