Sammamish, WA
Surety bonds for Sammamish, WA contractors
Local construction data, public works bond rules, and what sureties ask Sammamish contractors for. A quote is not a binder.
King County is home to 6,775 construction businesses (County Business Patterns, 2023), the market in which Sammamish's 66,474 residents' projects get built. Public owners there require bonds on most construction contracts.
Contractors in King County by the numbers
| Measure (2023) | King County | Washington |
|---|---|---|
| Construction establishments (all) | 6,775 | 27,190 |
| Construction employees | 75,035 | 229,133 |
| Annual payroll per construction employee | $93,722 | $83,136 |
| Commercial and institutional building contractors | 223 | 782 |
| Heavy and civil engineering contractors | 211 | 909 |
| Construction firms with fewer than 5 employees | 66% | 68% |
Source: U.S. Census Bureau, County Business Patterns 2023: construction (NAICS 23), commercial and institutional building construction (NAICS 236220), and heavy and civil engineering construction (NAICS 237). Figures withheld by the Census Bureau are omitted.
Renovation, growth, and bonding in Sammamish
Sammamish has grown quickly; half of its housing was built after 1994. Fast-growing cities generate new schools, roads, and utilities, plus subdivision improvement bonds required before plats are approved.
Buildings with five or more units make up 11% of Sammamish's housing (Washington: 22%). Lower-density development tends to emphasize site, utility, and road work tied to subdivisions.
The Census Bureau's 2020–2024 survey puts Sammamish's housing stock at 22,610.0 units, 85% of them single-family homes, with 17% of occupied homes rented. Those numbers shape the mix of bonded street, utility, and facility contracts the city puts out.
Housing data: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024 (tables B25024, B25035). Population: U.S. Census Bureau Vintage 2024 city population estimates.
Public works bond rules that apply in Sammamish
For city, county, school district, and state contracts in Sammamish, the governing law is RCW 39.08 (contractor's bond). Federal work is bonded under the Miller Act instead. See our public works bond laws guide.
Nearby construction markets
Seattle shares King County with Sammamish; its median housing year is 1976. Sammamish's county ranks 9th of 30 profiled Washington cities for number of construction firms.
Preparing a Sammamish bond request
- Subcontractor and supplier references
- List of open jobs with costs and billings
- Legal entity details and owners
- Year-end financial statements
- Largest jobs completed in the last five years
- Personal financial information for indemnitors
Start a Sammamish bond request
Questions from Sammamish contractors
Do Sammamish public projects require performance bonds?
Generally yes, above thresholds set by Washington law and the owner. See the Washington page.
How big is the construction industry near Sammamish?
The Census Bureau counted 6,775 construction establishments in King County in 2023.
Can a small Sammamish contractor get bonded?
Often, yes. Sureties start new accounts with smaller limits and grow them with your track record; see bonding capacity.
Other bond pages near Sammamish
Bond quotes in Washington · Bond types
Last updated October 15, 2026 · How we research