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Licensed Sprinkler Contractors
| Level | Company Name | Address | City | State | Zip | Phone Number |
|---|---|---|---|---|---|---|
| 3 | A-1 Fire Equipment Inc. | 12249 8th Ave S | Seattle | WA | 98168 | 206 241-5909 |
| 3 | A-Professional Fire Systems Co. | 17273 S Steiner Rd | Beavercreek | OR | 97004 | 503 632-4353 |
| 3 | AAA Fire and Safety | 3013 3rd Ave N | Seattle | WA | 98109 | 206 784-2200 |
| 3 | Ace Fire Protection, Inc. | 23220 Maple Valley Black Diamond Rd SE Ste 3D | Maple Valley | WA | 98038 | 425 432-4401 |
| U | Active Construction, Inc. | 11302 Burnham Dr NW | Gig Harbor | WA | 98332 | 253 951-4696 |
| 3 | Advanced Fire Protection | PO Box 1543 | Woodinville | WA | 98072 | 425 483-5657 |
| U | Aero Construction Company | PO Box 295 | Snohomish | WA | 98290 | 360 568-5301 |
| 3 | AFP Systems, Inc. | 19435 SW 129th Ave | Tualatin | OR | 97062 | 503 692-9284 |
| 1 | All-Phase Fire Protection, LLC | 3233 41st Avenue NE | Olympia | WA | 98506 | 360 357-5141 |
| U | Alpha Development Corporation | 10015 19th Ave E | Tacoma | WA | 98445 | 253 536-1988 |
| U | Alpine Development, Inc. | 20415 150th Ave SE | Monroe | WA | 98272 | 425 402-1014 |
| U | American Apex, Inc. | 1901 S Jefferson Ave Suite 109 | Tacoma | WA | 98402 | 253 274-0636 |
| 3 | American Fire Control, Inc. | 28115 NE 151st St | Duvall | WA | 98019 | 425 489-0696 |
| 3 | American Sprinkler Corporation | 2311 153rd Ave SE | Snohomish | WA | 98290 | 360 335-4645 |
| U | AMON-RE | 21519 39TH Ave SE | Bothell | WA | 98021 | 425 486-6724 |
| 2 | Anchor Plumbing & Heating Corp. | PO Box 1478 | Marysville | WA | 98270 | 360 653-6500 |
| U | Anderson Excavation, Inc. | PO Box 608 | Burlington | WA | 98233 | 360 424-0457 |
| 3 | Anderson Magruder Company, Inc. | PO Box 30579 | Seattle | WA | 98103 | 206 784-4600 |
| U | Anthony Construction Co., Inc. | 8110 7th Ave S | Seattle | WA | 98108 | 206 762-3780 |
| 3 | Archer Construction, Inc. | 7855 S 206th St | Kent | WA | 98032 | 253 872-7222 |
| 3 | Assured Fire Protection | 11206 32nd St E | Edgewood | WA | 98372 | 253 863-9548 |
| 1 | Basic Fire & Safety | PO Box 487 | South Prarie | WA | 98385 | 360 897-8582 |
| 3 | Basic Fire Protection, Inc. | 940 NE Lombard St | Portland | OR | 97211 | 503 285-1855 |
| 3 | Bellingham Lock and Safe, Inc. | 1619 N State St | Bellingham | WA | 98225 | 360 734-4940 |
| 3 | Best Fire Protection, Inc. | 725 N 67th | Seattle | WA | 98103 | 206 784-8788 |
| 1 | Biener Plumbing, Inc. | 13117 Canyon Rd E | Puyallup | WA | 98373 | 253 531-9261 |
| U | BLR Development, Inc. | PO Box 12339 | Mill Creek | WA | 98082 | 425 488-5504 |
| U | Bob Pearson Construction, Inc. | 1407 Willow Rd E | Fife | WA | 98424 | 253 922-3399 |
| U | Bob's Backhoe, L.L.C. | PO Box 3424 | Arlington | WA | 98223 | 360 652-1834 |
| 3 | Booth & Burner Corporation | PO Box 3895 | Lacey | WA | 98509 | 800-263-4289 |
| U | Boulevard Excavating, Inc. | 1319 Thornton Ave SW | Pacific | WA | 98047 | 253 863-4880 |
