Looking for a home inspector in Black Diamond, WA? Describe your project once and up to three licensed home inspectors who work in Black Diamond and King County get back to you with a quote. It's free and there is no obligation.
Black Diamond is home to about 6,787 people (2024 Census Bureau estimate), a growing community (+44.6% since 2020). With 1,029 people per sq mi, it is a semi-rural area. Buyers here usually have a short inspection period, so booking a local inspector quickly matters.
Black Diamond at a glance
- Population (Census Bureau estimate, 2024)
- 6,787 (+44.6% since 2020)
- Rank in Washington
- 112th of 281 cities and towns
- Land area
- 6.6 sq mi
- Population density
- 1,029 people per sq mi (semi-rural)
- Type
- City (Black Diamond city)
- Main county
- King County
What to check before hiring in Black Diamond
- License: in Washington, check whether home inspectors are licensed by the state and ask for the number.
- Add-ons: ask about radon, sewer scope, termite (WDO) or septic inspections in the same visit.
- Price drivers: size and age of the home, crawl space or attic access, and add-ons.
- Report: ask for a sample report before you book.
Useful official resources
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ASHI: American Society of Home Inspectors
Official information and guidance.
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InterNACHI
Official information and guidance.
Services available in Black Diamond
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Home inspection for a purchase
General inspection of the home during the buyer's inspection period, with a written report.
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Pre-listing inspection
Inspection ordered by the seller before listing, to fix or disclose issues early.
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New construction or warranty inspection
Phase inspections during construction or before the builder's one-year warranty ends.
Frequently asked questions in Black Diamond
How much does a home inspection cost in Black Diamond, WA?
It depends on the size and age of the home and the add-ons. Describe the home: inspectors who serve Black Diamond reply with a quote.
How long does it take?
Often two to four hours on site, with the report within a day or two.
Can I attend the inspection?
Yes, and it is recommended: the inspector can show you what they found.
Which licensed home inspectors will contact me?
Up to three independent licensed home inspectors who serve Black Diamond and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.