Washington contractor
MACK BROTHERS & SONS INC
Registered in Washington for 31 years
- License number
- MACKBSI055LE
- UBI
- 601385337
- Trade
- General contractor(all general contractor contractors in Washington)
- L&I license type and specialty
- CONSTRUCTION CONTRACTOR · GENERAL
- City
- LONG BEACH, WA(all contractors in Long Beach)
- Phone
- (360) 665-6410
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
- June 5, 1995
- Expiration date
- March 24, 2028
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
Current bond
- Bond company
- Travelers Cas Insurance Co of America
- Bond number
- 206086368
- Amount
- $30,000
- Effective date
- March 1, 2026
- Expiration date
- Until canceled
Bond history
- Bond company
- TRAVELERS CAS & SURETY
- Bond number
- 206086368
- Amount
- $12,000
- Effective date
- March 1, 2002
- Expiration date
- March 1, 2026
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Liability insurance
Current policy
- Carrier
- Contractors Bonding & Insuranc
- Policy number
- CKA0552227
- Coverage amount
- $1,000,000
- Effective date
- March 24, 2026
- Expiration date
- March 24, 2027
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.
- MACK, GUENTERSince January 1, 1980
- MACK, WOLFGANGSince January 1, 1980
- Mack, Alexander FlorianSince March 24, 2026
- Mack, Hannes MariusSince March 24, 2026
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: MACK BROTHERS SONS in LONG BEACH. 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 MACKBSI055LE).