| U | Brinkerhoff & Son Construction | 523 93rd Ave SE | Olympia | WA | 98501 | 360 786-1984 |
| 3 | BURNS Fire Systems, Inc. | PO Box 1110 | Granite Falls | WA | 98252 | 425 388-0124 |
| 3 | Cascade Fire Protection Co. | PO Box 1423 | Pasco | WA | 99301 | 509 547-1126 |
| 3 | Cascade Fire Safety | 1100 W 8th St | Vancouver | WA | 98666 | 360 695-9212 |
| U | Catapult Heavy Construction, Inc. | 14047 State Route 9 | Mount Vernon | WA | 98273 | 360 428-8811 |
| U | Ceccanti Inc. | PO Box 39 | Spanaway | WA | 98387 | 253 537-2990 |
| 3 | Central Pacific Fire Sprinkler Co. | PO Box 676 | Cathlamet | WA | 98612 | 360 849-4331 |
| 3 | Columbia Cascade Fire Sprinklers, Inc. | 13213 ne Kerr Rd Ste 140 | Vancouver | WA | 986872 | 360 891-4891 |
| 3 | Commercial Fire Protection, Inc. | PO Box 128 | Mount Vernon | WA | 98273 | 360 848-9093 |
| U | Continental Dirt Contractors, Inc | 1340 M St SE Ste A | Auburn | WA | 98002 | 253 939-5744 |
| 3 | Cosco Fire Protection | 10910 117th Pl NE | Kirkland | WA | 98033 | 206 827-9654 |
| U | Creative Development Ind. | 3208 50th St Ct NW Suite 205-C | Gig Harbor 98335 | WA | 98335 | 253 858-8322 |
| 3 | Crown Fire Protection, Inc. | PO Box 12113 | Mill Creek | WA | 98082 | 206 481-7669 |
| U | Cunningham Development, Inc | PO Box 2328 | Gig Harbor | WA | 98335 | 253 851-9067 |
| 3 | Custom Sprinkler Corporation | PO Box 1137 | Maple Valley | WA | 98038 | 206 413-9225 |
| 1 | D & D Enterprises | 5 N Pershing St | Wenatchee | WA | 98801 | 509 663-0263 |
| U | D & G Backhoe, Inc. | 7101 S Machias Rd | Snohomish | WA | 98290 | 425 334-3918 |
| 1 | Dalmatian Fire & Safety, Inc. | 10305 139th St Ct E #5 | Puyallup | WA | 98373 | 253 770-5828 |
| U | Darrell's | 23323 108th Ave SE | Kent | WA | 98031 | 253 852-7637 |
| U | Deeny Construction Company, Inc. | 2545 Rainier Ave S | Seattle | WA | 98144 | 206 722-0633 |
| 3 | Delta Fire, Inc. | PO Box 4010 | Tualatin | OR | 97062 | 503 620-1058 |
| U | Dent's Construction, Inc. | 3312 Westside Hwy | Castle Rock | WA | 98611 | 360 274-4961 |
| U | Dirt Work Specialist | 19721 94th Ave E | Graham | WA | 98338 | 253 847-6503 |
| U | Dirtt, Inc. | 7324 197th SE | Snohomish | WA | 98290 | 425 485-8896 |
| 3 | Discount Fire Systems, Inc. | 7402 SE Johnson Crk Blvd | Portland | OR | 97206 | 503 777-5030 |
| U | DJ's Plumbing & Heating | 1710-A N National Ave | Chehalis | WA | 98532 | 360 748-0616 |
| U | DLR Utilities Inc. | PO Box 160 | Arlington | WA | 98223 | 360 435-5061 |
| U | E Kent Halvorson, Inc. | 9840 Willows Rd NE | Redmond | WA | 98052 | 425 885-1983 |
| U | E.L.M. Industries, Inc. | PO Box 622 | Enumclaw | WA | 98022 | 253 606-7917 |
| U | Earthwork Enterprises, Inc. | PO Box 726 | Mukilteo | WA | 98275 | 425 745-4275 |
| U | Earthworks Northwest, Inc | PO Box 535 | Lake Stevens | WA | 98258 | 425 334-0779 |
| U | Eastlake Utilities, Inc. | 20117 142nd Ave NE | Woodinville | WA | 98072 | 425 868-7836 |
| U | Eudaly Brothers | 6920 NE 42nd Ave | Portland | OR | 97218 | 503 288-7469 |
| 1 | Evergreen Fire Protection | 5029 S Yakima | Tacoma | WA | 98408 | 253 476-2868 |
