Tree service in Issaquah, Washington
Issaquah requires a permit to remove a significant tree, 6 inches DBH or 8 inches for alder and cottonwood, and also for pruning more than a quarter of a tree’s leaf and stem area in 12 months.
6" DBH (8" alder/cottonwood) per secondary source
Since 2016; peak Feb · Dec. Rank 16 of 39 in Washington.
Seattle-Tacoma-Bellevue, WA, BLS May 2025 mean wage. Not a price.
Census Vintage 2025 estimate.
USDA 2023 zone by ZIP code.
Tree removal permits in Issaquah
Issaquah regulates both removal and heavy pruning. The city FAQ, citing IMC 18.812.050 through .070, exempts nonsignificant trees, normal pruning and public-agency right-of-way work, but requires a permit for snags and for excessive pruning, defined as removing more than a quarter of the leaf and stem area within 12 months. A secondary source puts the significant-tree threshold at 6 inches DBH, or 8 inches for alder and cottonwood. The Community Planning and Development Permit Center issues permits; no fee was published.
A 2024 King County summary lists the permit types: dead, diseased or hazard trees, solar access, thinning and nuisance. Heritage trees are covered by IMC 18.812.120, whose text was not retrieved, so ask the Permit Center if a large tree might qualify. Confirm the threshold with the city before work. Compare rules in the Washington permit guide.
Permit required for trees 6 in DBH and up
Threshold: 6" DBH (8" alder/cottonwood) per secondary source
Allowances and tiers: FAQ: exempt are nonsignificant trees, normal pruning, public-agency ROW work; permit for snags and excessive pruning (over 1/4 of leaf/stem area in 12 months)
Street trees: Public agencies/utilities exempt in ROW; ask the city about private work in the right-of-way
Issued by: Community Planning & Development – Permit Center
IMC 18.812.050-.070; IMC 16.26.040 (permit required) · Official page · Checked 2026-10-02
Every city compared: tree removal permits in Washington.
Source: Community Planning & Development – Permit Center, IMC 18.812.050-.070; IMC 16.26.040 (permit required). Checked 2026-10-02.
Storm records for King County (covers Issaquah)
A single November night shows what this area’s trees face. NOAA logged 133 storm reports for King County since 2016, ranked 16th of Washington’s 39, with heavy snow leading at 68 and high wind next at 23; 84 percent fall between November and February. FEMA’s National Risk Index (December 2025) rates winter weather Relatively High at 94.7 and ice storm Relatively High at 91.1.
That same index scores strong wind for the county at just 4.5, Very Low, yet the 2024 east wind event below did more harm than any snow day. Reports fell to 32 in the latest three years from 54 in the three before. Ratings describe averages; a single unusual storm sets the bill.
Reports by month, 2016 to 2026
| Event type | Reports |
|---|---|
| Heavy Snow | 68 |
| High Wind | 23 |
| Winter Weather | 13 |
| Ice Storm | 11 |
| Strong Wind | 9 |
| Winter Storm | 8 |
| Wildfire | 1 |
On November 19, 2024, a rapidly deepening low passed offshore of Western Washington and drove very strong easterly winds across the region. Coming from an unusual direction at that strength, the wind caused extensive tree damage around Puget Sound: homes and vehicles were hit, power was out widely for days, and 2 people were killed by falling trees. NOAA logged 7 high-wind reports in the Bellevue, East Puget Sound Lowlands and Seattle zones. Trees rooted for southwesterly storms can fail when loaded from the east.
NWS forecast zones covering the county: Cascades of Snohomish and Northern King Counties; Cascades of Southern King County; City of Seattle; Eastside; Foothills and Valleys of Central King County; Foothills and Valleys of Pierce and Southern King Counties.
Source: NOAA NCEI Storm Events Database, 2016 to June 2026 · NWS zone-county correlation files (2019 to 2026 versions). Checked 2026-10-02. NOAA Storm Events 2016-2026; zone-based events assigned to every county the NWS zone covers using the zone-county correlation file in force on the event date (2019-04-02 file used for 2016-2018).
Power lines and utilities in Issaquah
Puget Sound Energy serves Issaquah, as it does most of King County outside Seattle; Tanner Electric Co-op also has rural King County territory. PSE trims near overhead primary lines in the right-of-way, but it states that it does not trim service lines from the pole to the house; it performs a safety disconnection so you or a private arborist can do that work. PSE publishes no clearance standard and cites 10 feet only as an electrocution-risk distance. Report outages at 1-888-225-5773 and downed lines to 911.
Confirm your provider on your bill and in the utility directory, and read tree removal near power lines.
| Utility | Outage line | Tree trimming requests |
|---|---|---|
| Puget Sound Energy | 1-888-225-5773 (https://www.pse.com/en/contactpse) | request page |
Inferred: PSE serves King Co. outside Seattle; city is not among Seattle City Light franchise cities; Tanner Electric Co-op also has rural King Co. territory
Source: utility vegetation-management pages linked above; WAC 296-24-960 (WA L&I). Checked 2026-10-02.
