Registered Washington contractor, based in Gresham, OR
AIR BALANCING SPECIALTY INC
First registered in Washington on September 10, 1976
- License number
- AIRBAI*247OS
- UBI
- 409020611
- Trade
- HVAC(all hvac contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · Heating/Vent/Air-Conditioning and Refrig (HVAC/R)
- Business address
- Gresham, OR
- Phone
- (503) 230-2332
Current verification
- Found: No Attorney General complaint records found
- Review: Registration is not currently active
- Review: Registration appears to be expired
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- EXPIRED
- Effective date
- September 10, 1976
- Expiration date
- October 10, 2025
- Suspension date
- May 18, 2024
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
L&I does not publish bond records for contractors with EXPIRED status.
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 10, 2026.
Liability insurance
L&I does not publish liability insurance records for contractors with EXPIRED status.
Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced October 10, 2026.
People
Principals L&I lists for this license.
- NEFFENDORF, DALE WAYNESince September 10, 1976
- NEFFENDORF, WILLIAM GLENNSince September 10, 1976
- NEFFENDORF, DIANE VANESSASince September 19, 2011
- NEFFENDORF, SANDRA LYNNSince September 19, 2011
- NEFFENDORF, ELIZABETH AJanuary 1, 1980 to September 19, 2011
- NEFFENDORF, RONALD CJanuary 1, 1980 to September 19, 2011
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced October 10, 2026.
Attorney General complaints
No Attorney General complaint records found.
Matched on business name and city: AIR BALANCING SPECIALTY in Gresham. Complaints filed under another name or city are not included.
A complaint record does not establish that the business violated the law.
Source: Attorney General Consumer Complaints, Washington State Attorney General's Office. Last synced October 10, 2026.
Record history
Changes to this contractor's state records since we began tracking them. The state's current-status tools do not show these.
No changes recorded since our records began on October 6, 2026.
Sources
- L&I Contractor License Data - General, Washington State Department of Labor & Industries
- L&I Contractor License Data - Bond, Washington State Department of Labor & Industries
- L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries
- L&I Contractor License - Principal Data, Washington State Department of Labor & Industries
- Attorney General Consumer Complaints, Washington State Attorney General's Office
Record last synced October 7, 2026.
Check this record against the state directly on L&I's Verify a Contractor page (search by license number AIRBAI*247OS).