| 3 | F. E. Moran, Inc. Spcl. Haz. Systems | 2265 Carlson Dr | Northbrook | IL | 60062 | 847 291-6302 |
| U | Fife Sand & Gravel | 3120 Freeman Rd E | Fife | WA | 98424 | 253 922-7710 |
| 3 | Fire Chief Equipment Co., Inc. | 13300 SE 30th St | Bellevue | WA | 98005 | 425 641-2127 |
| 3 | Fire Control Company, Inc. | 4008 276th St E | Spanaway | WA | 98387 | 253 847-1416 |
| 3 | Fire Control Sprinkler Systems | PO Box 7204 | Spokane | WA | 99207 | 509 489-1444 |
| 3 | Fire Control, Inc. | 1113 North 6th Avenue | Yakima | WA | 98902 | 509 453-3434 |
| 3 | Fire One, Inc. | 219 SW 41st St | Renton | WA | 98055 | 206 575-0311 |
| 3 | Fire Protection Systems, LLC | 14150 SE 255th | Kent | WA | 98042 | 253 638-1790 |
| 3 | Fire Systems West, Inc. | 219 Frontage Rd N Ste B | Pacific | WA | 98047 | 253 833-1248 |
| 3 | Fireguard Sprinkler Systems of WA | 309 S Cloverdale St D10 | Seattle | WA | 98108 | 206 763-4279 |
| 3 | FireMaster | 505 Puyallup Ave | Tacoma | WA | 98421 | 206 383-3804 |
| 3 | Fireshield Inc. | PO Box 2389 | Gig Harbor | WA | 98335 | 253 853-4256 |
| 3 | Firestop Company | 9384 SW Tigard St | Tigard | OR | 97223 | 503 620-6140 |
| U | Fisher & Sons, Inc. | 625 Fisher Lane | Burlington | WA | 98233 | 360 466-6743 |
| 3 | Fluor Daniel Northwest, Inc | One Enterprise Drive | Aliso Viejo | CA | 92656 | 714 975-2865 |
| 3 | Fox Fire Prevention, Inc. | PO Box 594 | Port Orchard | WA | 98366 | 360 623-2993 |
| 3 | Fuji Industries, Inc. | PO Box 757 | Milton | WA | 98354 | 253 536-3144 |
| U | Gary Merlino Construction Co. | 9125 10th Avenue S | Seattle | WA | 98108 | 206 762-9125 |
| U | Gary's Bulldozing | 5142 Yearley Dr. NE | Olympia | WA | 98516 | 360 456-8804 |
| U | George Schmid & Sons, Inc. | 1411 32nd St | Washougal | WA | 98671 | 360 835-5137 |
| U | Golddiggers | 5130 139th Ave SE | Snohomish | WA | 98290 | 360 568-8702 |
| U | Gott Construction Company | 7403 McPherson Rd | Arlington | WA | 98223 | 360 653-3133 |
| U | Green River Construction, Inc | 6402 S 144th St Suite #1 | Tukwila | WA | 98168 | 206 246-9456 |
| 3 | Grinnell Fire Protection | 1215 Central Ave S Ste 128 | Kent | WA | 98032 | 253 859-5066 |
| 3 | Guardian Sprinkler, Inc. | 10239 NE Marx | Portland | OR | 97220 | 503 256-0586 |
| U | Guttormsen Brothers Construction | 14922 Goodrich Dr | Gig Harbor | WA | 98329 | 253 857-2967 |
| U | H-K Underground, Inc. | 4521 Freeman Rd E | Puyallup | WA | 98371 | 253 922-8444 |
| U | H. P. Construction Services, Inc. | 16410 84th St NE Ste D303 | Lake Stevens | WA | 98258 | 425 508-2822 |
| U | Hale & Long General Contractors, Inc. | PO Box 7038 | East Wenatchee | WA | 98802 | 509 884-6663 |
| 3 | Harbor Mechanical, Inc. | PO Box 1077 | Oak Harbor | WA | 98277 | 360 675-1500 |
| U | Henifin Construction, L.L.C. | 3857 Hannegan Rd | Bellingham | WA | 98226 | 360 733-5411 |
| U | Heritage Construction | 12014 20th St SE | Everett | WA | 98205 | 425 334-7044 |
| 3 | Hi-Tech Systems Inc. | 512 NW Carty Rd | Ridgefield | WA | 98642 | 360 887-7062 |
