Members by Company


Hainline provinces consulting services to the construction industry. Our specialties are construction management, scheduling, project delivery advisement, forensic analysis of schedule and cost, constructability review, and extension of staff. AGC member since 2019.

Phone: (206) 382-9263
Mailing Address
1215 Fouth Ave., Ste. 1200
Seattle, WA  98161

Hamilton Construction Co.

Hamilton Construction Co. as a small firm installing concrete road and irrigation systems in 1939. A heavy civil construction company, Hamilton has an emphasis on transportation projects and is experienced building with limited and difficult project access and comfortable working in high-traffic urban zones, populated recreational areas, sensitive natural habitats, short work windows, and remote project locations. We are hands-on builders and self-perform much of the work we’re contracted for. AGC WA member since 2016.
Phone: (541) 746-2426
Fax: (541) 746-7635
Street Address
1850 - 93rd Ave. SW
Olympia, WA  98512
Mailing Address
P.O. Box 659
Springfield, OR  97477

Harbor Pacific Contractors, Inc.

Water and wastewater treatment plants, municipal, industrial, and commercial construction. AGC member since 1990.
Phone: (425) 488-7131
Fax: (425) 489-3991
19628 -144th Ave. NE, Ste. A
Woodinville, WA  98072

Harper Hayes PLLC

Law firm. AGC member since 2012.
Phone: (206) 340-8010
Fax: (206) 260-2852
600 University St., Ste. 2420
Seattle, WA  98101

Harris Pacific Northwest, LLC

Mechanical contractor. AGC member since 2000.
Phone: (360) 734-3600
Fax: (360) 733-2849
3436 Airport Dr.
Bellingham, WA  98226

Harris Rebar Seattle, Inc.

Supplier of concrete reinforcing steel and welded wire fabric. AGC member since 1989.
Phone: (253) 847-5001
Toll Free: (888) 607-3227
Fax: (253) 847-5004
4421 - 192nd St. E
Tacoma, WA  98446

Hartford, The

Surety bonds. AGC member since 2015.
Phone: (206) 346-0133
Fax: (206) 643-6214
520 Pike St., Ste. 900
Seattle, WA  98101

Haskell Corporation

Heavy industrial/commercial, process/manufacturing construction; steel/pipe fabrication-ASME-Direct Hire capabilities in all disciplines. AGC member since 1991.
Phone: (360) 734-1200
Fax: (360) 734-5538
Street Address
1001 Meador Ave.
Bellingham, WA  98229
Mailing Address
P.O. Box 917
Bellingham, WA  98227

Hawk Mechanical Contractors, Inc.

Mechanical contracting - commercial/public works/industrial. AGC member since 2009.
Phone: (360) 794-8783
Fax: (360) 805-9321
Street Address
17220 W. Main St.
Monroe, WA  98272
Mailing Address
P.O. Box 547
Monroe, WA  98272

Hayward Baker Inc.

Our experience in design and construction of geotechnical construction services spans more than six decades. The Hayward Baker suite of techniques, equipment, and experience is comprehensive and is packaged to create the most effective and economical solution. AGC member since 2017.
Phone: (206) 223-1732
Fax: (206) 223-1733
Mailing Address
11180 E Marginal Way S
Tukwila, WA  98168

Hcon Inc

Site development and underground utilities. AGC member since 2019. VSOB


Phone: (253) 576-9984
Street Address
4624 River Rd. E
Tacoma, WA  98443
Mailing Address
P.O. Box 731005
Puyallup, WA  98373


We help our clients better manage their business' payroll, human resources, hiring (including filing for WOTC), time & attendance, and much more, through our integrated, customizable, online suite of services. Whether you're looking for an easier, more cost effective way to pay employees, streamline your hiring process, claim your WOTC credits, or protect your company from employee related risk, Heartland's Payroll/HR services can give you the support you need. In addition, through our partnership with the nation's largest business loan marketplace, Lendio, we can provide you with unprecedented access to business capital. AGC member since 2019.
Phone: (360) 809-3486
Nick Wells
District Manager

Hemphill Brothers, Inc.

Limestone extracting and wholeselling, silica sand extracting and selling. AGC member since 2005.
Phone: (206) 842-0748
Fax: (206) 238-5027
Street Address
375 Erickson Ave. NE, Ste. 222
Bainbridge Island, WA  98110
Mailing Address
P.O. Box 10190
Bainbridge Island, WA  98110

Henderson Partners, LLC

Excavation and utilities, framing and concrete, septic and sewers. AGC member since 2006.
Phone: (253) 851-5896
Fax: (253) 851-5826
11302 Burnham Dr. NW
Gig Harbor, WA  98332

Hensel Phelps

Hensel Phelps provides development, commercial building and ongoing operations and maintenance services for clients across the country. AGC member since 2016.
Phone: (425) 646-2660
15375 SE 30th Pl., Ste. 110
Bellevue, WA  98007

Hentschell & Associates, Inc.

