Updated: May 22, 2026
Location and Projects
Address
3351 S RIVERSIDE AVE, Bloomington, CA, 92316
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Retrofit Technology Construction
Commercial & Industrial HVAC & Mechanical Contractor specializing in retrofit projects.
From BuildZoom: Retrofit Technology LLC, 3351 S Riverside Ave, Bloomington, CA (Employees: Anthony Charles Grano, Grano, Anthony Charles, and Mitchell Neil Elgin) holds a Electrical, Warm Air Heating, Ventilating And Air Conditioning, General Building license and 7 other licenses according to the California license board.
Their BuildZoom score of 114 ranks in the top 2% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Retrofit Technology LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Retrofit Technology LLC Services
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Retrofit Technology LLC Contact Information
Phone Number: (909) 746-0275
Address: 3351 S RIVERSIDE AVE, Bloomington, CA 92316
Retrofit Technology LLC Bloomington
Quality
114
98th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Retrofit Technology LLC has a BuildZoom score of 114, which places them above 98% of 336,931 contractors in California.
Activity
|
14 projects
|
2025 |
|
9 projects
|
2024 |
|
12 projects
|
2023 |
Our building permit records indicate that Retrofit Technology LLC has worked on at least
35.0 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
|
4 projects
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $23,900. 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 Retrofit Technology LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
(e-plan) hyatt westlake - electrical for the removal of (2) water heaters and installation of (4) tankless water heaters
Valuation:
$100,000
Permit #:
ELE-2025-00809
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(e-plan) hyatt westlake - anchorage for the removal of (2) water heaters and installation of (4) tankless water heaters
Valuation:
$100,000
Permit #:
BLD-2025-01028
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(e-plan) hyatt westlake - plumbing for the removal of (2) water heaters and installation of (4) tankless water heaters
Valuation:
$100,000
Permit #:
PLM-2025-00347
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Eplan: install new equipment at third floor
Valuation:
$150,000
Permit #:
24016-10000-17600
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Refrigeration machinery room ventilation system. replace (2) existing chillers and purge exhaust fan within an existing refrigeration machinery room
Valuation:
N/A
Permit #:
24044-10000-08695
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Downtown: building electrical mechanical permits to remove and replace (2) rooftop air cooled chiller and (1) water cooled chiller in the mechanical room at an existing hotel. geohaz31 coastal cstzb unzoned port authority
Valuation:
$150,000
Permit #:
2336329
Status:
complete
Fee:
$3,071
Permit Type:
Add/alt tenant im...
Building Type:
N/A
[eplan] electrical for replacemnt of two (2) exisitng chiller and associated pumps
Valuation:
N/A
Permit #:
25041-10000-16845
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Water heater permit: replace (5) water heaters. operating weight of the new water heaters is 1, 825 lbs the water heaters are located on the ground floor indoors gas to gas replacement
Valuation:
$30,000
Permit #:
COM-2323343
Status:
final
Fee:
$664
Permit Type:
N/A
Building Type:
N/A
No-plan - nonresidential/multifamily - mechanical
2025-04-23
No-plan - nonresidential/multifamily - mechanical:9326/spectrum center
Valuation:
N/A
Permit #:
PMT-3349869
Status:
issued
Fee:
$204
Permit Type:
N/A
Building Type:
N/A
Online permit - commercial air conditioning replace like to like
2025-09-03
Whtc-01: commercial heat pump/hvac replace/changeout | additional details: remove and replace (1) doas unit (rtu)
Valuation:
N/A
Permit #:
00963888-WHTC
Status:
canceled
Fee:
$255
Permit Type:
N/A
Building Type:
N/A
Remove and replace (1) trane packaged rooftop air conditioner
Valuation:
$10,000
Permit #:
BCOM-25-00079
Status:
final
Fee:
$391
Permit Type:
N/A
Building Type:
N/A
Install new 250 amp subpanel for heat pump water heaters
Valuation:
$5,000
Permit #:
E25-236
Status:
final
Fee:
$171
Permit Type:
N/A
Building Type:
Dwellings
Remove and replace (1) trane intellipak unit on roof
Valuation:
$15,000
Permit #:
BS2501060
Status:
issued
Fee:
N/A
Permit Type:
Repair & maintenance
Building Type:
Medical
Downtown: building electrical mechanical permits to remove and replace (2) rooftop air cooled chiller and (1) water cooled chiller in the mechanical room at an existing hotel. geohaz31 coastal cstzb unzoned port authority
Valuation:
$150,000
Permit #:
2336329
Status:
approved
Fee:
$3,071
Permit Type:
Add/alt tenant im...
