Real estate · County · Washington
Home inspectors in King County, WA
How King County, WA compares with other counties and the U.S. for home inspectors: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 76 out of 100: High
Ranked #25 of 415 scored counties
#1 of 10 scored counties in Washington
- Listings
- 60
- 1 chain location (2%)
- Official establishments
- 48
- −34.2% since 2019
- Household spending a year
- $20.7B
- On rent and homeowner costs · $22,002 a household
- Housing spending per listing (U.S. = 100)
- 131
- 31% above the U.S.
- Listings per 10k households
- 0.6
- In line with the U.S.
- Population, 2025
- 2,344,939
- +3.1% since 2020
See the home inspectors around any address in King County
The site report maps the home inspectors on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
The Groundwork market score for home inspectors in King County is 76 (high), #25 of 415 scored counties and #1 of 10 scored counties in Washington. That puts it in the top 10% of counties for home inspectors.
As of September 2026, map listings count 60 home inspectors in King County. One of them (2%) is a chain location, against 3% across the U.S. That comes to 0.6 for every 10,000 households, in line with the U.S. rate of 0.6.
Household spending on rent and homeowner costs in King County comes to about $20.7B a year: $22,002 per household, 32% above the U.S. average. Housing spending per business is 31% above the U.S. figure. That figure is all rent and homeowner costs, used as a measure of housing demand; it is not money home inspectors take in.
In 2023, official counts showed 48 businesses with payroll in King County classed as building inspection services, down 34.2% from 2019. That is one for every 19,605 households, against one for every 17,237 across the U.S. Since fiscal 2022, 2 SBA-backed loans worth $60K have gone to businesses classed as building inspection services in King County. Population estimates put the population change in King County from 2020 to 2025 at +3.1%, in step with the U.S. (+3.1%).
How King County compares
The same measures for Washington and the whole U.S. Housing spending per listing divides all rent and homeowner costs by the listings counted: a measure of housing demand for each business, not money any of them take in, so it is shown against the U.S. (100) only. Households per establishment divides households by the official count.
| Measure | King County | Washington | U.S. |
|---|---|---|---|
| Listings per 10k households | 0.6 | 0.6 | 0.6 |
| Housing spending per listing (U.S. = 100) | 131 | 119 | 100 |
| Households per official establishment | 19,605 | 14,735 | 17,237 |
| Official establishment growth, 2019–2023 | −34.2% | −10.3% | +6.5% |
| Population growth, 2020–2025 | +3.1% | +3.6% | +3.1% |
| Spending per household on rent and homeowner costs | $22,002 | $19,779 | $16,661 |
| Median household income | $124,746 | $98,141 | $80,734 |
| Groundwork market score | 76 | 62 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 73 → 48−34.2% over the period
- Employees, 2023
- 164
- Annual payroll, 2023
- $9.3M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 601 chain location
- Listings at the U.S. rate for this spending
- 79The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 2
- Amount
- $60K
SBA-backed loans to businesses classed as building inspection services in King County, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in King County
- Population, 2025 estimate
- 2,344,939+3.1% since 2020
- Households
- 941,054
- Median age
- 38.8
- Homes lived in by their owners
- 55%
- Vehicles per household
- 1.6
- Land area
- 2,116 sq. mi.
- People per square mile
- 1,081
- Median household income
- $124,746+31.4% vs. 2015–2019, before inflation
- Average household income
- $176,807
- Median home value
- $859,900
- Jobs located here
- 1,503,962
- Daytime population
- 2,645,877Residents who don’t work, plus everyone whose job is here
Looking at a specific site in King County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the home inspectors on map listings by name and distance.
Or open the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardHome inspectors across Washington
Every Washington market ranked →The highest-scoring counties in Washington for home inspectors, numbered among those based in Washington, with King County marked.
Top counties in Washington
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1King County, WA | 76 | 60 | 0.6 | 131 | +3.1% | #25 of 415 |
| 2Kitsap County, WA | 74 | 8 | 0.7 | 103 | +2.7% | #37 of 415 |
| 3Snohomish County, WA | 73 | 17 | 0.5 | 147 | +4.9% | #43 of 415 |
| 4Whatcom County, WA | 65 | 5 | 0.5 | 130 | +3.9% | #88 of 415 |
| 5Pierce County, WA | 61 | 21 | 0.6 | 125 | +2.5% | #113 of 415 |
| 6Clark County, WA | 60 | 12 | 0.6 | 121 | +5.3% | #117 of 415 |
| 7Benton County, WA | 60 | 9 | 1.2 | 62 | +6.9% | #123 of 415 |
| 8Spokane County, WA | 58 | 13 | 0.6 | 114 | +3.2% | #132 of 415 |
| 9Yakima County, WA | 47 | 7 | 0.8 | 80 | +1.0% | #220 of 415 |
| 10Thurston County, WA | 47 | 12 | 1.0 | 71 | +2.8% | #223 of 415 |
Other business types in King County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
- Real estate40
- Real estate agents and brokers41
- Property management52
- Mortgage brokers and lenders45
- Home inspectors76
Funeral services
Questions
How many home inspectors are in King County, WA?
King County has 60 home inspectors on map listings as of September 2026. One of them (2%) is a chain location. The listings count home inspectors. Official counts show 48 businesses with payroll classed as building inspection services in 2023, down 34.2% from 2019.
How much do households in King County, WA spend on rent and homeowner costs?
About $20.7B a year, or $22,002 per household. That is 32% above the U.S. average (an index of 132, where 100 is the U.S. average). For the 60 home inspectors on map listings, housing spending per business is 31% above the U.S. figure. The spending figure is all rent and homeowner costs, a measure of housing demand, not money home inspectors take in. It is estimated from the incomes of the 941,054 households in King County and national spending patterns by income.
How does King County, WA compare with the U.S. for home inspectors?
King County has 0.6 home inspectors per 10,000 households, in line with the U.S. rate of 0.6. The index of housing spending per business is 131, where 100 is the U.S. At the national ratio of home inspectors to household spending, King County would have about 79, against 60 on map listings. There is one business with payroll in the industry for every 19,605 households, against one for every 17,237 across the U.S. The official count fell 34.2% from 2019 to 2023, against +6.5% for the U.S.
How fast is King County, WA growing?
Population estimates put King County at 2,344,939 people in 2025, up 3.1% since 2020, in step with the U.S. (+3.1%). It has 941,054 households. Median household income in King County is $124,746, 55% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 31.4%, before inflation.
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. King County scores 76 for home inspectors (high), #25 of 415 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in King County. It maps the home inspectors on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
How the score works · Top markets for home inspectors · All 56 business types in King County
Screening a site or an acquisition in King County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of King County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.