Wenatchee By The Numbers
Inside Wenatchee city limits the adopted frost line depth is 18 inches. Unincorporated Chelan County applies 24 inches, six inches deeper.
Inside the city, a one story detached shed, playhouse, trellis, arbor or pergola needs no building permit at 200 square feet or less. It also has to keep a minimum setback of five feet from all property lines and a minimum clear distance of one foot from all other structures.
Out in unincorporated Chelan County the exemption is larger. Small accessory structures such as tool sheds and playhouses are exempt at 288 square feet or less, one story only.
Inside city limits a deck skips the building permit only if it is not more than 30 inches above adjacent grade at any point. It also cannot serve the required exit door.
The City of Wenatchee design criteria table sets a flat roof snow load of 40 psf, marked non-reducible. That is a flat roof design load, which is a different measure from a ground snow load.
Inside Wenatchee city limits, a detached garage or other residential accessory building footprint is capped at 900 square feet or 60 percent of the principal structure's floor area, whichever is greater. Attached garages count in that floor area and basements do not.
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Permits In Wenatchee
This desk runs building permits, plan review and inspections for any address inside Wenatchee city limits, plus zoning enforcement under Wenatchee City Code Title 10. A one story detached shed up to 200 square feet needs no building permit. That exemption only holds if the shed sits at least five feet from every property line and at least one foot clear of every other structure.
This desk handles building permits and inspections for unincorporated addresses outside Wenatchee city limits. In the Wenatchee urban growth area the county administers the city's own zoning title, so the zoning can match while the building rules do not. The county exempts one story accessory structures of 288 square feet or less and designs to a 24 inch frost line rather than the city's 18.
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Based in Quincy, serving nine towns across Grant, Douglas, and Chelan counties

What Breaks Around Wenatchee
- The shed number changes at the city line. A 288 square foot shed that is exempt in unincorporated Chelan County is permitted work inside Wenatchee city limits, where the exemption stops at 200 square feet.
- Footings get dug to two different depths here. The city designs to an 18 inch frost line and unincorporated Chelan County to 24, so the same footing detail is wrong on one side of the line.
- Roofs inside the city carry a 40 psf flat roof snow load. That figure comes from the city design criteria table, it is marked non-reducible, and it is a different measure from a ground snow load.
Questions
Wenatchee Questions
The permit questions that come up most on Wenatchee jobs, with the city and county numbers side by side.
Do I need a permit for a shed in Wenatchee?
Inside Wenatchee city limits, no building permit if the shed is 200 square feet or less. It also has to be one story, sit five feet or more from every property line, and stand a foot or more clear of every other structure. Miss either distance and the code calls it attached, which means a permit.
Outside the city, unincorporated Chelan County exempts up to 288 square feet. Same one story limit, larger footprint. The same shed can be exempt at a county address and permitted work at a city address, so the answer starts with which side of the line the lot is on.
How deep do footings have to go in Wenatchee?
Eighteen inches inside the city, twenty four in unincorporated Chelan County. The City of Wenatchee design criteria table sets the 18 inch frost line depth. The county sets 24 inches for the same work.
This is the fact most commonly gotten wrong here. A crew that works both sides of the line and carries one number digs short or deep every time it crosses. Give us the address and the footing gets designed to the jurisdiction that inspects it.
Do I need a permit to build a deck in Wenatchee?
No permit inside city limits if the deck is not more than 30 inches above adjacent grade at any point. At any point is the part that catches people on a sloped lot, since the low corner is what pushes a deck over the line.
There is a second condition. The deck also cannot serve the required exit door, and if it does it is permitted work no matter how low it sits, per the city exemption list.
Does a fence in Wenatchee need a building permit?
Under the city building code, no permit for a fence not over 6 feet high. That settles the building permit question and nothing else.
Zoning sets a separate height limit. In residential and mixed use zones a fence in the street or street side setback area is capped at four feet if it is solid. So a six foot solid fence can be permit exempt and still be too tall for the spot you want it in.
Do I need a permit to reroof a house in Wenatchee?
Yes, inside Wenatchee city limits a reroof is permitted work. Reroofing is not on the city's permit exemption list, so it needs a building permit.
Check the snow load while the roof is open. The city design criteria table sets a flat roof snow load of 40 psf, marked non-reducible. That figure is a flat roof design load and is not the same thing as a ground snow load.
How do I check a Wenatchee handyman is registered and bonded?
Look the registration number up with the state, not with the contractor. Washington requires contractor registration through Labor and Industries, and you can pull a registration number, bond and liability policy through the state Verify a Contractor lookup.
Ask for the number before anyone starts work. We are licensed, bonded and insured, and we hand the registration number over so you can run it yourself rather than take our word for it. Estimates are free either way.
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