ZIP 98052, King County, Washington
This page is assembled from official public data — Washington L&I contractor licences, Census business counts, BLS wages and ACS household estimates — plus hand-researched requirement rows, each linked to its official source. Every number below carries its source and date, and anything we could not verify is listed as an open question.
Generated 2026-10-02. Your free report starts from this layer for your ZIP, then ranks every service for your budget, hours and equipment and adds startup costs, seasonality, licensing steps and a 90-day plan. How every number is sourced
Who already operates in King County (ZIP 98052)
Observed supply, not demand or quality. Public data only — nothing here is a forecast.
| Service | Licensed operatorsZIP · county · WA L&IGovernment record | Employer firmscounty · CBPGovernment record | Self-employedcounty · NESGovernment record | Businesses per 10k householdscomputedComputed | Avg weekly wageemployees · QCEWGovernment record | Bond (max) · insurance minimumrequirementsResearched estimate | Open questionswe could not confirm |
|---|---|---|---|---|---|---|---|
| Pest control1 | 0 · 7 | 44 | 21 | 0.7 | $1,346/wk | — · $100,000 | 2 |
| HVAC2 | 9 · 217 | 468 | 301 | 8.2 | $2,285/wk | $30,000 · $250,000 | none |
| Plumbing3 | 12 · 431 | 468 | 301 | 8.2 | $2,285/wk | $6,000 · $200,000 | 2 |
| Electrical | 22 · 743 | 477 | 275 | 8.0 | $2,303/wk | $4,000 · — | 2 |
| Handyman4 | 3 · 108 | 1,651 | — | — | $1,375/wk | $30,000 · $250,000 | none |
| Pressure washing5 | 1 · 53 | 105 | 335 | 4.7 | $1,326/wk | $15,000 · $250,000 | 1 |
| Gutter cleaning6 | 0 · 23 | 105 | 335 | 4.7 | $1,326/wk | $15,000 · $250,000 | 1 |
| Residential cleaning7 | No L&I licence | 649 | 3,990 | 49.3 | $865/wk | — | 1 |
| Pet-waste removal8 | No L&I licence | 217 | 1,563 | 18.9 | $704/wk | — | 1 |
| Junk hauling9 | No L&I licence | 61 | — | — | $1,829/wk | — | 1 |
| Mobile detailing10 | No L&I licence | 96 | 166 | 2.8 | $851/wk | — | 1 |
1Primary licensing is WSDA, which has no bulk feed; L&I specialty SZ counts only structural-pest contractors registered with L&I.
2Census NAICS 238220 (QCEW 238221/238222) combines plumbing and HVAC contractors; these counts are shared with plumbing.
3Census NAICS 238220 (QCEW 238221/238222) combines plumbing and HVAC contractors; these counts are shared with HVAC.
4There is no handyman NAICS code; 236118 Residential Remodelers is a proxy.
5561790 Other Services to Buildings and Dwellings is a proxy shared with gutter cleaning and other building services.
6561790 is a shared proxy. L&I specialty CV is gutter and downspout installation; cleaning-only scope is unconfirmed.
7561720 Janitorial Services includes commercial janitorial firms.
8812910 Pet Care (except Veterinary) is a proxy covering grooming, boarding and waste removal.
9562111 Solid Waste Collection is a proxy that includes municipal and commercial haulers.
10811192 Car Washes is a proxy that includes fixed-location washes.
Density = (employer firms + self-employed) ÷ occupied homes × 10,000, from Census CBP 2023, NES 2022 and ACS 2020–2024. Sources and dates for every number →
Government recordHouseholds in King County, Washington: median income $124,746 · median home value $859,900 · median gross rent $2,092 · 941,054 occupied homes (ACS 5-year 2020-2024).
