Updated: Jul 31, 2026
Location and Projects
Address
1495 NICHOLS DR, Rocklin, CA, 95765
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Robert S Nelson Mechanical Engineer and Contractor
Robert S Nelson Mechanical Engineer and Contractor, 1495 Nichols Dr, Rocklin, CA (Owned by: Robert Sheldon Nelson) holds a Mechanical A license and 3 other licenses according to the Douglas County license board.
Their BuildZoom score of 95 ranks in the top 22% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Robert S Nelson Mechanical Engineer and Contractor, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Robert S Nelson Mechanical Engineer and Contractor Services
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Robert S Nelson Mechanical Engineer and Contractor Contact Information
Phone Number: (916) 408-6600
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Address: 1495 NICHOLS DR, Rocklin, CA 95765
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Building Permits by Robert S Nelson Mechanical Engineer and Contractor
This is a sample of this contractor's permits. Click here to access their complete permit history.
Commercial: limited review (electrical mechanical plumbing reroof etc)
2018-03-05
Demolish 5 existing make up air units and replace 5 air condition units
Valuation:
$361,240
Permit #:
BLD18-00788
Status:
complete
Fee:
$960
Permit Type:
Alteration
Building Type:
N/A
Commercial: full review - new structures tenant improvements and accessories
2012-06-27
Tenant: gilbert dental offices suites 100 & 300 b (medical office) = 3, 989 sqft cov entry = 50 sqft rear cov porch trellis = 316 sqft const type v-b w sprinklers *see comment notes for special instructions
Valuation:
$175,072
Permit #:
0200 46546.12
Status:
final
Fee:
$3,333
Permit Type:
N/A
Building Type:
N/A
Replace existing roof top hvac unit #2 with new unit. replace existing electrical circuit and conduit. modify roof framing per engineer's plan. - for jack in the box
Valuation:
N/A
Permit #:
BLD2010-00348
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Complete hvac design building and installation (for new office and breakroom t.i.) c/s leckron rd
Valuation:
N/A
Permit #:
BLD2018-1400
Status:
final
Fee:
$165
Permit Type:
New
Building Type:
N/A
Replace (3) (e) rooftop hvac units - (on-line submittal) occ designation change (occ designation changed from a-3 per 1989 permit to a-2 per 2007cbc)
Valuation:
$26,250
Permit #:
BLD2010-22428
Status:
final
Fee:
$1,003
Permit Type:
N/A
Building Type:
N/A
Replacement of existing hvac unit on roof top weighing 1, 355 lbs
Valuation:
$15,000
Permit #:
2010 022567 CI
Status:
final
Fee:
N/A
Permit Type:
Restaurant
Building Type:
N/A
Replace existing furnace with new 95% fau in same location
Valuation:
N/A
Permit #:
RM0802059
Status:
final
Fee:
$151
Permit Type:
N/A
Building Type:
N/A
Replace 2 roof top hvac units (jack in the box)
Valuation:
$30,000
Permit #:
CM10019
Status:
final
Fee:
$354
Permit Type:
Miscellaneous
Building Type:
N/A
Building/facilities permit program/remodel/retail store
2009-04-30
No Description Available
Valuation:
$441,294
Permit #:
COM-0904486
Status:
Finaled
Fee:
$4,977
Permit Type:
N/A
Building Type:
N/A
Fpp: remove and replace 7 roofmount air conditioning units (like for like) tac 6 7 8 9 & 27 mac 5 & 6
Valuation:
$536,356
Permit #:
COM-1002088
Status:
final
Fee:
$5,926
Permit Type:
N/A
Building Type:
N/A
Replacement of existing hvac unit on roof top weighing 1, 355 lbs
Valuation:
$15,000
Permit #:
2010 018843 CI
Status:
complete
Fee:
N/A
Permit Type:
Restaurant
Building Type:
N/A
Replace hvac unit
Valuation:
N/A
Permit #:
BI341537
Status:
final
Fee:
$117
Permit Type:
N/A
Building Type:
N/A
Relocate gas outlet
Valuation:
$200
Permit #:
P92-0005
Status:
final
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
Mech-replace furnace
Valuation:
$1,000
Permit #:
P92-0006
Status:
final
Fee:
$41
Permit Type:
N/A
Building Type:
N/A
Replacement of existing hvac unit on roof top weighing 1, 355 lbs
Valuation:
$30,000
Permit #:
2010 018872 CI
Status:
expired
Fee:
N/A
Permit Type:
Restaurant
Building Type:
N/A
Remove hvac and replace with new one on roof top same location. lighter weight and smaller unit. strengthen supports (fully screened)
Valuation:
N/A
Permit #:
BLD2010-00575
Status:
expired
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Replace hvac unit
Valuation:
N/A
Permit #:
BI341536
Status:
withdrawn
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Fpp: replace three existing air conditioning units with new like for like. tac-25 & 26 and fftac-2
Valuation:
$72,685
Permit #:
COM-1003200
Status:
expired
Fee:
$1,646
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Robert S Nelson Mechanical Engineer and Contractor License info
Verified License
| License # | MA060446 |
| Status | Active |
| County | Douglas County |
| Type | Mechanical A |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of August 2025.
Verify this license's status for Robert S Nelson Mechanical Engineer and Contractor at the Douglas County Building Division.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 698122 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Robert S Nelson Mechanical Engineer and Contractor at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ENGINMC772MU |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Sole Ownership |
- According to the Washington State Department of Labor & Industries, 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 Robert S Nelson Mechanical Engineer and Contractor at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 503953 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| 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 Robert S Nelson Mechanical Engineer and Contractor at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Insured
| Insurer | Middlesex Insurance Company |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Contractor's Bond History |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Insurance Company Of The West |
13
Permits
- Building permit records show that Robert S Nelson Mechanical Engineer and Contractor has worked on 13 permitted projects.
Robert S Nelson Mechanical Engineer and Contractor Employees
RJ
Rob Jensen
President
RJ
Rob Scott Jensen
Rmo / Ceo / Pres
RN
Robert Sheldon Nelson
Owner