Updated: May 31, 2026
Location and Projects
Headquarters Address
111 BERRY HILL LANE, Hendersonville, NC, 28791
Local address
P O BOX 5238, Napa, CA, 94581
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RONALD E COX DESIGNER / BUILDER Construction
Serving Napa and surrounding areas, Ronald E Cox Designer / Builder Inc specializes in residential design and construction. With 38 years of experience, the firm undertakes custom home building, remodeling, and additions. Ronald E. Cox, the principal, leads the company’s projects, bringing decades of experience to the design-build process. The firm manages projects from initial design concepts through completed construction for homeowners seeking tailored solutions for their properties. Known for navigating all phases of the construction process, Ronald E Cox Designer / Builder Inc works closely with clients to address specific project needs, site requirements, and architectural preferences. Their portfolio covers a range of residential building types, including new homes and major renovations.
RONALD E COX DESIGNER / BUILDER INC Services
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RONALD E COX DESIGNER / BUILDER INC Contact Information
Phone Number: (707) 396-9051
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Headquarters Address: 111 BERRY HILL LANE, Hendersonville, NC, 28791
Local Address: P O BOX 5238, Napa, CA 94581
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RONALD E COX DESIGNER / BUILDER INC Napa
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
RONALD E COX DESIGNER / BUILDER INC has a BuildZoom score of 105, which places them above 92% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
5 projects
|
2024 |
|
6 projects
|
2023 |
Our building permit records indicate that RONALD E COX DESIGNER / BUILDER INC has worked on at least
16.0 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 |
|
3 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that RONALD E COX DESIGNER / BUILDER INC mostly works on
new construction
and home addition
projects.
Pricing
|
4 projects
|
< $5k |
|
7 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $15,000. 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 RONALD E COX DESIGNER / BUILDER INC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Code violation - demolition of the non permitted garage cover addition to the rear of the (e) garage
Valuation:
$20,000
Permit #:
BR25-00667-DMO
Status:
final
Fee:
$1,730
Permit Type:
N/A
Building Type:
N/A
Code violation-provide anchorage for fermentation tanks and metal catwalks. repair/install existing. (partial code fees paid under expired application bc22-00102-alt at valuation of $10, 000) to finish permit under 2019 cbc. added exterior lighting at crush pad cover and addition of 2nd story interior partition walls creating 2 new offices with added code fees for $9000
Valuation:
$19,000
Permit #:
BC23-01698-ALT
Status:
final
Fee:
$3,839
Permit Type:
N/A
Building Type:
N/A
Commercial addition - adding 764 sf covered tasting patio
Valuation:
$75,000
Permit #:
BC25-00960-ADD
Status:
review to applicant
Fee:
$3,527
Permit Type:
N/A
Building Type:
N/A
Socpe of work includes new wood-framed construction of a 764 square foot outdoor covered tasting patio
Valuation:
$75,000
Permit #:
S25-00727-COM
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
3rd dwelling - legalization of 1991 replacement of pre-existing non-conforming 1932 third dwelling with full kitchen (per cln p22-00111)
Valuation:
$50,000
Permit #:
BR24-00173-RPL
Status:
final
Fee:
$5,669
Permit Type:
N/A
Building Type:
N/A
Code violation:to legalize strap down existing 2 water tanks to concrete pad a 5000 gal and a 1000 gal for domestic drinking
Valuation:
$2,500
Permit #:
BR24-00634-NEW
Status:
expired
Fee:
$2,050
Permit Type:
N/A
Building Type:
N/A
Pool house alteration: repair damage to pool house caused by a fallen tree
Valuation:
$45,000
Permit #:
BR24-00786-ALT
Status:
final
Fee:
$2,137
Permit Type:
N/A
Building Type:
N/A
Code violation: remove mini-split from pool house. install electric at hot tub. dismantle pole barn
Valuation:
$15,000
Permit #:
S24-00139-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Code violation legalization of a accessory recreation structure & pergola roof & ceiling fan
Valuation:
$31,000
Permit #:
S24-00436-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Code violation: this permit is to legalize strap down existing water tanks to concrete pad
Valuation:
$2,500
Permit #:
S24-00429-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Master bed & bathroom remodel; addition closet
Valuation:
N/A
Permit #:
B2508-0114
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Code violation- new accessory recreation structure 177sf- unconditioned
Valuation:
$30,000
Permit #:
BR24-00665-NEW
Status:
final
Fee:
$4,980
Permit Type:
N/A
Building Type:
N/A
Repair damage to pool house caused by a fallen tree
Valuation:
$45,000
Permit #:
S24-00433-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Code violation: new gazebo with outdoor kitchen and bathroom. (existing bathroom structure to be converted and addition 558 sf to create a new pool pavillion)
Valuation:
$80,000
Permit #:
BR22-01511-NEW
Status:
final
Fee:
$16,191
Permit Type:
N/A
Building Type:
N/A
Code violation: winery alteration to the electrical legalization of new electrical from the main panel to chiller
Valuation:
$1,000
Permit #:
BC24-00661-ELC
Status:
final
Fee:
$842
Permit Type:
N/A
Building Type:
N/A
New shed- 10 wide x 20 long x 10 tall
Valuation:
$20,000
Permit #:
BR25-01220-NEW
Status:
expired
Fee:
$1,083
Permit Type:
N/A
Building Type:
N/A
New shed 10 wide x 20 long x 10 tall
Valuation:
$20,000
Permit #:
S25-00996-RES
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Code violation: as built rock buttress
Valuation:
$10,000
Permit #:
B19-00558
Status:
final
Fee:
$5,215
Permit Type:
N/A
Building Type:
N/A
Main dwelling alteration - new detached deck.816sf
Valuation:
$18,000
Permit #:
BR24-01788-ALT
Status:
expired
Fee:
$950
Permit Type:
N/A
Building Type:
N/A
Code violation: as built rock buttress
Valuation:
$10,000
Permit #:
B19-00559
Status:
final
Fee:
$4,662
Permit Type:
N/A
Building Type:
N/A
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RONALD E COX DESIGNER / BUILDER INC Reviews
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RONALD E COX DESIGNER / BUILDER INC License info
Verified License
| License # | 339494 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for RONALD E COX DESIGNER / BUILDER 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 # | 512765 |
| Status | Inactive |
| State | California |
| Type | Landscaping |
| 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 RONALD E COX DESIGNER / BUILDER INC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
50
Permits
- Building permit records show that RONALD E COX DESIGNER / BUILDER INC has worked on 50 permitted projects.
RONALD E COX DESIGNER / BUILDER INC Employees
DC
Denise Louise Cox
Officer
RC
Ronald Eugene Cox
Rmo / Ceo / Pres