Updated: Jun 05, 2026
Location and Projects
Address
14 BRANDY COURT, Petaluma, CA, 94954
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John B Nilsen Construction
For over three decades, John B Nilsen Construction has served Petaluma, California, and surrounding Sonoma County communities with a focus on residential construction and remodeling. The company handles kitchen and bathroom remodels, home additions, renovations, and repair work, ranging from interior updates to larger structural projects. With 34 years of experience in the building industry, John B Nilsen Construction draws on local expertise to navigate the permitting process and building codes typical of Sonoma County neighborhoods. The firm works directly with homeowners seeking to update or expand their properties, offering experience in both modern and traditional home styles. Projects are managed with attention to local construction standards and homeowner requirements, ensuring work aligns with Petaluma’s architectural and regulatory landscape.
John B Nilsen Construction Services
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John B Nilsen Construction Contact Information
Phone Number: (650) 207-1674
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Address: 14 BRANDY COURT, Petaluma, CA 94954
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John B Nilsen Construction Petaluma
Quality
104
91st percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
John B Nilsen Construction has a BuildZoom score of 104, which places them above 91% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
4 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that John B Nilsen Construction has worked on at least
10.0 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.
Experience
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that John B Nilsen Construction mostly works on
home addition
projects.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
The typical size of their permits is approximately $25,750. 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.
Building Permits by John B Nilsen Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
This proposal includes the construction of a new detached a.d.u. with with749 sq.ft of living space and an attached 283.5 sq.ft. garage. the adu is to bebuilt in the rear side yard of an existing 2 story home in accordance withgovt. code 65852.150. included in this project is a new driveway to service the new garage and the demolition of various flat work and fences on site
Valuation:
$250,000
Permit #:
BLDR-2022-0209
Status:
complete
Fee:
$8,238
Permit Type:
N/A
Building Type:
N/A
(n) jadu in (e) garage 301 sqft converted out of (e) 785 sq ft
Valuation:
$26,500
Permit #:
B2024-2889
Status:
final
Fee:
$2,360
Permit Type:
Attach garage to ...
Building Type:
N/A
New adu (garage conversion) - tan residence - 1321 dogwood dr - existing 489 sf garage to be converted to an new 489 sf adu
Valuation:
$25,000
Permit #:
B23-5668
Status:
final
Fee:
$2,439
Permit Type:
N/A
Building Type:
N/A
Single family dwelling kitchen remodel non structural
Valuation:
$35,000
Permit #:
B2508-066
Status:
issued
Fee:
$2,296
Permit Type:
Alter-sfd
Building Type:
N/A
Repair deck/covered porch in-kind 352 sf due to rot damage to (e) deck replace (e) joists in-kind
Valuation:
N/A
Permit #:
BLD23-5881
Status:
issued
Fee:
$516
Permit Type:
N/A
Building Type:
N/A
Expand & remodel kitchen; vault ceiling in kitchen & living room k f d k s d
Valuation:
$68,500
Permit #:
170857
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
New decks w/stairs; addition storage structural door & firepklace
Valuation:
$150,000
Permit #:
169973
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Addition 50 sf of deck to existing within allowable building envelope at rear
Valuation:
$15,000
Permit #:
202410032259
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Interior kitchen renovation 268sf: remove portion of structural wall install new cabinets stone counters appliances & light fixtures
Valuation:
N/A
Permit #:
BLD21-2017
Status:
issued
Fee:
$1,695
Permit Type:
N/A
Building Type:
N/A
In-kind replace rotted wood hand rail & deck boards. no structural work post & framing already pressure treated. less than 50%
Valuation:
$12,000
Permit #:
202405222730
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Legalize existing 500 sq ft junior adu. adding dishwasher and cooking equipment including gas range and exhause hood
Valuation:
N/A
Permit #:
BIAL21-000171
Status:
final
Fee:
$563
Permit Type:
N/A
Building Type:
N/A
Convert 154 sf 2nd floor deck to new sitting room
Valuation:
N/A
Permit #:
BD2303-0025
Status:
final
Fee:
$6,900
Permit Type:
N/A
Building Type:
N/A
R/r 2 windows addition new kitchen window with header
Valuation:
N/A
Permit #:
20220314
Status:
final
Fee:
$796
Permit Type:
Residential repla...
Building Type:
N/A
For single family dwelling - replace (e) 2 doors with new marvin sliding glass door - remove (e) zero clearance fireplace & relocate to family room - gas line to run under house at family room area
Valuation:
N/A
Permit #:
BLD17-5144
Status:
final
Fee:
$1,541
Permit Type:
N/A
Building Type:
N/A
102 s.f. addition to (e) adu under construction (permit bldg-15-0782. adding direct vent fireplace
Valuation:
$7,500
Permit #:
BLDG-21-2193
Status:
issued
Fee:
$1,115
Permit Type:
N/A
Building Type:
N/A
Demolish house shed temp power pole j #asb112928
Valuation:
$18,250
Permit #:
165032
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Demolish house shed temp power pole j #asb112928
Valuation:
$18,250
Permit #:
135032
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Encroachment - sidewalk sewer water monitoring wells misc
2022-12-08
New driveway apron
Valuation:
N/A
Permit #:
PWEP-2022-0482
Status:
complete
Fee:
$620
Permit Type:
N/A
Building Type:
N/A
2017 complex fire rebuild installation of back-up generator evt17-00933
Valuation:
N/A
Permit #:
BLD17-5614
Status:
expired
Fee:
$83
Permit Type:
N/A
Building Type:
N/A
2017 complex fire rebuild. run propane to back-up generator evt17-00933
Valuation:
N/A
Permit #:
BLD17-5616
Status:
expired
Fee:
$83
Permit Type:
N/A
Building Type:
N/A
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BZ Score
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BZ Score
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Avg Project
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Projects
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Projects
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Verified License
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John B Nilsen Construction License info
Verified License
| License # | 441550 |
| 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 John B Nilsen 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 # | 636449 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for John B Nilsen 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 # | 626449 |
| Status | Active |
| City | San Carlos |
| Type | Contractor |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of January, 2018. Check the current license status of John B Nilsen Construction with the The City of San Carlos, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 636449 |
| Status | Inactive |
| City | Butte County |
| Type | Contractor |
| Business Type | Sole Ownership |
- According to the Butte County, CA, 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 John B Nilsen Construction at the Butte County, CA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-68900-3 |
| 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 John B Nilsen 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-F163512-1 |
| 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 John B Nilsen 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-68900-2 |
| 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 John B Nilsen 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 # | 454089 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- 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 John B Nilsen 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 # | 450593 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- 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 John B Nilsen Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest National Insurance Company |
95
Permits
- Building permit records show that John B Nilsen Construction has worked on 95 permitted projects.
John B Nilsen Construction Employees
CN
Chris David Nilsen
Sole Owner
JC
John B Nilsen Construction
Owner
JN
John Bert Nilsen
Owner
RN
Raymond Carl Nilsen
Sole Owner
WN
Wilhelm Wulf Nilsen
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