Landscaping Rules in Auburn, WA: What Residents Actually Need to Know
If you live in Auburn or are thinking about moving there, landscaping rules are one of those things you probably won't think about until they affect you directly. Auburn has 8 specific rules on the books covering different aspects of landscaping rules, and some of them might surprise you.
Tree Trimming
Auburn regulates tree pruning under ACC 18.76 Tree Preservation. Trimming of significant trees over 6 in DBH must follow ANSI A300; topping is discouraged. ROW branches under 14 ft must be trimmed.
Key details: Significant Tree DBH: 6 inches most species. Topping: Discouraged, may be removal. Street Clearance: 14 ft required. Sidewalk Clearance: 8 ft required. Code: ACC 18.76 and 12.56.
Contact your local code enforcement office for specific penalty information.
Water Restrictions
Auburn Utilities uses voluntary lawn watering guidelines May-September with odd-even schedules and watering before 10 AM or after 6 PM. Mandatory drought restrictions activate under ACC 13.06.
Key details: Code: ACC Chapter 13.06. Voluntary Season: May through September. Normal Schedule: Odd-even, 2-3 days. Stage 2 Limit: 2 days per week. Max Fine: $500 mandatory stages.
Contact your local code enforcement office for specific penalty information.
Rainwater Harvesting
WA authorizes rainwater harvesting under RCW 90.03.260. Auburn allows rooftop rain barrels for non-potable use with no permit. Systems over 5,000 gal need review. Potable use requires DOH approval.
Key details: State Authorization: RCW 90.03.260. No Permit Under: Rain barrels typical size. Permit Threshold: Over 5,000 gallons. Potable Use: DOH approval WAC 246-290. Stormwater Benefit: Encouraged BMP.
Contact your local code enforcement office for specific penalty information.
If you are coming from a city with tighter rules, you will find Auburn gives residents more flexibility on rainwater harvesting.
Grass Height Limits
Auburn regulates overgrown vegetation as a nuisance under ACC 8.12. Grass and weeds over 12 inches on developed lots trigger abatement notice. Native plantings are exempt with approved plan.
Key details: Height Limit: 12 inches typical. Code: ACC Chapter 8.12. Notice Period: 10 to 14 days. Native Plants: Exempt with plan. Report Line: (253) 931-3040.
Contact your local code enforcement office for specific penalty information.
The rules around grass height limits in Auburn lean permissive, but that does not mean anything goes.
Artificial Turf
Auburn permits artificial turf in residential yards with no specific ban. Commercial and multi-family projects must meet ACC 18.50 screening and ACC 13.48 stormwater standards. HOAs may restrict.
Key details: Residential Use: Generally allowed. Stormwater Trigger: Over 5,000 sf impervious. Commercial Landscape: Cant replace live plants. Critical Areas: Not allowed in buffers. HOA: May require approval.
Contact your local code enforcement office for specific penalty information.
If you are coming from a city with tighter rules, you will find Auburn gives residents more flexibility on artificial turf.
Native Plants
Auburn encourages native plants under ACC 18.50. Natives satisfy critical area mitigation and stormwater plans. Native yards are exempt from the tall grass rule when intentionally designed and maintained.
Key details: Encouraged By: ACC 18.50 and 16.10. Critical Area Req: Natives required. Exempt From: Tall grass rule 8.12. Permit: Not needed residential. Free Resource: King Conservation District.
Contact your local code enforcement office for specific penalty information.
Auburn is more permissive than most cities when it comes to native plants. That said, there are still limits.
Weed Ordinances
Auburn owners must control state-listed noxious weeds under RCW 17.10 and King County Weed Board rules. Class A must be eradicated, Class B controlled. ACC 8.12 treats overgrown weeds as nuisance.
Key details: State Law: RCW 17.10. Enforcement: King County Weed Board. Class A: Must eradicate. Class B: Must control spread. City Code: ACC 8.12.
Contact your local code enforcement office for specific penalty information.
Tree Removal & Heritage Trees
Auburn requires a tree removal permit under ACC 18.76 for significant trees 6 in DBH or larger. Hazard trees have an expedited process. Unpermitted removal can trigger fines up to $5,000 per tree.
Key details: Permit Threshold: 6 in DBH and larger. Annual Exempt: 2 trees per residential lot. Replacement Ratio: 1-to-1 to 3-to-1. Max Penalty: $5,000 per tree. Code: ACC 18.76.
Contact your local code enforcement office for specific penalty information.
Compared to other cities, Auburn takes a harder line on tree removal & heritage trees. The enforcement and penalty structure reflects that.
The Bottom Line
Compared to many U.S. cities, Auburn gives residents more room on landscaping rules. 4 of the 8 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.
This guide is based on Auburn's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.