Snohomish County · Washington
Metal buildings in Arlington, WA.
We supply detached garages, shops, storage buildings and more across Arlington. Our work reaches from the neighborhoods near Old Town to the larger lots on the edges of the city, and anywhere else you’re building.
Accessory rear setback
5 ft
Distance from the house
8 ft
Max lot coverage
None
Height, low-density zones
35 ft
From Arlington Municipal Code Chapter 20.48, revised July 2026, and the city’s building permit exemptions guide.
What people build in Arlington
The Snohomish County city with no lot coverage cap on structures.
Shops & garages
Accessory buildings sit to the side or rear of the house, at least 8 feet from it, and 5 feet from the rear line.
Larger lots
Residential Ultra Low Capacity lots start at 9,600 sq ft, and some are larger to fit a septic system.
Lot coverage
There’s no maximum lot coverage for structures, as long as parking, landscaping, setbacks and fire access work.
Small sheds
Unconditioned one-story sheds up to 200 sq ft need no building permit.
We work in tubular steel, cold-formed steel, steel truss and red iron. See what a steel building costs.
Permitting metal buildings in Arlington
Arlington measures front setbacks from the street’s ultimate right-of-way, not the edge of the current road.
Setbacks
- Front: 25 feet in the Ultra Low zone and 20 in the Low zone, or 40 from an arterial. Sides: 5 feet.
- Rear: 20 feet for the house and 5 for detached accessory buildings.
Other distances
- All buildings stay 5 feet from any easement and 15 feet from an open drainage facility.
- A private road serving more than four lots counts as a street for setbacks.
Height
- 35 feet in the Ultra Low and Low zones, 45 in Moderate and above.
- Height is measured from the average finished grade to the building’s highest point.
In Arlington, the front setback starts where the road will be. Setbacks are measured from the street’s planned right-of-way, which can sit behind today’s pavement edge. We’ll confirm the line before we place the building.
Outside city limits, Snohomish County rules apply. See all of Washington.
Start with a conversation
Let’s talk about your Arlington project.
Tell us what you’re planning and where you’re building. We’ll help you work out the next steps.
- Tell us what and whereSend us the size, how you’ll use the building and the address.
- We check the siteWe confirm who permits the address and which code and loads apply.
- You get a clear recommendationWe recommend the frame that fits and price it against the alternatives.
Or call
417-218-8348