About Us

1-866-SLABJACK is a locally owned concrete and slabjacking contractor in the Seattle area, raising and fixing unlevel and cracked concrete areas including sidewalks, driveways, parking lots, porches, garages, pool decks, patios, basements and more.  We are environmentally minded, driven by excellent work and customer service, and have decades of expertise in our field.  Serving the Puget Sound from Tacoma to Everett, Lynnwood to Redmond, Puyallup to Bellevue and beyond. 

Company History

1-866-SLABJACK is owned and operated out of Lynnwood, Washington by William J. Freeburg and his son David J. Freeburg. William is the Chief Estimator and oversees all of the field operations. He brings extensive construction experience to the company from many years of construction management with commercial contractors such as Bayley Construction and Maintco, Inc. David is the managing partner and directs all of the operations. He also provides a significant wealth of knowledge both in construction and in management having worked for commercial contractors such as McKinstry Co. and Bayley Construction after receiving his Bachelor of Science in Construction Management from the University of Washington.


We only employ individuals seeking to attain growth in their overall knowledge and abilities while taking pride in every aspect of their job. From the first email or phone conversation to the completion of our work on site, as a team we aim to meet or exceed your expectations.

October 2019 Brand Update

As the pioneer of slabjacking in the Puget Sound, 1-866-SLABJACK is always looking for ways to improve the overall experience for our customers. In fall of 2018 we began the transition to providing all polyurethane concrete lifting. This was a consideration that’s been underway for years as poly foam is a far better material than traditional mud which has been used in this industry for nearly a century. It’s more effective at filling and compacting the failed sub-grade beneath the existing concrete. It’s significantly lighter in weight than the mud and it’s notably cleaner and more cosmetically appealing at the conclusion of each project. The reason for considerable lead time in the process of transitioning away from the traditional mud material was the real cost associated with the polyurethane. We’ve spent the past several years testing and proving the viability of both the material and equipment associated with polyurethane concrete lifting. By last fall, we had finally found the combination of material(s) and equipment allowing us to be efficient enough to provide the same dependable service without increasing the costs to our customers. The update in our brand represents this milestone moment in our pursuit to constantly look for opportunities to provide the most cost effective alternative to replacing concrete.

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Slabjack NW LLC BBB Business Review
Slabjack NW LLC BBB Business Review