Construction insurance and bonding. AGC member since 1991.
Phone: (253) 272-1151
Fax: (253) 272-1225
1436 S Union Ave.
Tacoma, WA  98405

Heritage Bank

Financial institution. AGC member since 2011.
Phone: (360) 943-1500
Fax: (360) 570-7343
201 - 5th Ave. SW
Olympia, WA  98501

Hermanson Company, LLP

Hermanson Company is a full service commercial mechanical contractor, engineering and service/maintenance provider with offices in the Puget Sound Region and Western Oregon. The company specializes in critical environments, commercial office & residential development, public works, and tenant improvement / retrofit. AGC member since 2019.
Phone: (206) 575-9700
Fax: (206) 575-9800
Mailing Address
1221 - 2nd Ave. N
Kent, WA  98032

Herzog Industries, LLC dba Herzog Glass

Everything in glass and metal. AGC member since 2017.
Phone: (206) 322-8444
Fax: (206) 322-9202
Mailing Address
4344 S 104th Pl.
Seattle, WA  98178

Highwood Global LP

Phone: (509) 655-7711
Mailing Address
2425 E Magnesium Rd.
Spokane, WA  99217

HOC Contractors

Full-service general contractor. AGC member since 2018.
Phone: (253) 720-8768
Fax: (206) 260-8826
Street Address
3213 "C" St. NE
Auburn, WA  98002
Mailing Address
1245 Auburn Way N, Ste. 131
Auburn, WA  98002

Hodge Construction

Commercial, industrial, tenant improvements, and retail. AGC member since 2002.
Phone: (425) 222-5011
Fax: (425) 222-5019
Street Address
30414 SE 40th St.
Fall City, WA  98024
Mailing Address
P.O. Box 1105
Fall City, WA  98024

Holaday Parks, INC.

Full mechanical contractor. AGC member since 2019.
Phone: (206) 248-9700
Fax: (206) 248-8700
Mailing Address
4600 S. 134th Pl.
Tukwila, WA  98168

Holmberg Mechanical

Mechanical contractor, plumbing systems. AGC member since 1984.
Phone: (425) 822-2233
Fax: (425) 827-5735
15400 SE 30th Pl, Ste. 100
Bellevue, WA  98007

Holmes Mechanical Inc.

Industrial mechanical contractor. AGC member since 2016.
Phone: (360) 698-1977
Fax: (360) 698-1843
Mailing Address
5210 Sinclair Way
Bremerton, WA  98312

Holroyd Co., Inc.

Ready-mix concrete supplier, sand/gravel producer. AGC member since 1960.
Phone: (253) 474-0725
Fax: (253) 474-3140
Street Address
7216 Lakewood Dr. W
Lakewood, WA  98499
Mailing Address
P.O. Box 39009
Tacoma, WA  98496

Hos Bros Construction, Inc.

Trucking, site development, excavation/trenching, utilities. AGC member since 2008.
Phone: (425) 481-5569
Fax: (425) 485-6634
Street Address
7733 W. Bostian Rd.
Woodinville, WA  98072
Mailing Address
P.O. Box 1788
Woodinville, WA  98072

Howard S. Wright, a Balfour Beatty company

Commercial, general contracting, construction management, design/build, special projects, and service. AGC member since 1934.
Phone: (206) 447-7686
Fax: (206) 447-7688
Street Address
415 - 1st Ave. N, Ste. 400
Seattle, WA  98109
Mailing Address
P.O. Box 34449
Seattle, WA  98124
425 NW 10th Ave., Ste. 200-A
Portland, OR  97209
Phone: (503) 546-6180

HUB International Northwest, LLC

Surety bonds, insurance and employee benefits for the construction industry. AGC member since 2000.
Phone: (425) 489-4500
Fax: (425) 489-4501
Street Address
12100 NE 195th St., Ste. 200
Bothell, WA  98011
Mailing Address
P.O. Box 3018
Bothell, WA  98041

Huber Brothers LLC

Rebar fabrication and installation. AGC member since 2019.
Phone: (509) 457-1555
Fax: (509) 452-6265
Mailing Address
411 Keys Road
Yakima, WA  98901

Hudson Bay Insulation Co.

Insulation of mechanical piping, ductwork, equipment, acoustical insulation, and fire stopping. Distributor of pre-insulated pipe supports. AGC member since 1988.
Phone: (206) 763-9484
Fax: (206) 763-7922
Street Address
210 S Hudson St., Ste. 375
Seattle, WA  98134
Mailing Address
P.O. Box 80424
Seattle, WA  98108
Luke Buoy
Spokane Office
Michael Clarno
Portland Office
Greg Zevely
Seattle Office
12225 NE Marx St.
Portland, OR  97230
Phone: (503) 688-1496
11616 E Montgomery
Spokane Valley, WA  99206
Phone: (509) 891-7110

Hughes Group LLC

The Hughes Group LLC provides professional services and installation support and specializes in logistics, custodial services, supplies, informational management systems and aircraft/airfield support operations. Additionally, Hughes groups provides traffic control services, striping and seal coating services as well as utility adjustment. AGC member since 2018.

Phone: (253) 588-2626
Fax: (253) 592-6127
Mailing Address
3701 S Lawrence Street
Tacoma, WA  98409

Hurst Construction LLC

Heavy non-building construction. AGC member since 2011.
Phone: (509) 664-0173
Fax: (509) 664-0175
Street Address
1737 N. Wenatchee Ave.
Wenatchee, WA  98801
Mailing Address
P.O. Box 990
Wenatchee, WA  98807

HWA GeoSciences

Located in Bothell, Washington, HWA GeoSciences Inc. is a minority and women owned enterprise that provides a full range of geotechnical and geoscience solutions to public agencies and engineering / architecture firms. Our services include design and construction of bridges, buildings, parks, solid waste, transportation, waterfront, water, wastewater, and storm water facilities. Since 1978, HWA's engineers, geologists, environmental scientists, construction inspectors, and laboratory technicians have been helping to create a better, safer, more sustainable built environment in the Pacific Northwest and abroad. In addition to our engineering and science services, we operate a state-of-the-art materials testing laboratory, accredited by the American Association for Laboratory Accreditation (A2LA) and the American Association of State Highway and Transportation Officials (AASHTO) R18. AGC member since 2018.

Phone: (425) 774-0106
Mailing Address
21312 - 30th Dr. SE, Ste. 110
Bothell, WA  98021