Building Type:
N/A
Eplan: remove and replace (2) double cell cooling towers
Valuation:
$225,000
Permit #:
21016-10000-18561
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Install new 250 amp subpanel for heat pump water heaters
Valuation:
N/A
Permit #:
PRE25-00787
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plan check for refrigeration machinery room
Valuation:
N/A
Permit #:
25044-10000-00098
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace existing gas water heater with electric water heater (a.o.smith chp120 heat pump) on a 80 amp breaker 120/208 volt located in the receiving area. ralphs store
Valuation:
N/A
Permit #:
PLMC-2023-00038
Status:
complete
Fee:
$83
Permit Type:
N/A
Building Type:
N/A
Remove existing failed boiler and install new
Valuation:
N/A
Permit #:
PP20250123120
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (4) water heaters
Valuation:
$20,000
Permit #:
P25-105
Status:
final
Fee:
$233
Permit Type:
N/A
Building Type:
Stores
Retrofit Technology LLC Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Retrofit Technology LLC License info
Verified License
| License # | 1109970 |
| Status | Active |
| State | California |
| Type | Electrical, Warm Air Heating, Ventilating And Air Conditioning, General Building |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Retrofit Technology LLC 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 # | 690055 |
| Status | Active |
| State | California |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of June, 2022. Check the current license status of Retrofit Technology LLC with the California Contractors State License Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CT-37575 |
| Status | Active |
| State | Hawaii |
| Type | Boiler, Hot Water Heating, And Steam Fitting Contractor, Ventilating And Air Conditioning Contractor |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of September, 2022. Check the current license status of Retrofit Technology LLC with the Hawaii Department of Commerce & Consumer Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 73785 |
| Status | Active |
| State | Nevada |
| Type | C21b - Air Conditioning |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of June, 2014. Check the current license status of Retrofit Technology LLC with the Nevada State Contractors Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 690055 |
| Status | Inactive |
| State | California |
| Type | Welding, Warm Air Heating, Ventilating And Air Conditioning, General Building, Boiler, Hot Water Heating And Steam Fitting |
| Business Type | Limited Liability Company |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Retrofit Technology LLC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0088232 |
| Status | Inactive |
| State | Nevada |
| Type | C 21 B Air Conditioning |
| Business Type | Limited Liability Company |
- According to the Nevada State Contractors Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Retrofit Technology LLC at the Nevada State Contractors Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 471747 |
| Status | Inactive |
| State | California |
| Type | Welding |
| Business Type | Limited Liability Company |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Retrofit Technology LLC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0073785 |
| Status | Inactive |
| State | Nevada |
| Type | C 21 B Air Conditioning |
| Business Type | Limited Liability Company |
- According to the Nevada State Contractors Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Retrofit Technology LLC at the Nevada State Contractors Board.
This is a sample of licensing data; click here to access a complete history.
114
BuildZoom Score
Insured
| Insurer | Safety National Casualty Corporation |
| Insured up to | $4,000,000 |
Bonded
| Bonded Agent | Suretec Insurance Company |
| Bond Value | $10,000 |
Insured
| Workers Comp Provider | Insurance Company Of The West |
174
Permits
- Building permit records show that Retrofit Technology LLC has worked on 174 permitted projects.
Retrofit Technology LLC Employees
AG
Anthony Charles Grano
Rmo / Ceo / Pres
GC
Grano, Anthony Charles
President Qualified Individual
ME
Mitchell Neil Elgin
Rme
SG
Sandra Elizabeth Grano
Deceased
SC
Steven Hart Carroll
Ceo / President