Updated: Jun 15, 2026
Location and Projects
Address
22775 LAZY Z LN, Sonora, CA, 95370
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R Duane Swanson Construction Inc
Based in Sonora, California, R Duane Swanson Construction Inc has over five decades of experience serving the Central Sierra Foothills. Since its founding in 1966, the company has built a presence in Tuolumne County and surrounding communities. Project examples include custom homes, residential additions, and remodeling projects, showcased throughout Sonora and nearby neighborhoods. The firm handles both new construction and renovation of single-family residences, drawing on extensive regional experience and local industry connections. R Duane Swanson Construction Inc works directly with homeowners and property owners to deliver projects that align with local building standards and mountain community styles. Their long-standing presence in Sonora reflects a consistent track record in the local residential construction market.
R Duane Swanson Construction Inc Services
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R Duane Swanson Construction Inc Contact Information
Phone Number: (209) 586-1052
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Address: 22775 LAZY Z LN, Sonora, CA 95370
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R Duane Swanson Construction Inc Sonora
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
R Duane Swanson Construction Inc has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2024 |
Our building permit records indicate that R Duane Swanson Construction Inc has worked on at least
1.0 project over the past 2 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
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 R Duane Swanson Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace/expand front porch remove upper deck
Valuation:
$10,612
Permit #:
B2021-02165
Status:
final
Fee:
$1,201
Permit Type:
Patio porch carport
Building Type:
N/A
Standard building permit (residential/commercial)
2024-01-19
No Description Available
Valuation:
$50,000
Permit #:
BP-23-49
Status:
issued
Fee:
N/A
Permit Type:
Deck
Building Type:
N/A
Roof damage repairs
Valuation:
N/A
Permit #:
B2021-00818
Status:
final
Fee:
$369
Permit Type:
Building. Repr/rmdl
Building Type:
N/A
New residence
Valuation:
N/A
Permit #:
B2018-01744
Status:
final
Fee:
$13,283
Permit Type:
New single family...
Building Type:
N/A
New single family dwelling
Valuation:
$356,517
Permit #:
B2015-00001
Status:
final
Fee:
$13,708
Permit Type:
New single family...
Building Type:
N/A
Tenant improvement to convert existing building into a retail/wholsale smoked salmon store - addition new interior walls prep tables and sinks - new display cases and smokers. resubmittal #1 tn 6/04/02 - response to building plan check per bill cameron. upper and lower floor plan resubmitted resubmittal #2 mjp 6/13/02 - corrections per wjc plan check revision #1 czn 3/24/05 removing s... see more
Valuation:
$20,000
Permit #:
BLD2002-00136
Status:
final
Fee:
$3,188
Permit Type:
N/A
Building Type:
N/A
Detached garage w electric-42 x 42 ft in size detached 42 ft wide by 42 ft long garage with electric
Valuation:
$62,710
Permit #:
BAS160227
Status:
PLANCK
Fee:
$1,667
Permit Type:
N/A
Building Type:
N/A
Greater north park combo permit for addition to 1st floor & garage & addition 2nd story master bedroom & bathroom to extg sdu. rs-1-7/300 brush zone buffer/transit area/faa part 77. ct#10
Valuation:
$63,327
Permit #:
476202
Status:
complete
Fee:
$868
Permit Type:
Add/alt 1 or 2 fa...
Building Type:
N/A
Remove and replace exterior stairs
Valuation:
N/A
Permit #:
B2018-00434
Status:
final
Fee:
$422
Permit Type:
Decks
Building Type:
N/A
Electrical riser repair roof storm damage repair
Valuation:
N/A
Permit #:
B2017-00343
Status:
final
Fee:
$278
Permit Type:
N/A
Building Type:
N/A
Renew permit pp20141002627
Valuation:
$0
Permit #:
PP20160111923
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Deck replacement
Valuation:
$38,957
Permit #:
B2021-01471
Status:
final
Fee:
$1,029
Permit Type:
Decks
Building Type:
N/A
Replacing electrical meter box ** need smoke detector & carbon monoxide certificate**
Valuation:
N/A
Permit #:
BLD-2017-0161
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Designer cert grading for fumigation pad at ex nursery
Valuation:
N/A
Permit #:
K201907932
Status:
issued
Fee:
$163
Permit Type:
N/A
Building Type:
N/A
Addition foundation and repair existing area
Valuation:
$15,000
Permit #:
B2015-00417
Status:
final
Fee:
$207
Permit Type:
Building. Repr/rmdl
Building Type:
N/A
Remove piers install 43 concrete foundation
Valuation:
$8,500
Permit #:
B2015-00882
Status:
final
Fee:
$243
Permit Type:
Building. Repr/rmdl
Building Type:
N/A
Engineered grading for shower addition to gymnasium accy to ex almond production facility
Valuation:
N/A
Permit #:
K201908321
Status:
final
Fee:
$222
Permit Type:
N/A
Building Type:
N/A
Remove and replace deck
Valuation:
$21,528
Permit #:
B2016-00380
Status:
final
Fee:
$501
Permit Type:
Decks
Building Type:
N/A
Sabre springs . rs-1-14 . combination building permit for 41sf loft addition to existing single family residence built in 2003. owner: frank darbe & eva brzeziski***plan change new steel beam to be installed where a psl beam had been previously specificed (raming plans & details)7/14/09 ids***
Valuation:
$2,000
Permit #:
664926
Status:
complete
Fee:
$325
Permit Type:
Add/alt 1 or 2 fa...
Building Type:
N/A
Permit for city standard retaining wall - permit for city standard retaining wall 53 ft total of retaining wall max 5 ft high may finish with brick rock or stucco veneer
Valuation:
N/A
Permit #:
BLD13-000751
Status:
final
Fee:
$186
Permit Type:
S-fam residential
Building Type:
N/A
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R Duane Swanson Construction Inc License info
Verified License
| License # | 602366 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for R Duane Swanson Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 538637 |
| 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 R Duane Swanson Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
92
Permits
- Building permit records show that R Duane Swanson Construction Inc has worked on 92 permitted projects.
R Duane Swanson Construction Inc Employees
RS
Ronald Duane Swanson
Rmo / Ceo / Pres
SS
Susan Barbara Swanson
Officer