378 Trailers Near Seattle, Washington

Steel Trailers Built for the Pacific Northwest

We carry a full lineup of factory-direct steel trailers, each built for a different job. Interstate, Carry-On and Karavan models all sit on a steel structural frame rather than the aluminum frames you will be quoted elsewhere, with.024" aluminum siding standard and.030" available - steel where the load is carried, aluminum where the weather is kept out. That combination matters in a climate like this one. TrailersPlus is the only retail seller of Interstate Trailers; see why Interstate for the construction detail.

Our Spanaway store and certified service center at 20025 Mountain Hwy E, Spanaway, WA 98387 covers the south end of the metro, and our Marysville store covers the north. Here is how the main product lines break down:

Enclosed Cargo Trailers

Built on Interstate’s DuraFrame™ steel framework with Quadra-Sealed™ four-layer roof seams to keep water out, our enclosed cargo trailers work as secure, weather-protected mobile workshops. They are a go-to for electricians, plumbers and finish carpentry crews working across Seattle’s urban core and the surrounding commercial zones. The 6x12 is the fastest-moving size at both stores, and the 5x8 converts better than almost anything else we list.

Dump Trailers

Featuring heavy 10-gauge steel decks and hydraulic scissor lifts, our dump trailers are built for serious loads. Local excavation crews, masonry contractors and roofers use them daily to move saturated clay, asphalt shingles, crushed concrete and demolition debris around King and Pierce counties. Ask about the 7x14 and 7x16, and about the 16K rating - it gets requested by name here more than at most stores. Wet material is heavier than it looks, so size these by weight rather than by how full the body appears.

Utility and Landscape Trailers

Open decks with pressure-treated wood, fold-down mesh ramp gates, radial tires and LED lighting - the everyday workhorse for landscape maintenance crews, property management teams and anyone loading a side-by-side for a trip into the Cascades. This is the single strongest category at our Marysville store, and the 6x10 and 6x12 are what most people come in for. We stock Interstate and Karavan builds side by side; they are genuinely different trailers and worth two minutes of comparison before you choose on price. Browse utility trailers

Car Haulers and Equipment Trailers

A low-profile chassis and heavy-duty Dexter axles with integrated electric braking give these equipment trailers good highway stability. Whether you are moving classic cars, skid steers or mini-excavators along Western Washington’s busy corridors, they track straight and stop confidently. Enclosed car haulers outsell open ones at both stores, and in this climate the roof is most of the reason.

Trailer Financing

A new trailer should not drain your working capital. We offer flexible on-site financing through Sheffield Financial and RockSolid Funding at competitive fixed rates with no early payoff penalties. For newer businesses or buyers protecting a credit line, Rent-to-Own through C3 Rentals requires no hard credit check, allows same-day pickup, and applies a portion of every monthly payment toward full ownership. Learn more about financing

Certified Trailer Service, Repair and Parts

Hauling heavy loads on Pacific Northwest highways puts real wear on running gear. Every new trailer purchase includes two free 40-point safety inspections at 12 and 24 months, performed by factory-trained technicians - bearing checks, brake adjustment, electrical testing, wiring integrity, frame weld inspection, coupler tolerances and tire balancing. We also service trailers we did not sell. Schedule service

Custom-Built Trailers

Not seeing what you need on the lot? Work with our team to specify one to your own dimensions, rating, door configuration and color. Custom orders typically take six to eight weeks and can be collected at either the Spanaway or Marysville store. Start your custom build

Why Buy Here

One of 92 TrailersPlus locations with more than 11,900 trailers across the network, rated 4.8 from over 10,000 reviews across 25+ years. Roughly 95% of the weight of each trailer is sourced in the USA.