General business licensing (every service)
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Seattle | City of Seattle (FileLocal) | Seattle business license2026 bracket for $20k–$500k gross: $110 before July 1, $55 after (higher brackets $500 / $1,200 / $2,400). Exempt with no Seattle location and ≤$4,000 in-city gross. Renewals due Dec 31. Separate from B&O tax (2026 exemption threshold $2 million). | $55–$110 / year | Researched estimatedocumentation-cited (researched 2026-09-30) | www.filelocal-wa.gov |
| Washington | WA Dept. of Revenue — Business Licensing Service | Washington business license (new)Generally required at $12,000+ gross, when collecting sales tax, hiring, using a trade name, or needing a city endorsement. City endorsement fees vary. Covers 200+ partner cities; Seattle is not one. | $50 one-time | Researched estimatedocumentation-cited (researched 2026-09-30) | dor.wa.gov |
| Washington | WA Dept. of Revenue — Business Licensing Service | Washington business license renewal | $5 / year | Researched estimatedocumentation-cited (researched 2026-09-30) | dor.wa.gov |
Rows for a city apply only if the business operates there.
Requirements by service
Pest control
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA State Dept. of Agriculture (RCW 15.58 / 17.21) | Commercial Pesticide Applicator licenseExam-based; renews annually. | $250 / year | Researched estimatedocumentation-cited (researched 2026-09-30) | cms.agr.wa.gov |
| Washington | WA State Dept. of Agriculture (RCW 15.58 / 17.21) | Commercial Pesticide Operator license | $85 / year | Researched estimatedocumentation-cited (researched 2026-09-30) | cms.agr.wa.gov |
| Washington | WA State Dept. of Agriculture (RCW 15.58 / 17.21) | Pest Control Consultant license | $75 / year | Researched estimatedocumentation-cited (researched 2026-09-30) | cms.agr.wa.gov |
| Washington | WA State Dept. of Agriculture (RCW 15.58 / 17.21) | Structural Pest Inspector license | $85 / year | Researched estimatedocumentation-cited (researched 2026-09-30) | cms.agr.wa.gov |
| Washington | WA State Dept. of Agriculture (RCW 15.58 / 17.21) | License exam | $25 per test | Researched estimatedocumentation-cited (researched 2026-09-30) | cms.agr.wa.gov |
| Washington | WA State Dept. of Agriculture (RCW 15.58 / 17.21) | Financial responsibility (insurance minimum)$50,000 public liability + $50,000 property damage, or $100,000 combined single limit; deductible no more than $5,000. A surety bond alternative is permitted (RCW 17.21.160) — minimum not established, see gaps. | $100,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | cms.agr.wa.gov |
Government recordActive L&I licences: Washington 38 · King County 7 · ZIP 98052: 0
Median bond on file $15,000 · median insurance policy on file $1,000,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 561710 | 44 | 531 | 36,202 | — | 2023 |
| NES (nonemployers) | King County | 56171 | 21 | — | 1,219 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 561710 | 54 | 984 | — | $1,346/wk | 2026Q1 |
Primary licensing is WSDA, which has no bulk feed; L&I specialty SZ counts only structural-pest contractors registered with L&I.
- No bulk licensee feed: WSDA pesticide licensees are available only by manual lookup. The L&I SZ count covers only structural-pest contractors registered with L&I, not WSDA licensees.
- Bond alternative minimum: RCW 17.21.160 allows a surety bond instead of insurance; its minimum amount was not established.
HVAC
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA Dept. of Labor & Industries | Construction contractor registration (HVAC is an L&I specialty; there is no standalone HVAC license)Renewal cycle not stated in the researched source. | $150.20 per renewal | Government recordverified live (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | Contractor surety bond$15,000 specialty contractor; $30,000 general contractor. | $15,000–$30,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | General liability insurance minimum$200,000 public liability + $50,000 property damage, or $250,000 combined single limit. | $250,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | Electrical HVAC/refrigeration specialty (06A) when the work includes electrical scopeElectrical or refrigeration scope may trigger additional L&I electrical credentials. | — | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
Government recordActive L&I licences: Washington 1,315 · King County 217 · ZIP 98052: 9
Median bond on file $15,000 · median insurance policy on file $1,000,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 238220 | 468 | 11,062 | 1,107,062 | — | 2023 |
| NES (nonemployers) | King County | 23822 | 301 | — | 30,293 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 238221 | 375 | 3,659 | — | $1,670/wk | 2026Q1 |
| QCEW (private sector, quarterly) | King County | 238222 | 112 | 7,222 | — | $2,596/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 238220 | 18 | — | — | — | 2023 |
Census NAICS 238220 (QCEW 238221/238222) combines plumbing and HVAC contractors; these counts are shared with plumbing.
