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Mgp Construction: CSLB License #510978
Source: CSLB public data · Updated November 1, 2026 · CSLB's record
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The license is active with no suspension on record, though classifications, bonds and secondary flags still deserve a look.
License details
- License number
- 510978
- Primary status
- CLEAR · what this means
- Business type
- Sole Owner
- Full business name
- Michael Gregory Porteous DBA Mgp Construction
- Issued
- May 19, 1987 (39 years)
- Expires
- April 30, 2027
- Reactivated
- April 13, 1993
- Classifications
- A General Engineering Contractor
B General Building Contractor
C-10 Electrical Contractor
C-36 Plumbing Contractor
C-46 Solar Contractor - Location
- Upland, 91785
- Phone
- (909) 982-2364
This is a sole-owner license, so we show only the city and ZIP code.
Workers' compensation
- Type
- Workers' Compensation Insurance
- Insurer
- State Compensation Insurance Fund
- Policy number
- 1423438
- Effective
- May 1, 1997
- Expires
- May 1, 2027
Confirm coverage with CSLB's insurer search. How to check workers' comp.
Contractor's bond
- Surety
- American Contractors Indemnity Company
- Bond number
- 101056983
- Amount
- $25,000
- Effective
- April 15, 2026
Status history
No changes recorded since we began tracking this license on November 1, 2026. We compare every weekly CSLB file and log changes to status, bonds, workers' comp and classifications here.
Related
- Licensed general engineering contractors in Upland
- Licensed general contractors in Upland
- Licensed electricians in Upland
- Licensed plumbers in Upland
- Licensed contractors in Upland
- Contractors in San Bernardino County
- What "CLEAR" means
- How to check a contractor license
Data: CSLB Public Data Portal, file dated November 1, 2026. Status can change at any time. Verify on CSLB's Instant License Check. This site is not a consumer reporting agency under the FCRA; don't use it for employment, credit, insurance or housing decisions about an individual.