Updated: May 30, 2026
Location and Projects
Address
P O BOX 867, San Carlos, CA, 94070
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Trademarx Construction
Based in San Carlos, Trademarx Construction serves residential clients throughout the Peninsula, including Redwood City, Menlo Park, Palo Alto, and surrounding Bay Area communities. With 20 years of experience, the company focuses on residential remodels, additions, and custom home projects. Past work includes kitchen and bathroom renovations, accessory dwelling units, and whole-home remodels. Trademarx Construction manages all phases of construction, from design consultation through completion, and is experienced working with local architects, engineers, and permitting agencies. The company emphasizes building with modern materials and methods, tailoring each project to the homeowner’s goals and the character of the property. Trademarx Construction frequently handles upgrades to older homes, collaborating closely with clients to navigate design, permit, and construction challenges in established neighborhoods.
Trademarx Construction Services
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Trademarx Construction Contact Information
Phone Number: (650) 593-2925
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Address: P O BOX 867, San Carlos, CA 94070
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Trademarx Construction San Carlos
Quality
102
89th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Trademarx Construction has a BuildZoom score of 102, which places them above 89% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
3 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Trademarx Construction has worked on at least
7.0 projects 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
|
< $5k |
|
1 project
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
The typical size of their permits is approximately $22,500. This graph shows the distribution of these job values.
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.
Trademarx Construction Reviews
5 out of 5 stars, based on
1
review
-
By Judy D.August 17, 2022Install fan, plumbing work$2,500
Building Permits by Trademarx Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Rmdl kitchen like for like
Valuation:
$40,000
Permit #:
B25-0278
Status:
final
Fee:
$1,514
Permit Type:
Kitchen/bathroom ...
Building Type:
N/A
Convert 1 bathroom into 2 bathrooms remodel kitchen
Valuation:
$30,000
Permit #:
BLD2022-00118
Status:
final
Fee:
$1,992
Permit Type:
Bathroom remodel
Building Type:
N/A
Remodel hall bathroom
Valuation:
$20,000
Permit #:
BLD2022-00604
Status:
final
Fee:
$1,101
Permit Type:
Bathroom remodel
Building Type:
N/A
Replace master & hall bathroom tub/shower valves
Valuation:
$8,000
Permit #:
MEP2021-00581
Status:
final
Fee:
$237
Permit Type:
(plumbing) misc p...
Building Type:
N/A
Remodel bathroom (n) window & lighting
Valuation:
$25,000
Permit #:
BLD2024-00126
Status:
final
Fee:
$1,571
Permit Type:
Bathroom like for...
Building Type:
N/A
Garage: insulate led lighting 4-new windows
Valuation:
$10,000
Permit #:
BLD2024-00027
Status:
final
Fee:
$751
Permit Type:
Misc residential
Building Type:
N/A
Remodel bathroom like for like 200 mpu
Valuation:
$20,000
Permit #:
BLD2024-00412
Status:
final
Fee:
$1,697
Permit Type:
Bathroom like for...
Building Type:
N/A
Kitchen remodel
Valuation:
$25,000
Permit #:
BLD2021-00834
Status:
final
Fee:
$1,238
Permit Type:
Kitchen remodel
Building Type:
N/A
Kitchen remodel (l4l)
Valuation:
$12,000
Permit #:
BLD2021-00778
Status:
final
Fee:
$880
Permit Type:
Kitchen remodel
Building Type:
N/A
Replace window with sliding door
Valuation:
$4,000
Permit #:
BLD2023-00726
Status:
final
Fee:
$340
Permit Type:
Window replacement
Building Type:
N/A
Remodel hall & master bathroom
Valuation:
N/A
Permit #:
BLD2019-00601
Status:
final
Fee:
$931
Permit Type:
Bathroom remodel
Building Type:
N/A
Interior remodel of 2 bedrooms & 1 bathroom
Valuation:
N/A
Permit #:
BLD2019-00049
Status:
final
Fee:
$2,974
Permit Type:
Interior remodel
Building Type:
N/A
R & r 10 windows milgard tuscany white vinyl retrofit
Valuation:
N/A
Permit #:
BLDG2020-005
Status:
final
Fee:
N/A
Permit Type:
Window inserts - ...
Building Type:
N/A
507 interior remodel 228sq ft addition
Valuation:
N/A
Permit #:
BLD2017-00225
Status:
final
Fee:
$5,930
Permit Type:
Residential addition
Building Type:
N/A
560sq ft 1st story add'n 80sq ft interior remodel
Valuation:
N/A
Permit #:
BLD2014-00479
Status:
final
Fee:
$5,763
Permit Type:
Residential addition
Building Type:
N/A
Replace 4 windows size for size addition 15 new ceiling light
Valuation:
N/A
Permit #:
BLD2016-00799
Status:
final
Fee:
$196
Permit Type:
Window replacement
Building Type:
N/A
Remodel bathroom and laundry rooms at back of garage area
Valuation:
N/A
Permit #:
BLD2016-00144
Status:
final
Fee:
$1,452
Permit Type:
Interior remodel
Building Type:
N/A
Single family (alteration/repair) - kitchen & bathroom remodel (flat)
2017-01-25
Hall bathroom remodel: install (n) tile replace (e) tub toilet and vanity install (n) lighting and (n) fan no wall alterations. r1: upgrade electrical main service panel to 200amp. (issued 1/6/17)
Valuation:
$12,000
Permit #:
BD-2016-260569
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install new tankless water heater
Valuation:
N/A
Permit #:
MEP2015-00399
Status:
final
Fee:
$91
Permit Type:
(plumbing) water ...
Building Type:
N/A
Remodel 2 bathrooms
Valuation:
N/A
Permit #:
BLD2018-00238
Status:
final
Fee:
$1,072
Permit Type:
Bathroom remodel
Building Type:
N/A
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BZ Score
$16.5K
Avg Project
-
Projects
212
BZ Score
$40K
Avg Project
-
Projects
191
BZ Score
$21.2K
Avg Project
-
Projects
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Trademarx Construction License info
Verified License
| License # | 732518 |
| 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 Trademarx Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 828964 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Trademarx Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 6073285 |
| Status | Active |
| Town | Woodside |
| Type | Contractor |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of February, 2017. Check the current license status of Trademarx Construction with the The Town of Woodside, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-91794-3 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Sole Ownership |
- According to the United States Environmental Protection Agency, 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 Trademarx Construction at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-91794-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Sole Ownership |
- According to the United States Environmental Protection Agency, 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 Trademarx Construction at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
49
Permits
- Building permit records show that Trademarx Construction has worked on 49 permitted projects.
Trademarx Construction Employees
MS
Marc Stephen Smith
Sole Owner
MN
Mark Andrew Nagel
Sole Owner
TC
Trademarc Construction
Owner
Mark and his assistant were very knowledgeable, efficient, communicated easily with me and made getting my projects completed effortless. I would highly recommend Mark for any home construction. Thank you Mark!