Plumbing
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA Dept. of Labor & Industries (RCW 18.106) | Plumbing contractor registrationDiffers from the $150.20 construction-contractor fee quoted for other trades — see gaps. | $139.10 / 2 years | Researched estimatedocumentation-cited (researched 2026-09-30) | app.leg.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 18.106) | Designated plumber ID | $50 one-time | Researched estimatedocumentation-cited (researched 2026-09-30) | app.leg.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 18.106) | Journey-level plumber (PL01) exam applicationPlus a separate testing fee. | $189.80 one-time | Researched estimatedocumentation-cited (researched 2026-09-30) | app.leg.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 18.106) | Journey-level certificate renewalRequires 24 hours of continuing education. An L&I page states $242.70 — see gaps. | $227.90 / 3 years | Researched estimatedocumentation-cited (researched 2026-09-30) | app.leg.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 18.106) | Continuous surety bond | $6,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | apps.leg.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 18.106) | Insurance minimum$50,000 property damage; $100,000 bodily injury per person; $200,000 per occurrence. | $200,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | apps.leg.wa.gov |
Government recordActive L&I licences: Washington 2,220 · King County 431 · ZIP 98052: 12
Median bond on file $6,000 · median insurance policy on file $1,000,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 238220 | 468 | 11,062 | 1,107,062 | — | 2023 |
| NES (nonemployers) | King County | 23822 | 301 | — | 30,293 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 238221 | 375 | 3,659 | — | $1,670/wk | 2026Q1 |
| QCEW (private sector, quarterly) | King County | 238222 | 112 | 7,222 | — | $2,596/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 238220 | 18 | — | — | — | 2023 |
Census NAICS 238220 (QCEW 238221/238222) combines plumbing and HVAC contractors; these counts are shared with HVAC.
- Journey renewal fee conflict: WAC 296-400A-045 says $227.90 for three years; an L&I page said $242.70. The WAC is treated as authoritative until reconciled.
- Contractor registration fee: The research quotes $139.10 per two years for plumbing contractor registration but $150.20 for construction-contractor registration. Confirm which applies and whether both are required.
Electrical
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA Dept. of Labor & Industries (RCW 19.28) | Electrical contractor license2024 fee archive: $270.20 online, $312.30 in person or by mail. The current 2025–26 fee is unconfirmed. A designated administrator or master electrician is required. | $270.20–$312.30 / 2 years | Researched estimateuncertain (researched 2026-09-30) Open question | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 19.28) | Electrical/telecommunications contractor surety bond (or assignment of savings) | $4,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 19.28) | General liability insuranceNo statutory minimum reported; L&I encourages general liability but does not keep records of it. | — | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries (RCW 19.28) | Journey-level electrician certificate renewal$87 online, $99.90 by mail; renew from 90 days before to 90 days after expiry. | $87–$99.90 / 2 years | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
Government recordActive L&I licences: Washington 3,974 · King County 743 · ZIP 98052: 22
Median bond on file $4,000 · median insurance policy on file $1,500,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 238210 | 477 | 9,306 | 985,319 | — | 2023 |
| NES (nonemployers) | King County | 23821 | 275 | — | 14,562 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 238211 | 364 | 2,077 | — | $1,620/wk | 2026Q1 |
| QCEW (private sector, quarterly) | King County | 238212 | 182 | 7,052 | — | $2,504/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 238210 | 20 | — | — | — | 2023 |
- Current contractor fee: Only the 2024 fee archive ($270.20 online / $312.30 by mail per 24 months) was found; the 2025–26 amount is unconfirmed.
- Insurance not tracked: L&I does not record electrical contractor insurance, so the insurance feed carries no EC coverage and the median insurance figure excludes electrical licences.
