Updated: May 03, 2026
Location and Projects
Address
27262 REGIO, Mission Viejo, CA, 92692
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Mainline Construction
Serving Mission Viejo and surrounding Orange County communities, Mainline Construction brings 18 years of experience in residential remodeling and construction. The company specializes in home additions, kitchen remodels, and bathroom renovations, working with homeowners to transform existing spaces or expand living areas. Mainline Construction manages projects from planning and permitting through construction, emphasizing efficient scheduling and straightforward communication throughout each phase. Whether updating interiors or enlarging homes to accommodate growing families, the team delivers expertise in structural modifications, layout reconfiguration, and custom finishes. Mainline Construction has completed projects ranging from open-concept kitchen remodels to second-story room additions, consistently guiding property owners through design choices, material selection, and code compliance to ensure each remodel fits client needs and local requirements.
Mainline Construction Services
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Mainline Construction Contact Information
Phone Number: (503) 209-7123
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Address: 27262 REGIO, Mission Viejo, CA 92692
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Building Permits by Mainline Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior demolition of (e) partition walls ceilings & restrooms on 3rd floor ***vacant***
Valuation:
N/A
Permit #:
B2024-008923
Status:
applied
Fee:
$544
Permit Type:
N/A
Building Type:
N/A
Int. t. i.: construct (n) int. corridor on 2nd floor common area *** vacant *** entered by: velasquj
Valuation:
N/A
Permit #:
B2019-000273
Status:
final
Fee:
$1,778
Permit Type:
N/A
Building Type:
N/A
Mechanical. for int. ti; construct (n) int. corridor on 2nd floor common area *** vacant *** entered by: velasquj
Valuation:
N/A
Permit #:
M2019-000275
Status:
final
Fee:
$406
Permit Type:
N/A
Building Type:
N/A
Ele.c for int. ti; construct (n) int. corridor on 2nd floor common area *** vacant *** entered by: bollsd
Valuation:
N/A
Permit #:
E2019-000274
Status:
final
Fee:
$250
Permit Type:
N/A
Building Type:
N/A
Permit #bl-ti-2023-00014. relocation bathroom
Valuation:
N/A
Permit #:
BL-RV-2024-00069
Status:
complete
Fee:
$563
Permit Type:
N/A
Building Type:
N/A
Commercial and industrial plumbing
2019-06-28
Plumbing. for int. tenant improvement. to (e) 5900 sf second floor leasing area (suite 206 addressed as). (e) suite 206 to be divided into (3) units. suite 200 (3000 sf) suite 202 (1600 sf) & suite 205 (1300 sf). address assignment needed prior to issuance. *** vacant *** entered by: velasquj
Valuation:
N/A
Permit #:
P2019-002770
Status:
final
Fee:
$808
Permit Type:
N/A
Building Type:
N/A
Mechanical. for int. tenant improvement. to (e) 5900 sf second floor leasing area (suite 206 addressed as). (e) suite 206 to be divided into (3) units. suite 200 (3000 sf) suite 202 (1600 sf) & suite 205 (1300 sf). address assignment needed prior to issuance. *** vacant *** entered by: velasquj
Valuation:
N/A
Permit #:
M2019-002767
Status:
final
Fee:
$936
Permit Type:
N/A
Building Type:
N/A
Electrical. for int. tenant improvement. to (e) 5900 sf second floor leasing area (suite 206 addressed as). (e) suite 206 to be divided into (3) units. suite 200 (3000 sf) suite 202 (1600 sf) & suite 205 (1300 sf). address assignment needed prior to issuance. *** vacant *** entered by: velasquj
Valuation:
N/A
Permit #:
E2019-002769
Status:
final
Fee:
$1,414
Permit Type:
N/A
Building Type:
N/A
Int. tenant improvement. to (e) 5900 sf second floor leasing area (suite 206 addressed as). (e) suite 206 to be divided into (3) units. suite 200 (3000 sf) suite 202 (1600 sf) & suite 205 (1300 sf). address assignment needed prior to issuance. *** vacant *** entered by: velasquj
Valuation:
N/A
Permit #:
B2019-002766
Status:
final
Fee:
$3,078
Permit Type:
N/A
Building Type:
N/A
Hotdog on a stick (pc) tenant improvement restaurant ti: hot dog on a stick area: 1150 s.f. b occupancy iii-b construction type
Valuation:
$90,000
Permit #:
2016 103067 CI
Status:
filed
Fee:
N/A
Permit Type:
Restaurant
Building Type:
N/A
Divide existing office suite
Valuation:
$36,448
Permit #:
1702-203
Status:
SUBMITTED
Fee:
$933
Permit Type:
Tenant improvement
Building Type:
N/A
Demolition basement demo; removing walls and fencing to create open space
Valuation:
$4,500
Permit #:
B15-000-841
Status:
issued
Fee:
$313
Permit Type:
Value
Building Type:
N/A
Hot dog on a stick/ti
Valuation:
$96,000
Permit #:
B12-2062
Status:
final
Fee:
$2,860
Permit Type:
N/A
Building Type:
N/A
New kiosk in an enclosed shopping mall. new millwork counter tops floor finish
Valuation:
N/A
Permit #:
12016-10000-08841
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Demolish - of hot dog on stick permit
Valuation:
$10,000
Permit #:
12STP0533
Status:
EXPIRED
Fee:
$435
Permit Type:
N/A
Building Type:
N/A
Rep company services w warehousing
Valuation:
$0
Permit #:
BUS2007-04562
Status:
Active
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Restaurant ti: hot dog on a stick area: 1150 s.f. b occupancy iii-b construction type
Valuation:
$90,000
Permit #:
2016 106789 CI
Status:
expired
Fee:
N/A
Permit Type:
Restaurant
Building Type:
N/A
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Mainline Construction License info
Verified License
| License # | 855137 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, Partnership, Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Mainline Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 994268 |
| Status | Inactive |
| State | California |
| Type | General Engineering, Painting And Decorating |
| Business Type | Sole Ownership, Partnership, 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 Mainline Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 673472 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, Partnership, 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 Mainline Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
10
Permits
- Building permit records show that Mainline Construction has worked on 10 permitted projects.
Mainline Construction Employees
MC
Mario Casacchia
General Partner
MC
Mario Casacchia
General Partner
MC
Mario Casacchia, Nicholas Casacchia
Owner
NC
Nicholas Casacchia
Sole Owner
NC
Nicholas Casacchia
Owner
SW
Steve Allen Weitman
Rmo / Ceo / Pres