Updated: May 29, 2026
Location and Projects
Address
7357 ROUND HILL DR, Lancaster, CA, 93536
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Sermag Construction
Sermag Construction, 7357 Round Hill Dr, Lancaster, CA (Owned by: Carlos Ivan Serrano) holds a General Building license according to the California license board.
Their BuildZoom score of 93 ranks in the top 27% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sermag Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Sermag Construction Services
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Sermag Construction Contact Information
Phone Number: (323) 710-1229
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Address: 7357 ROUND HILL DR, Lancaster, CA 93536
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Sermag Construction Lancaster
Quality
93
73rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sermag Construction has a BuildZoom score of 93, which places them above 73% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Sermag Construction has worked on at least
1.0 project over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$100k-$250k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Convert (e) 434 sf garage and addition 315 sf to create new 749 sf adu
Valuation:
$154,070
Permit #:
BS2200454
Status:
certificate of occupancy
Fee:
N/A
Permit Type:
New construction
Building Type:
Single-family res...
Bathroom #1; change shower valve install new shower pan and new tile. bathroom #2; change shower valve install new tub and new tile
Valuation:
N/A
Permit #:
21042-20000-00494
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Construct fence (21 x 3'-4") @ south side of property; fence (26 x 3'-4") @ west side of property; and fence (21 x 3'-4") @ west side of property not shared
Valuation:
$4,000
Permit #:
BLD21-00031
Status:
complete
Fee:
$174
Permit Type:
N/A
Building Type:
N/A
(2) bathroom remodel for residential buildings (no structural changes)
Valuation:
$11,000
Permit #:
21016-20000-00665
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
New sewage ejector. ***verify combo-building permit. building permit on eplan application is for different address***
Valuation:
N/A
Permit #:
21042-10000-33564
Status:
approved
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(2) bathroom exhaust fans
Valuation:
N/A
Permit #:
21044-20000-00246
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
10 x 18'-7 patio addition to (e) garage & convert it to adu nfpa 13d sprinklers required
Valuation:
$100,000
Permit #:
20014-10000-00613
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Unit 1 - remodel condo - 2 bathroom 1 power room and replace guardrails
Valuation:
$48,000
Permit #:
BS1901340
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Manufactured hi d...
Unit 1 - remodel condo - 2 bathroom 1 power room and replace guardrails
Valuation:
$48,000
Permit #:
BS1901339
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Manufactured hi d...
Unit 1 - remodel condo - 2 bathroom 1 power room and replace guardrails
Valuation:
$48,000
Permit #:
BS1901338
Status:
final
Fee:
$24,560
Permit Type:
N/A
Building Type:
Manufactured hi d...
1_bathroom remodel for residential buildings (no structural changes). new shower pan
Valuation:
N/A
Permit #:
21016-10000-05850
Status:
approved
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Addition shower shower valve new shower pan tile relocate toilet
Valuation:
N/A
Permit #:
21042-10000-04349
Status:
approved
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Install exhaust fan
Valuation:
N/A
Permit #:
21044-10000-02192
Status:
approved
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
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Sermag Construction Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Sermag Construction License info
Verified License
| License # | 1009109 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Sermag Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
6
Permits
- Building permit records show that Sermag Construction has worked on 6 permitted projects.
Sermag Construction Employees
CS
Carlos Ivan Serrano
Owner