Handyman
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA Dept. of Labor & Industries | Construction contractor registrationNo separate handyman license and no dollar threshold; construction contractors must register. Renewal cycle not stated in the researched source. | $150.20 per renewal | Government recordverified live (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | Registration reinstatement | $70.90 one-time | Government recordverified live (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | Contractor surety bond$15,000 specialty contractor; $30,000 general contractor. | $15,000–$30,000 face amount | Government recordverified live (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | General liability insurance minimum$200,000 public liability + $50,000 property damage, or $250,000 combined single limit. | $250,000 face amount | Government recordverified live (researched 2026-09-30) | lni.wa.gov |
Government recordActive L&I licences: Washington 446 · King County 108 · ZIP 98052: 3
Median bond on file $15,000 · median insurance policy on file $1,000,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 236118 | 1,651 | 6,559 | 450,724 | — | 2023 |
| QCEW (private sector, quarterly) | King County | 236118 | 1,041 | 4,582 | — | $1,375/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 236118 | 38 | — | — | — | 2023 |
There is no handyman NAICS code; 236118 Residential Remodelers is a proxy.
Pressure washing
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA Dept. of Labor & Industries | Construction contractor registration (specialty PW)Applies when the work falls under L&I's construction-contractor definition; cleaning-only scope unconfirmed — see gaps. | $150.20 per renewal | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | Specialty contractor surety bond | $15,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | General liability insurance minimum$200,000 public liability + $50,000 property damage, or $250,000 combined single limit. | $250,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
Government recordActive L&I licences: Washington 241 · King County 53 · ZIP 98052: 1
Median bond on file $15,000 · median insurance policy on file $1,000,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 561790 | 105 | 659 | 43,074 | — | 2023 |
| NES (nonemployers) | King County | 56179 | 335 | — | 18,548 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 561790 | 141 | 625 | — | $1,326/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 561790 | 3 | — | — | — | 2023 |
561790 Other Services to Buildings and Dwellings is a proxy shared with gutter cleaning and other building services.
- Cleaning-only scope: Whether pressure washing with no construction work requires L&I contractor registration needs confirmation from L&I.
Gutter cleaning
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| Washington | WA Dept. of Labor & Industries | Construction contractor registration (specialty CV, gutters/downspouts)CV covers gutter installation; cleaning-only scope unconfirmed — see gaps. | $150.20 per renewal | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | Specialty contractor surety bond | $15,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
| Washington | WA Dept. of Labor & Industries | General liability insurance minimum$200,000 public liability + $50,000 property damage, or $250,000 combined single limit. | $250,000 face amount | Researched estimatedocumentation-cited (researched 2026-09-30) | lni.wa.gov |
Government recordActive L&I licences: Washington 156 · King County 23 · ZIP 98052: 0
Median bond on file $15,000 · median insurance policy on file $1,000,000
The King County count includes licences whose business ZIP Census ZIP Business Patterns places in King County; ZIPs missing from that file count only toward the state total.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 561790 | 105 | 659 | 43,074 | — | 2023 |
| NES (nonemployers) | King County | 56179 | 335 | — | 18,548 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 561790 | 141 | 625 | — | $1,326/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 561790 | 3 | — | — | — | 2023 |
561790 is a shared proxy. L&I specialty CV is gutter and downspout installation; cleaning-only scope is unconfirmed.
- Cleaning-only scope: L&I specialty CV covers gutter and downspout installation; whether cleaning-only work requires registration is unconfirmed.
Residential cleaning
No trade-specific requirement on file — the general business licensing applies.
L&I does not register this trade, so there is no licensed-supply count.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 561720 | 649 | 7,129 | 296,896 | — | 2023 |
| NES (nonemployers) | King County | 56172 | 3,990 | — | 121,920 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 561720 | 643 | 8,018 | — | $865/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 561720 | 20 | — | — | — | 2023 |
561720 Janitorial Services includes commercial janitorial firms.
- Trade-specific licensing: No trade-specific state license was found in the researched sources; confirm local requirements beyond general business licensing.
Pet-waste removal
No trade-specific requirement on file — the general business licensing applies.
L&I does not register this trade, so there is no licensed-supply count.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 812910 | 217 | 1,688 | 54,505 | — | 2023 |
| NES (nonemployers) | King County | 81291 | 1,563 | — | 34,842 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 812910 | 211 | 1,622 | — | $704/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 812910 | 6 | — | — | — | 2023 |
812910 Pet Care (except Veterinary) is a proxy covering grooming, boarding and waste removal.
- Trade-specific licensing: No trade-specific state license was found in the researched sources; confirm local requirements beyond general business licensing.