| U | Hisey Construction, Inc. | 6376 NE Tolo Rd | Bainbridge Island | WA | 98110 | 206 842-7301 |
| U | Hobart Backhoe Service | PO Box 38 | Hobart | WA | 98025 | 425 432-0042 |
| U | Hos Brothers Construction, Inc. | PO Box 1788 | Woodinville | WA | 98072 | 425-481-45569 |
| U | Huston Excavating | SE 1320 Arcadia Rd | Shelton | WA | 98584 | 360 426-0550 |
| 3 | Hydro Tech Fire Protection | PO Box 40 | Brush Prairie | WA | 98606 | 360 256-2816 |
| 3 | Inland Empire Fire Protection, Inc. | PO Box 40155 | Spokane | WA | 99202 | 509 534-1097 |
| 3 | Inland Fire Protection, Inc. | 1100 Ahtanum | Yakima | WA | 98903 | 509 248-4471 |
| 2 | Innovated Fire Sprinkler Systems | 81 New Haven Ln | Port Angeles | WA | 98362 | 360 452-7583 |
| U | Interwest Development NW, Inc. | 1425 22nd Street NW Ste E | Auburn | WA | 98001 | 253 939-9787 |
| U | Island Construction Site & Utilities, Inc. | PO Box 1467 | Oak Harbor | WA | 98277 | 360 679-0957 |
| U | J. W. Trucking & Excavating | 18801 43rd Avenue SE | Bothell | WA | 98012 | 425 483-4698 |
| 3 | JD Plumbing & Fire Protection | PO Box 1770 | Woodinville | WA | 98072 | 425 485-9717 |
| U | JLA Construction, Inc. | 17404 Meridian E | Puyallup | WA | 98375 | 253 531-9571 |
| 3 | JND Fire Sprinkler, Inc. | PO Box 23535 | Eugene | OR | 97402 | 503 686-1964 |
| U | Jody Miller Construction | PO Box 44628 | Tacoma | WA | 98444 | 360 458-7516 |
| 1 | Johnson Fire Protection | 2339 SW Eleven Mile Dr | Gresham | OR | 97080 | 503 666-0513 |
| U | K & E Construction | 1416 Portal Dr | Bellingham | WA | 98226 | 360 734-1610 |
| U | Ken Leingang Excavating, Inc. | 1117 N 27th Ave | Yakima | WA | 98902 | 509 575-5507 |
| 3 | Knight Fire Protection, Inc. | 6436 Mullen Rd SE | Olympia | WA | 98503 | 360 456-2162 |
| U | Kohl Excavating, Inc. | 3330 E Valley Rd | Renton | WA | 98055 | 425 251-8820 |
| U | Krieg Construction, Inc | 70 W Sleeper Rd | Oak Harbor | WA | 98277 | 360 679-4151 |
| 3 | Larsen Fire Protection, Inc. | 16410 S Hiram Ave | Oregon City | OR | 97045 | 503 655-5456 |
| U | Leaman and Associates, Inc. | 1212 13th St SW | Puyallup | WA | 98371 | 253 848-8807 |
| U | Lee Johnson & Sons Construction, Inc. | 2343 W Van Dam Rd | Coupeville | WA | 98239 | 360 678-6009 |
| U | Lloyd Enterprises, Inc. | PO Box 3889 | Federal Way | WA | 98063 | 253 927-0416 |
| 3 | LNW Fire Systems, Inc. | 700 NW Gilman Blvd E103-474 | Issaquah | WA | 89027 | 206 255-5758 |
| U | Mahaffey Enterprises, Inc. | 1213 S Clodfelter Rd | Kennewick | WA | 99338 | 509 627-4593 |
| U | Manke Excavating | 1909 Patterson Rd | Shelton | WA | 98584 | 360 426-0834 |
| U | March Construction | 18901 59th St E | Sumner | WA | 98390 | 253 863-5712 |
| 3 | Martex Sprinkler Installations, Inc. | PO Box 8000 | Sumas | WA | 98295 | 604 309-4090 |
| 3 | Master Fire Control, Inc. | 11995 SE Hwy 212 | Clackamas | WA | 97015 | 503 655-6992 |
| 3 | McKinstry Company | PO Box 24567 | Seattle | WA | 98124 | 206 762-3311 |
| 3 | McLeod Corporation | PO Box 988 | Milton | WA | 98354 | 253 926-1574 |