Pests and quarantines
Spongy moth (formerly gypsy moth)
Spongy moth, formerly gypsy moth, is confirmed in the area with no quarantine. Report sightings via the WA Invasives app, inspect wood, outdoor furniture and RVs before moving them from infested states, and host a trap if asked. See the pests hub.
- Spongy moth (formerly gypsy moth): Report sightings (OR Invasive Species Hotline / WA Invasives app); inspect wood, outdoor furniture, RVs before moving from infested states; host a trap if asked
Source: Spongy moth (formerly gypsy moth). Checked 2026-10-02.
Growing conditions in Issaquah
Issaquah is in USDA hardiness zone 8b. Given 68 heavy-snow reports and the 2024 east wind, replacement trees need a sound root plate and a balanced crown; keep tall species well back from the house and well clear of PSE’s overhead lines.
USDA hardiness zone 8b (2023 map, by ZIP code).
Source: USDA Plant Hardiness Zone Map 2023 (OSU PRISM ZIP data). Checked 2026-10-02.
Labor index for Issaquah
BLS puts the Seattle-Tacoma-Bellevue mean wage for tree trimmers and pruners at $33.85 an hour, median $32.75, with about 310 workers (May 2025). It is labor cost, not a quote; rigging, permits and disposal add to the modeled ranges.
Seattle-Tacoma-Bellevue, WA: $33.85 per hour mean wage for tree trimmers and pruners (BLS, May 2025). This is a labor index, not a price; the modeled crew-hour cost used on this site is $210 (method).
843 landscaping-services establishments were counted in King County in 2023 (Census County Business Patterns, NAICS 561730).
Source: BLS Occupational Employment and Wage Statistics, May 2025, SOC 37-3013 · U.S. Census Bureau, County Business Patterns 2023, NAICS 561730. Checked 2026-10-02.
ZIP codes and nearby cities
Issaquah covers ZIP codes 98027 and 98029, home to 39,423 people in 2025. Sammamish is 3 miles away, Bellevue 6, Renton and Mercer Island 8, Redmond 9 and Tukwila 11. County data is on the King County page.
ZIP codes with the most land inside Issaquah: 9802798029
County page: King County.
Source: U.S. Census Bureau, 2020 ZCTA to place and county relationship files. Checked 2026-10-02.
Tree services in Issaquah
The service pages apply Issaquah’s rules: tree removal with the 6-inch threshold, tree trimming with the quarter-crown pruning limit, stump grinding with 811, and emergency tree service after wind or snow.
What to do next
Measure the trunk and estimate how much crown you plan to remove; either can trigger a permit, so call the Permit Center first. After a windstorm, a risk assessment can document a hazard. Verify the contractor in the Washington license lookup.
Sources
- Issaquah tree code (IMC 18.812.050-.070; IMC 16.26.040 (permit required)), checked 2026-10-02.
- NOAA NCEI Storm Events Database, 2016 to June 2026, checked 2026-10-02.
- NWS zone-county correlation files (2019 to 2026 versions), checked 2026-10-02.
- FEMA National Risk Index, December 2025 release, checked 2026-10-02.
- U.S. Census Bureau, Population Estimates Vintage 2025 and 2020 Census, checked 2026-10-02.
- BLS Occupational Employment and Wage Statistics, May 2025, SOC 37-3013, checked 2026-10-02.
- USDA Plant Hardiness Zone Map 2023 (OSU PRISM ZIP data), checked 2026-10-02.
- U.S. Census Bureau, 2020 ZCTA to place and county relationship files, checked 2026-10-02.
- Issaquah heritage or landmark tree program, checked 2026-10-02.
- Puget Sound Energy vegetation management, checked 2026-10-02.
- Spongy moth (formerly gypsy moth), checked 2026-10-02.
Comparing quotes? Check these eight things first.
Two quotes for the same tree can differ by thousands. The gap is usually in what's included, not the cutting.
We don't vet or license anyone. These are the official lookups; each takes about a minute.
| What | Where | What it shows |
|---|---|---|
| Oregon CCB license | CCB license search | Active status, bond, insurance on file, complaints |
| Oregon LCB license | LCB verify a license | Landscape contracting license, which covers tree work |
| Washington contractor registration | L&I Verify | Registration, bond, workers' comp, lawsuits, violations |
| ISA Certified Arborist | ISA directory | Current certification and credential number |
How to read them: Oregon guide · Washington guide
Westcoast-Tree.org is an independent information site. If you call a number on this site, the call goes to a tree service that covers your area and we may be paid a referral fee by that company. We don't perform tree work and we don't vet, license or insure anyone. Cost figures are modeled estimates, not quotes (method). Not affiliated with the former Westcoast Tree Care Inc of Tumwater, WA.