Shoring and Underpinning

Condon-Johnson & Associates, Inc.

Condon-Johnson & Associates is a leading West Coast geotechnical construction contractor. The company is headquartered in Oakland, CA, with regional offices in San Diego, Los Angles, Portland, and Seattle. Specialty services provided include deep foundations, ground improvement, anchored earth retention, deep excavation shoring and general design build geotechnical construction. AGC member since 2016.
Phone: (425) 988-2150
Fax: (425) 988-2151
Mailing Address
9012 S 208th St.
Kent, WA  98031

DBM Contractors, Inc.

65 year design/build specialty geotechnical contractor with design and construction capabilities in earth retention systems, drilled foundation support, slope stabilization, ground improvement, and dewatering. Specializing in anchored soldier pile, soil nail and secant pile walls, drilled shafts, micropiles, permanent soil and rock anchors, architectural shotcrete, stone columns, well points and deep wells. AGC member since 2010.
Phone: (253) 838-1402
Fax: (253) 874-6574
1220 S 356th St.
Federal Way, WA  98003

McDowell Northwest, Inc.

Serving NW builders with the best people and equipment since 1946 with foundation piling - Augercast, Pipe, Wood, H-pile, Pin-pile; shoring and Soldier pile, Sheet pile, Driven H pile. Low cost - Safe - Dependable. AGC member since 1990.
Phone: (425) 251-8570
18901 E Valley Hwy. S
Kent, WA  98032
18905 - 84th Ave. S
Kent, WA  98032
Phone: (425) 251-8535

Nutter Corporation

Excavating, road construction, underground utilities. AGC member since 1997.
Phone: (360) 573-2000
Fax: (360) 576-8484
7211 NE 43rd Ave.
Vancouver, WA  98661