| 2 | Mentor Company | 5610 Kitsap Way #100 | Bremerton | WA | 98312 | 360 377-6879 |
| 3 | Mercury Sprinkler Co. Inc. | PO Box 82104 | Kenmore | WA | 98028 | 425 489-9609 |
| U | Mid-Mountain Contractors, Inc. | PO Box 577 | Bellevue | WA | 98009 | 425 455-7600 |
| U | Minshull Bros. Construction Inc. | 2214 28th Avenue NW | Olympia | WA | 98502 | 360 352-4637 |
| U | MKM Construction, Inc. | 11925 SE Petrovitsky Rd | Renton | WA | 98058 | 425 255-4141 |
| U | MLS Construction | 13020 48th Ave NE | Marysville | WA | 98270 | 360 653-8606 |
| U | Modern Sewer Corporation | 3816 South Rd | Mukilteo | WA | 98275 | 425 743-2756 |
| 3 | Moore Fire Protection | 18621 SE May Valley Rd | Issaquah | WA | 98027 | 425 271-5598 |
| U | Motley-Motley, Inc. | PO Box 421 | Pullman | WA | 99163 | 509 334-3546 |
| U | Mountain Crest Enterprises, Inc. | PO Box 1800 | Mead | WA | 99021 | |
| U | MRM Construction, Inc. | PO Box 838 | Ellensburg | WA | 98926 | 509 925-6126 |
| 1 | Mt. Rainier Plumbing, Inc. | PO Box 171 | McKenna | WA | 98558 | 360 458-2250 |
| 3 | Nor-Tech Fire Protection | 8161 164th Ave NE | Redmond | WA | 98052 | 425 556-0933 |
| 2 | Norco Fire Protection, Inc. | PO Box 363 | Ravensdale | WA | 98051 | 425 432-7250 |
| 3 | Northstar Fire Protection | 875 Blue Gentian Rd | Eagan | MN | 55121 | 612 456-9111 |
| U | Northwest Cascade, Inc. | PO Box 73399 | Puyallup | WA | 98373 | 253 848-2371 |
| U | Nutter Underground Utilities Co. | 5419 NE 88th St Box G | Vancouver | WA | 98665 | 360 573-2000 |
| 2 | NW Residential Fire Sprinkler | 1625 Ethridge Ave | Olympia | WA | 98506 | 360 754-6475 |
| 3 | Olsen Fire Protection, Inc. | 4302 B Street NW Suite E | Auburn | WA | 98001 | 253 856-1515 |
| U | Olson Brothers Excavating, Inc. | 6622 112th St E | Puyallup | WA | 98373 | 253 770-3844 |
| 3 | Omlid & Swinney Fire Sprinkler Systems, Inc. | 1265 N. 35th Street | Springfield | OR | 97478 | 541 741-1775 |
| U | Ostrander Rock & Construction Co, Inc. | 6150 Ocean Beach Hwy | Longview | WA | 98632 | 360 636-4430 |
| U | Pacific Infrastructures Inc. | 1300 N Miller #C5-153 | Wenatchee | WA | 98801 | 509 884-3533 |
| U | Paragon Construction Company Inc. | PO Box 924 | Blaine | WA | 98231 | 360 647-5100 |
| 1 | Park Plumbing | 473 Canal Drive NE | Ocean Shores | WA | 98569 | 360 289-9003 |
| 3 | Parker Fire Protection Inc. | 30205 SE Kelso Road | Boring | OR | 97009 | 503 663-6278 |
| 3 | Patriot Fire Protection, Inc. | 2707 70th Ave E | Tacoma | WA | 98424 | 253 926-2290 |
| 1 | Peltram Plumbing Inc. | PO Box 4031 | Federal Way | WA | 98063 | 206 952-6787 |
| 3 | Pioneer Fire Protection, Inc. | PO Box 325 | Auburn | WA | 98071 | 253 735-8722 |
| U | Pivetta Brothers Construction, Inc. | PO Box 370 | Sumner | WA | 98390 | 253 862-7890 |
| 3 | Plumbco, Inc. | 229 E Peters St | Wenatchee | WA | 98801 | 509 662-0180 |
| U | Precision Utilities & Excavating Inc. | 6916 Soundview Drive | Gig Harbor | WA | 98335 | 253 752-0008 |
| U | Preston Worth General Contractor | 517 19th | Longview | WA | 98632 | 360 636-4296 |
