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Spokane Acoustics Inc.

WA + ID, registered in both statesEst. 1982
(509) 927-8150

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Credentials & honors

Insulation, soundproofing and interior finish carpentry are the work at Spokane Acoustics Inc., a Spokane Valley contractor that has spent decades on schools, state buildings and other public and commercial spaces around Spokane. The business traces back to 1982, when it first operated as Spokane Acoustics, and it holds contractor registrations in both Washington and Idaho, so it can work either side of the state line.

The state insures this business under workers'-comp classes for insulation and soundproofing installation and for interior finish carpentry, alongside estimating and office staff. Its public-works filings run from 2002 to 2026, mostly as a subcontractor, for Washington's Department of Enterprise Services, Spokane, Mead, Central Valley and Cheney school districts, Washington State University, the City of Spokane, Spokane County and the Spokane Valley Fire Department. The state lists Ann, William and Jonathan Gotfredson as principals, the earliest since 1980. The crew runs four to six people. That record points to institutional and commercial interiors: acoustical work in classrooms and offices, insulation in public buildings, finish carpentry on prevailing-wage jobs where a general contractor needs a sub who knows the paperwork. Spokane Acoustics works mostly through repeat general contractors and referrals. It is an insulation and finish shop, not a framing outfit, so a new house going up from the slab would start with someone else. Spokane's building stock runs from early twentieth-century brick schools and plaster-walled homes to recent tract construction in Liberty Lake and the Valley, and insulation and sound control look different across that range. Older buildings often hide thin or settled insulation in walls and attics, and quieting a room may mean working around plaster, irregular framing and old ductwork. Newer buildings tend to have consistent cavities but thinner walls that carry sound. Ask any insulation or acoustical contractor what they expect to find behind the surface before the job is priced.

WA L&I registration verified October 1, 2026 · see the state record

WA L&I registration
Registration number
SPOKAAI153OS
Registered as
SPOKANE ACOUSTICS INC
Registration checked
October 1, 2026
Registered since
1985
Expires
April 2027
Also registered in Idaho
RCE-7736
Contractor bond
$15,000 · Contractors Bonding & Insurance Co
Liability insurance
$1,000,000 · Cincinnati Ins Co
Insurance through
December 2028
Check it on the state record
Listed services
01
Insulation and soundproofing installation
02
Interior finish carpentry

Ask Spokane Acoustics Inc. which of these their own crew handles.

The record

The details on Spokane Acoustics Inc

WA L&I registration
SPOKAAI153OS
Idaho registration
RCE-7736
Registered as
SPOKANE ACOUSTICS INC
Registration checked
October 1, 2026
Registered since
1985
Expires
April 2027
Contractor bond
$15,000 · Contractors Bonding & Insurance Co
Liability insurance
$1,000,000 · Cincinnati Ins Co
Insurance through
December 2028
Established
1982
Primary trade
General Contractor
L&I specialty
Insulation and Acoustical
Registered principal
Ann Gotfredson · since 1980
Registered principal
William Gotfredson · since 1985
Registered principal
Jonathan Gotfredson · since 2015
Based in
Spokane Valley

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Before you call

Questions worth asking Spokane Acoustics Inc

Is Spokane Acoustics Inc. licensed in Washington?

Registration SPOKAAI153OS is the one to check, and it expires April 2027. It is Spokane Acoustics Inc.'s, filed with Washington State L&I. They are also registered in Idaho (RCE-7736), so Coeur d'Alene-side work is covered too. That was current on the state record as of October 1, 2026 — the link on this page goes to the record itself. L&I also lists a $15,000 contractor bond (Contractors Bonding & Insurance Co) and $1,000,000 of liability insurance with Cincinnati Ins Co through December 2028. Ask them to send the bond and insurance certificates over before the first day on site.

What does Spokane Acoustics Inc. do?

Their general contractor list runs to Insulation and soundproofing installation, Interior finish carpentry. Worth asking which parts the crew does itself and which go to a sub.

Who calls from 509-927-8150?

Spokane Acoustics Inc., a general contractor based in Spokane Valley. (509) 927-8150 is the number on their listing. Calling back about a quote? Get it in writing before anyone starts.

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