Junk hauling
| Jurisdiction | Authority | Requirement | Amount | Confidence | Source |
|---|---|---|---|---|---|
| King County | Public Health – Seattle & King County (Board of Health Code Title 10) | Solid waste handling rules and permitsApplicability to small junk haulers and the fee are not established — see gaps. | — | Researched estimatedocumentation-cited (researched 2026-09-30) | cdn.kingcounty.gov |
L&I does not register this trade, so there is no licensed-supply count.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 562111 | 61 | 1,624 | 158,645 | — | 2023 |
| QCEW (private sector, quarterly) | King County | 562111 | 58 | 1,508 | — | $1,829/wk | 2026Q1 |
562111 Solid Waste Collection is a proxy that includes municipal and commercial haulers.
- County permit applicability and fee: King County Board of Health Title 10 governs solid waste handling; whether a small junk-hauling business needs a permit, and at what fee, is not established.
Mobile detailing
No trade-specific requirement on file — the general business licensing applies.
L&I does not register this trade, so there is no licensed-supply count.
| Source | Geography | NAICS | Establishments | Employment | Payroll / receipts ($000) | Avg weekly wage | Vintage |
|---|---|---|---|---|---|---|---|
| CBP (employer establishments) | King County | 811192 | 96 | 706 | 26,970 | — | 2023 |
| NES (nonemployers) | King County | 81119 | 166 | — | 7,797 | — | 2022 |
| QCEW (private sector, quarterly) | King County | 811192 | 106 | 974 | — | $851/wk | 2026Q1 |
| ZBP (employer establishments) | ZIP 98052 (REDMOND, WA) | 811192 | 6 | — | — | — | 2023 |
811192 Car Washes is a proxy that includes fixed-location washes.
- Stormwater rules: Wash-water discharge rules affect mobile detailing in Seattle; the primary source has not been captured yet.
Open questions for every service
- Unincorporated King County: The research states unincorporated King County has no county business license (state registrations, trade credentials, taxes and permits still apply); the primary source was not captured.
- Seattle 2026 fee figures: The Seattle bracket amounts come from Rule 5-002; the exact CPI-adjusted 2026 figures need FileLocal confirmation.
- CBP 2024 delayed: Census paused the 2024 County Business Patterns release over disclosure-avoidance changes; 2023 is the latest, and comparability with later years may break.
- Local service prices: No compliant automated source for local service prices exists: Angi, HomeAdvisor, Thumbtack and HomeGuide prohibit scraping. Prices in a brief must be researched manually, licensed, or labeled directional.
- ZIP-level demand: No dataset measures demand for a service in a ZIP. Counts here measure supply; any local demand figure is a model and must be labeled as one.
Sources
- American Community Survey 5-year estimates — U.S. Census Bureau — vintage 2020-2024, loaded 2026-09-30
- County Business Patterns — U.S. Census Bureau — vintage 2023, loaded 2026-09-30
- 2020 county reference file — U.S. Census Bureau — vintage 2020, loaded 2026-09-30
- Contractor License Data – Bond — Washington State Dept. of Labor & Industries — vintage 2026-09-30, loaded 2026-09-30
- Contractor License Data – General — Washington State Dept. of Labor & Industries — vintage 2026-09-30, loaded 2026-09-30
- Contractor License Data – Insurance — Washington State Dept. of Labor & Industries — vintage 2026-09-30, loaded 2026-09-30
- Nonemployer Statistics — U.S. Census Bureau — vintage 2022, loaded 2026-09-30
- Quarterly Census of Employment and Wages — U.S. Bureau of Labor Statistics — vintage 2026Q1, loaded 2026-09-30
- Open questions and source conflicts — MindMyBusiness research — vintage sha256:3bced914b858, loaded 2026-09-30
- Washington licensing and registration requirements — MindMyBusiness research (each row links its official source) — vintage sha256:3dbac667e390, loaded 2026-09-30
- ZIP Code Business Patterns (detail) — U.S. Census Bureau — vintage 2023, loaded 2026-09-30
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