Issaquah, WA Property Maintenance: Property Blight (2026)
Key Facts
- Applies to
- Vacant or uninhabited commercial property
- Plant height limit
- 24 inches above grade, unless part of an approved landscape plan
- Vehicles
- Parking or storage prohibited unless a permitted commercial parking lot
- Structure security
- Locks or barriers, plywood painted to match the primary color
- Daily penalty
- $250.00 per day after the compliance date (IMC 8.45.120)
- Unsecured vacant structure
- Deemed unsafe under Construction Administrative Code Section 116.1
Summary
Issaquah's Land Use Code sets blight standards for vacant or uninhabited commercial property in LUC 18.502.030: structures must be secured, no vehicle parking or storage, litter removed, and weeds and plants kept to 24 inches in height above grade. Uncorrected conditions can be abated by the City at the owner's cost under chapter 8.45 IMC.
A. Intent. The purpose of this section is to establish standards for vacant or uninhabited commercial properties. These standards are intended to reduce visual blight, aid in emergency access and fire safety, guard against the creation of rodent and pest harborage, and reduce the impact on the natural environment from noxious weeds. ... C. Maintenance and Security of Structures. Vacant or uninhabited structures must be secured by use of appropriate locks, physical barriers such as plywood sheeting, or other methods to ensure that the structure(s) are secure and accessible only to the property owner and/or their agent(s). ... Structures must be maintained in a condition such that they are not a fire hazard, in danger of structural failure, or in violation of codes as adopted under IMC Title 16 , Buildings and Construction, or any other applicable section of the IMC. ... 2. Weeds, grass, and other plants may not exceed 24 inches in height above grade, unless such plant is part of an approved landscape plan per Chapter 18.606 IMC or is for tree preservation per Chapter 18.812 IMC.
Full Breakdown
Issaquah prints its blight rule in the Land Use Code, LUC 18.502.030, which sets standards for vacant or uninhabited commercial properties. The stated intent is to reduce visual blight, aid in emergency access and fire safety, guard against the creation of rodent and pest harborage, and reduce the impact on the natural environment from noxious weeds.
The standards are specific. Parking or storing motor vehicles, trailers, carts or other vehicles on the property is prohibited unless it is a permitted use and the review has occurred for a commercial parking lot (subsection B). Vacant structures must be secured with appropriate locks, or physical barriers such as plywood sheeting, so they are accessible only to the owner or the owner's agents, and plywood or other barriers must be painted to match the primary color of the structure (subsection C). Structures cannot be a fire hazard, in danger of structural failure, or in violation of the codes adopted under IMC Title 16. Under subsection D, the property must be maintained to remove litter, garbage and yard waste and to control noxious or destructive plants, and weeds, grass and other plants cannot exceed 24 inches in height above grade unless part of an approved landscape plan or tree preservation under Chapters 18.606 or 18.812 IMC. Any fence on a vacant property must follow IMC 18.600.090, be properly installed and maintained in good condition, and sit interior of any perimeter landscaping (subsection E).
Dangerous buildings are handled in the building codes. The Construction Administrative Code adopted by IMC 16.04.010 includes Section 116, which deems a vacant structure that is not secured against unauthorized entry unsafe, counts a building as dangerous when it is neglected, damaged, dilapidated, unsecured or abandoned so as to become an attractive nuisance, and lets the Building Official post a placard of condemnation on a vacant structure unfit for habitation and order it closed, with the cost charged against the real estate as a lien.
Violations & Fines
Chapter 8.45 IMC states its purpose as enforcing the City's development, land use, environmental and public health regulations. A notice of violation and order carries a cumulative penalty of $250.00 per day from the compliance date, repeat violations within 2 years can draw up to $500.00 per day, and a condition left uncorrected is declared a public nuisance the City can abate, recovering its costs and legal fees from the responsible persons, the property, or both.
Frequently Asked Questions
How tall can weeds be on a vacant commercial lot in Issaquah?
Do boarded-up buildings have to look a certain way?
Can a vacant commercial lot be used for parking cars?
What happens if the owner ignores a violation notice?
Sources & Official References
Other rules in Issaquah
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