Updated: Aug 12, 2025
Location and Projects
Address
5751 PALMER WAY, SUITE #C, Carlsbad, CA, 92008
Use our bidding system to
request a quote
Ruhnau David Frederick Architect
Ruhnau David Frederick, 5751 Palmer Way, Carlsbad, CA (Employee: Joseph A. Calderon) holds a Architect license and 1 other license according to the California license board.
Their BuildZoom score of 96 ranks in the top 20% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Ruhnau David Frederick, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Ruhnau David Frederick Services
Start a project today:
Ruhnau David Frederick Contact Information
Phone Number: (760) 967-2034
Edit
Address: 5751 PALMER WAY, SUITE #C, Carlsbad, CA 92008
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Ruhnau David Frederick Carlsbad
Quality
96
80th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Ruhnau David Frederick has a BuildZoom score of 96, which places them above 80% of 336,931 contractors in California.
Activity
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Ruhnau David Frederick has worked on at least
3.0 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
|
$500k-$1mil |
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 Ruhnau David Frederick
This is a sample of this contractor's permits. Click here to access their complete permit history.
Existing 17, 690 sqft including the following items. the common areas to be updated to the current code cycle with a new 3500 lb gurney accessible elevator updated stairs and new restroom layouts. the exterior of the building to receive a new aesthetic upgrades and finishes including new exterior employee amenity area new steel and translucent panel canopy and an updated trash enclosu... see more
Valuation:
$548,390
Permit #:
BLDC-014561-2021
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
22-pub-04 phase 1 relocation of (14) 24x40 existing portable classroom building. relocation of (1) 48x40 existing portable classroom building. addition of pc ramps per pc#04-119501 for existing relocated portable classrooms. troth elementary school form dsa 810 - evaluation of access and water only phase 1
Valuation:
N/A
Permit #:
FPCBP2200374
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Troth elementary school- phase 2 form dsa 810 - evaluation of access and water
Valuation:
N/A
Permit #:
FPCBP2200373
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Fm08200012205>parking lot expansion (fire lane modified)
Valuation:
N/A
Permit #:
FPCBP2300676
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 2 new shade structures (22 x 48 and 27 x 30') at mt san jacinto college menifee valley campus
Valuation:
N/A
Permit #:
PMT18-02836
Status:
plancheck
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Fire dept access for lincoln ii south elementary school #52
Valuation:
N/A
Permit #:
F08-0279
Status:
applied
Fee:
$310
Permit Type:
N/A
Building Type:
N/A
Addition to preschool
Valuation:
N/A
Permit #:
FPP10-00433
Status:
issued
Fee:
$192
Permit Type:
Fire misc
Building Type:
N/A
Emergency access plan for new school
Valuation:
N/A
Permit #:
F07-0351
Status:
applied
Fee:
$251
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$0
Permit #:
IP12-092
Status:
APPROVED
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Room addition - bedroom air490 r-3 r 270 756 dwell490 r-3 wood 270 13689
Valuation:
$0
Permit #:
372264
Status:
FINALED
Fee:
$357
Permit Type:
N/A
Building Type:
N/A
Site plan review
Valuation:
N/A
Permit #:
FPP09-00281
Status:
issued
Fee:
$400
Permit Type:
Fire misc
Building Type:
N/A
Relocatable classroom emergency access
Valuation:
N/A
Permit #:
F04-0078
Status:
applied
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
Relocatable classroom emergency access
Valuation:
N/A
Permit #:
F04-0076
Status:
applied
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
Relocatable classroom emergency access
Valuation:
N/A
Permit #:
F04-0081
Status:
applied
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
Emergency access for relocated classrooms
Valuation:
N/A
Permit #:
F04-0101
Status:
plancheck
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
Relocatable classroom emergency access
Valuation:
N/A
Permit #:
F04-0080
Status:
applied
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
Relocatable classroom emergency access
Valuation:
N/A
Permit #:
F04-0075
Status:
applied
Fee:
$211
Permit Type:
N/A
Building Type:
N/A
Garden wall on property line (30 x 6')
Valuation:
$360
Permit #:
BXX032521
Status:
FINAL
Fee:
$142
Permit Type:
N/A
Building Type:
N/A
144 sf pation enclosure/room addition
Valuation:
$4,789
Permit #:
BAR020182
Status:
VOID
Fee:
$14
Permit Type:
N/A
Building Type:
N/A
Graffiti
Valuation:
$0
Permit #:
COG2011-09401
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
License # 965914
Aliso Viejo, CA
132
BZ Score
$580K
Avg Project
-
Projects
License # C37291
San Diego, CA
124
BZ Score
-
Avg Project
-
Projects
131
BZ Score
$20K
Avg Project
-
Projects
Ruhnau David Frederick Reviews
BuildZoom hasn't received any reviews for Ruhnau David Frederick. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Ruhnau David Frederick License info
Verified License
| License # | C20662 |
| Status | Active |
| State | California |
| Type | Architect |
- BuildZoom verified this license was active as of August 2025.
Verify this license's status for Ruhnau David Frederick at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | C6497 |
| Status | Inactive |
| State | California |
| Type | Architect |
- According to the California Architect 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 Ruhnau David Frederick at the California Architect License Board.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
18
Permits
- Building permit records show that Ruhnau David Frederick has worked on 18 permitted projects.
Ruhnau David Frederick Employees
JC
Joseph A. Calderon
RF
Ruhnau David Frederick
Owner