Updated: Apr 12, 2026
Location and Projects
Address
839 WILMORE AVENUE, Concord, CA, 94518
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Gallwitz Construction Corporation
Gallwitz Construction Corporation, 839 Wilmore Ave, Concord, CA (Employee: Max Aldo Gallwitz) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 92 ranks in the top 32% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Gallwitz Construction Corporation, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Gallwitz Construction Corporation Services
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Gallwitz Construction Corporation Contact Information
Phone Number: (925) 354-0438
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Address: 839 WILMORE AVENUE, Concord, CA 94518
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Building Permits by Gallwitz Construction Corporation
This is a sample of this contractor's permits. Click here to access their complete permit history.
Re-tile master bathroom & hall bathroom. adding new mixer valve @ shower faucets new trim baseboard & casing new kitchen cabinets addition 3 of 1/2 gas line (need to relocate valve into cabinet). move refrigerator cooktop oven dishwasher to new location. bring electrical in hall master bathrooms and kitchen up to code. sub panel upgrade to accommodate new bathroom & kitchen circuits o... see more
Valuation:
$32,000
Permit #:
B192929
Status:
final
Fee:
$1,244
Permit Type:
N/A
Building Type:
N/A
Re-tile master bathroom and hall bathroom adding new mixer valve at showers new trim-baseboards & door casing. frame in wall & addition closet to make 4th bedroom (will now be a 4bd/2ba). open (2) 30 doorways to 16 w 4x10 paralam. new kitchen cabinets addition 14 gas line to convert to electric cooktop to gas. move refrigerator & dishwasher to new location in kitchen
Valuation:
$25,000
Permit #:
B191764
Status:
final
Fee:
$967
Permit Type:
N/A
Building Type:
N/A
Remodel master & hall bathrooms addition interior wall in master bedroom to create a walk-in closet whole house rewire with 125a subpanel upgrade install led recessed lights in the living room & master bedroom install new interior doors & trim replace damaged siding at exterior of house
Valuation:
$20,000
Permit #:
B193590
Status:
final
Fee:
$783
Permit Type:
N/A
Building Type:
N/A
Remodel baths and kitchen br20021: addendum & added valuation. removal of load bearing wall & 4x12 psl beam installed in place of wall
Valuation:
$49,990
Permit #:
B200301
Status:
final
Fee:
$2,073
Permit Type:
N/A
Building Type:
N/A
226 sf addition
Valuation:
$20,000
Permit #:
RESBLD19-0166
Status:
expired
Fee:
$1,344
Permit Type:
Addition
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Gallwitz Construction Corporation License info
Verified License
| License # | 1144789 |
| Status | Active |
| State | California |
| Type | General Building |
| Date Issued | 10-09-2025 |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Gallwitz Construction Corporation at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1052854 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Gallwitz Construction Corporation at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Gallwitz Construction Corporation Employees
MG
Max Aldo Gallwitz
Rmo / Ceo / Pres