| 1 | Puget Sound Mechanical, Inc, | 1818 99th St E | Tacoma | WA | 98445 | 253 537-8900 |
| 2 | Queen City Plumbing, Inc. | 7339 NE 175th | Kenmore | WA | 98028 | 425 486-1442 |
| U | R. J. Services, Inc. | 122 S. Brook Ave | Port Angeles | WA | 98362 | 360 457-1420 |
| U | R/S Construction & Excavation, Inc. | PO Box 1242 | Enumclaw | WA | 98022 | 360 228-6215 |
| U | Randy Hoffman Construction, Inc. | 27633 SE 400th Way | Enumclaw | WA | 98022 | 253 939-9797 |
| U | Ray Poland and Sons, Inc. | 525 W Grand Ronde | Kennewick | WA | 99336 | 509 586-2158 |
| U | RCI Construction | 617 Cherry #206 | Sumas | WA | 98295 | 360 988-6101 |
| 3 | Reliance Fire Protection, Inc. | 500 S Lander St | Seattle | WA | 98134 | 206 682-6636 |
| 3 | Ripleys Plumbing, Inc. | 922 S Hatch | Spokane | WA | 99202 | 509 536-2100 |
| 3 | Riverside Fire Protection, Inc. | 6148 NE 184th | Kenmore | WA | 98028 | 425 489-0944 |
| U | RMK Construction, Inc. | PO Box 1283 | Fall City | WA | 98024 | 425 868--0181 |
| U | Robinson Construction Co. | 21360 NW Amberwood Dr | Hillsboro | OR | 97124 | 503 645-8531 |
| 2 | Robinson Plumbing, Inc. | 607 SE Everett Mall Wy Ste 26 | Everett | WA | 98208 | 425 682-0895 |
| U | Robison Construction, Inc. | 1216 140TH Ave Ct. E | Sumner | WA | 98390 | 253 863-5200 |
| 3 | ROCKET | 2509 W 19th St | Port Angeles | WA | 98363 | 360 457-4242 |
| 2 | Roestel's Mechanical, Inc. | PO Box 760 | North Bend | WA | 98045 | 425 888-6300 |
| U | Ron's Earthworks Inc. | 8315 Waller Rd E. | Tacoma | WA | 98443 | 253 537-2206 |
| 1 | Ruiz Mechanical Contracting | 17224 89th Ave Ct E | Puyallup | WA | 98373 | 253 845-4246 |
| 1 | Ryan's Plumbing | 20320 NE Allworth Road | Battle Ground | WA | 98604 | 360 687-4983 |
| U | S & W Utility Contractors, Inc. | 9416 Front Street S | Lakewood | WA | 98499 | 253 584-0660 |
| U | SAJASA Construction, Inc. | PO Box 1488 | Woodinville | WA | 98072 | 425 487-0808 |
| U | Sanders General Construction, L.L.C. | 16541 Redmond Way #340C | Redmond | WA | 98052 | 206 236-0606 |
| U | Santana Trucking & Excavating | 23316 NE Red-Fall City Rd Ste 647 | Redmond | WA | 98053 | 206 868-1111 |
| U | Schwiesow Construction, Inc. | 920 Fair St | Centralia | WA | 98531 | 360 330-2005 |
| U | Schwindt Enterprises, Inc. | PO Box 2283 | Woodinville | WA | 98072 | 360 794-2021 |
| U | Scoccolo Construction, Inc | 2825 S 154th St | Seattle | WA | 98188 | 206 242-0633 |
| U | Scotty's General Construction, Inc. | 20405 SE 344th St | Auburn | WA | 98092 | 253 631-3477 |
| 1 | Seacoast Mechanical | 36731 SE 94th St. | Snoqualmie | WA | 98065 | 425 888-2873 |
| U | SECO, L.L.C | 510 93Rd Ave SE | Olympia | WA | 98501 | 360 753-6880 |
| 1 | Shay's Plumbing | 330 W Hancock Ave | Port Angeles | WA | 98362 | 360 457-4500 |
| 3 | Shilo Automatic Sprinkler, Inc. | 1404 First Street N | Nampa | ID | 83687 | 208 466-0006 |
| U | Sligar Construction Inc | 22757 Gunderson Rd. | Mount Vernon | WA | 98273 | 360 428-6002 |
| 3 | Smith Fire Systems, Inc. | 1106 54th Ave E | Tacoma | WA | 98424 | 253 926-1880 |
