Re-level and raise sunken concrete for the fraction of the cost of replacement. 1-866-SLABJACK proudly serves greater Seattle, your local cement raising experts. Visit www.1866slabjack.com for more information. Slabjack NW is owned and operated out of Issaquah 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.