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King County, WA Business Licensing & Operations: Auto Repair on Residential Property (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Zones affected
R, UR, NB, CB, RB
Banned as home occupation
Auto, truck, heavy equipment repair
Also banned
Auto body work or painting
Alternative path
Home industry permit under 21A.30.090
Applies to
Unincorporated King County only

Summary

Unincorporated King County bans auto, truck, and heavy equipment repair or auto body work as a home occupation in the R, UR, NB, CB, and RB zones under County Code section 21A.30.080.

City-specific rules exist: Seattle, Kirkland, Federal Way, and Kent have their own auto repair on residential property rules that differ from King County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

E. The following uses, by the nature of their operation or investment, tend to increase beyond the limits allowed for home occupations. Therefore, the following shall not be allowed as home occupations:

1. Automobile, truck, and heavy equipment repair;

2. Auto body work or painting;

3. Parking and storage of heavy equipment;

4. Storage of building materials for use on other properties;

5. Hotels, motels or organizational lodging;

6. Dry cleaning;

7. Towing services;

8. Trucking, storage, or self service, except for parking or storage of one commercial vehicle used in home occupation;

9. Veterinary clinic;

10. Recreational cannabis processor, recreational cannabis producer, or recreational cannabis retailer; and

11. Winery, brewery, distillery, and remote tasting room uses;

F. In addition to required parking for the dwelling unit, on-site parking is provided as follows:

1. One stall for each nonresident employed by the home occupations; and

2. One stall for patrons when services are rendered on-site;

G. Sales are limited to:

1. Mail order sales;

2. Telephone, Internet, or other electronic commerce sales with off-site delivery; and

3. Items accessory to a service provided to patrons who receive services on the premises;

H. On-site services to patrons are arranged by appointment;

Full Breakdown

King County Code section 21A.30.080 lists home occupation uses that exceed the scope allowed in a residence and bars them outright in the R, UR, NB, CB, and RB zones: automobile, truck, and heavy equipment repair, and auto body work or painting. A resident wanting to fix cars for pay at a house in one of these zones cannot register it as a home occupation and must instead seek a home industry permit under K.C.C. 21A.30.090, if the site qualifies, or locate the business in a zone that allows auto repair outright.

Violations & Fines

King County's Code Enforcement Section can order abatement and impose civil penalties under K.C.C. Title 23 for operating a prohibited home occupation without approval.

Frequently Asked Questions

Can I fix cars for money at my house in unincorporated King County?
No. County code lists auto, truck, and heavy equipment repair and auto body work or painting as uses barred from being run as a home occupation in the R, UR, NB, CB, and RB zones.
Does this rule apply inside Seattle or Bellevue?
No. This is the King County Code and only governs unincorporated areas. Seattle, Bellevue, Kent, Renton, and other incorporated cities enforce their own municipal zoning codes instead.

Sources & Official References

Other rules in King County

All King County rules

Compare King County to another location·View the Washington business licensing & operations overview

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