Registered Washington contractor, based in PORTLAND, OR
A & A DRILLING SERVICE INC
Registered in Washington for 32 years
- License number
- AADRISI077QB
- UBI
- 600315263
- Trade
- HVAC(all hvac contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · BOILER/STEAM FIT/PROC PIPING
- Business address
- PORTLAND, OR
- Phone
- (503) 659-8583
Current verification
- Found: Active Washington contractor registration
- Found: Current bond record found
- Found: Current liability insurance record found
- Found: No Attorney General complaint records found
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- ACTIVE
- Effective date
- November 2, 1993
- Expiration date
- May 13, 2028
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
Current bond
- Bond company
- Ohio Cas Ins Co
- Bond number
- 45K004252
- Amount
- $15,000
- Effective date
- July 1, 2024
- Expiration date
- Until canceled
Bond history
- Bond company
- Ohio Cas Ins Co
- Bond number
- 45K004252
- Amount
- $6,000
- Effective date
- April 1, 2024
- Expiration date
- July 1, 2024
- Bond company
- Ohio Cas Ins Co
- Bond number
- 548232C
- Amount
- $6,000
- Effective date
- August 26, 2019
- Expiration date
- April 1, 2024
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Liability insurance
Current policy
- Carrier
- BITCO General Ins Corp
- Policy number
- CLP3765168
- Coverage amount
- $1,000,000
- Effective date
- November 9, 2025
- Expiration date
- November 9, 2026
L&I publishes only the policy currently on file. Earlier policies are kept from our own nightly syncs, which began October 6, 2026.
Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced October 9, 2026.
People
Principals L&I lists for this license.
- OSTERHOLME, DEREK BJORNSince April 11, 2024
- ANDERSON, WARREN E JRJanuary 1, 1980 to November 12, 2013
- TIGLI, ROBIN RJanuary 1, 1980 to November 12, 2013
- TIGLI, ANTHONY LORENNovember 12, 2013 to November 11, 2021
- TIGLI, ROBIN RUTHNovember 12, 2013 to April 11, 2024
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Attorney General complaints
No Attorney General complaint records found.
Matched on business name and city: A A DRILLING SERVICE in PORTLAND. 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 9, 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 AADRISI077QB).