| 3 | Snelson Companies, Inc. | 601 W State St | Sedro-Woolley | WA | 98284 | 360 856-6511 |
| 3 | Sound Fire Protection, Inc. | 10756 SE Hwy 212, #11 | Clackamus | OR | 97015 | 503 655-3775 |
| U | Sound Utilities, Inc. | 1405 S Central Ave | Kent | WA | 98032 | 253 859-9000 |
| 3 | Sprinx Fire Protection, Inc. | PMB-42 5114 PT. Fosdick Dr. NW #E | Gig Harbor | WA | 98335 | 2153 265-3293 |
| U | Stremler Gravel, Inc. | PO Box 527 | Lynden | WA | 98264 | 360 354-8585 |
| U | Styren Construction, Inc. | 13632 NE 177th Pl #200 | Woodinville | WA | 98072 | 425 483-4813 |
| 3 | T & L Communications, Inc. | 4817 Columbia View Dr | Vancouver | WA | 98661 | 360 737-9725 |
| U | Tacoma Plumbing & Heating, Inc. | PO Box 44601 | Tacoma | WA | 98444 | 253 531-3444 |
| U | Taggart Construction Inc. | 20225 Broadway Ave | Snohomish | WA | 98296 | 360 668-8702 |
| U | The Johnson Company, Inc. | 19030 Lenton Place #211 | Monroe | WA | 98272 | 360 794-2971 |
| 3 | The Safety Team, Inc. | PO BOX 81246 | Seattle | WA | 98108 | 206 762-1450 |
| U | The Vemo Company | 3500 1st NW | Seattle | WA | 98107 | 206 633-5222 |
| U | Thompson Mechanical Contractors, Inc. | PO Box 2843 | Pasco | WA | 99302 | 509 545-5958 |
| U | Tiger Construction Ltd. | 6280 Everson Goshen Rd | Everson | WA | 98247 | 360 966-7252 |
| 3 | Titan Mechanical, Inc. | 1622 S Seehorn Rd | Spokane | WA | 99212 | 509 533-5431 |
| U | Top Rail Construction | 1901 N 4th St | Yakima | WA | 98901 | 509 574-3889 |
| U | Tri-M Construction & Development | 2203 SW 356th Street | Federal Way | WA | 98023 | 253 927-8213 |
| U | Tri-State Construction, Inc. | PO Box 3686 | Bellvue | WA | 98009 | 425 455-2570 |
| 3 | Triangle Fire Protection, Inc. | PO Box 264 | Woodinville | WA | 98072 | |
| U | Trico Contracting, Inc. | PO Box 409 | Burlington | WA | 98233 | 360 757-2373 |
| U | Trinity Excavation, Inc. | 3171 Thompson Road | Cowiche | WA | 98923 | 509 678-4069 |
| 3 | Trinity Fire Protection, Inc. | 11021 Cramer Rd KPN | Gig Harbor | WA | 98329 | 253 857-5222 |
| U | Udelhoven General, Inc. | 2200 Division Suite B | Bellingham | WA | 98226 | 360 738-1935 |
| 3 | United Sprinkler, Inc. | 172 Hamel Rd. | Hamel | MN | 55340 | |
| 3 | Unlimited Mechanical, Inc | PO Box 6204 | Bellevue | WA | 98008 | 425 286-7889 |
| U | Utility Contractors, Inc. | 11505 NE 4th Plain #F1-316 | Vancouver | WA | 98662 | 360 256-0890 |
| 3 | Vanport Fire Sprinklers, Inc. | 6101 NE 127th Ave Ste 200 | Vancouver | WA | 98682 | 360 256-9838 |
| 3 | Viking Automatic Sprinkler Company | 3434 First Ave S | Seattle | WA | 98134 | 206 622-4656 |
| U | Wagner Development, Inc. | 9020 Chambers Creek Rd W | Tacoma | WA | 98467 | 253 565-9897 |
| 2 | Washington Fire Sprinkler Systems | 4226 108th Ave E | Edgewood | WA | 98372 | 253 841-7665 |
| 3 | Western Automatic Sprinkler Co Inc. | 1403 N Monroe | LaGrande | OR | 97850 | 503 963-0492 |
| 3 | Western States Fire Protection Co. | 7102 180th Ave NE #A-105 | Redmond | WA | 98052 | 206 881-0100 |
| 3 | Wyatt Fire Protection | 9095 SW Burnham | Tigard | OR | 97223 | 503 684-2928 |
