Updated: Jun 23, 2026
Location and Projects
Address
6884 S Ulster Cir, Centennial, CO, 80112
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Castaldy Electrical Services
Castaldy Electrical Services, 6884 S Ulster Cir, Centennial, CO (Employees: Castaldy Electrical Services, Llc, Timothy Castaldy, and Timothy J Castaldy) holds a Electrical Contractor license and 11 other licenses according to the Colorado license board.
Their BuildZoom score of 97 ranks in the top 18% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Castaldy Electrical Services, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Castaldy Electrical Services Contact Information
Phone Number: (303) 217-0363
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Address: 6884 S Ulster Cir, Centennial, CO 80112
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Castaldy Electrical Services Centennial
Quality
97
82nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Castaldy Electrical Services has a BuildZoom score of 97, which places them above 82% of 55,949 contractors in Colorado.
Activity
|
2 projects
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that Castaldy Electrical Services has worked on at least
3.0 projects 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.
Experience
|
3 projects
|
Electrical projects |
Analyzing permits over the last 4 years shows that Castaldy Electrical Services mostly works on
electrical project
projects.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$100k-$250k |
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 Castaldy Electrical Services
This is a sample of this contractor's permits. Click here to access their complete permit history.
The scope of work associated with this project is as follows: 1) relocation of an existing united airlines electronic ground support equipment (egse) charger and the addition of subunits to all existing egse chargers. 2) all electrical infrastructure and equipment are existing except the subunits. there will be no change in load to the existing service feeding this equipment. it is an... see more
Valuation:
$210,000
Permit #:
2024-LOG-0002118
Status:
approved
Fee:
$693
Permit Type:
N/A
Building Type:
N/A
Utility interactive 6.5kw dc stc photovoltaic array on house roof. 20 module array is flush mounted on one west facing roof section. microinverters mounted under the photovoltaic modules to rails at roof. system air conditioning combiner is mounted at house exterior adjacent to service meter and mdp. photovoltaic system electrical interconnection at mdp supply side connection
Valuation:
$17,500
Permit #:
2020-ELEC-0005526
Status:
final
Fee:
$163
Permit Type:
N/A
Building Type:
Duplex
Grid-tie 7.7kw dc photovoltaic array on existing house roof. 20 module array is flush mounted on the east roof slope. dc optimizers mounted under the photovoltaic modules to module frames at roof. system inverter is mounted at the house exterior at the south side. photovoltaic inverter is interconnected at adjacent exterior mdp through a breaker connection
Valuation:
$15,000
Permit #:
2019-ELEC-0002467
Status:
final
Fee:
$139
Permit Type:
N/A
Building Type:
Single family res...
Install a 3.72kw grid-tied photovoltaic system totaling (12) silfab sla 310 m modules with (12) enphase energy iq7-60-2-us micro-inverters. the modules shall be flush mounted on the asphalt/comp. shingle roof and interconnectred via load side circuit breaker connection to the existing electrical service
Valuation:
$11,000
Permit #:
2019-ELEC-0001587
Status:
final
Fee:
$107
Permit Type:
N/A
Building Type:
Single family res...
We are changing the plan set to show a 40a breaker interconnection instead of a 30a breaker interconnection to reflect the as built condition. existing permit 2020-elec-0011799 2020-log-0009975
Valuation:
N/A
Permit #:
2020-ELEC-0012351
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family res...
Single family residence - install utility interactive photovoltaic system. photovoltaic array flush mounted on roof. electrical intertie at backfed breaker in house mdp adjacent service meter
Valuation:
$13,500
Permit #:
2020-ELEC-0007280
Status:
final
Fee:
$131
Permit Type:
N/A
Building Type:
N/A
Single family residence - install utility interactive photovoltaic system. photovoltaic array flush mounted on roof. electrical intertie at backfed breaker in house mdp adjacent service meter
Valuation:
$13,500
Permit #:
2020-LOG-0004837
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Grid-tied 10.56kw photovoltaic array drawing change. this permit is being pulled to resubmit modified drawings for 2019-log-0006466. we are not able to resubmit via the attachments page
Valuation:
$500
Permit #:
2020-ELEC-0004650
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
Single family res...
The 200 amp panel that was installed on the home needed to be upgraded to a 225a bussed panel to handle the additional solar load. meter/main combo unit was replaced
Valuation:
$450
Permit #:
2020-ELEC-0002743
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
Single family res...
3766 n williams st - single family residence 6.570kw photovoltaic system install flush mounted solar panels on roof and interconnect at mdp
Valuation:
$22,100
Permit #:
2020-ELEC-0010954
Status:
final
Fee:
$50
Permit Type:
N/A
Building Type:
N/A
Install roof mounted solar panels - photovoltaic - electrical interconnect at service panel. this is a single family residence
Valuation:
$12,750
Permit #:
2020-ELEC-0007334
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Existing 125a panel was upgraded to a 200a panel-board to accommodate new solar array. all branch circuit loads remain unchanged
Valuation:
$500
Permit #:
2020-ELEC-0002016
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
Single family res...
9.855kw roof mounted grid-tied photovoltaic array mounted on existing roof
Valuation:
$27,750
Permit #:
RES-20-01240
Status:
complete
Fee:
$882
Permit Type:
N/A
Building Type:
N/A
Removal and replacement of existing rooftop solar panels to allow for re-roof. replaced as per original
Valuation:
$5,640
Permit #:
2020-ELEC-0003569
Status:
final
Fee:
$67
Permit Type:
N/A
Building Type:
Single family res...
Install solar panels flush to roof and intertie utility interactive inverters at msp
Valuation:
$29,500
Permit #:
2020-LOG-0010719
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of a 5.12kw grid-tied photovoltaic system mounted on roof of existing house
Valuation:
$16,000
Permit #:
2020-LOG-0008856
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
5.12kw grid tied photovoltaic system installation. roof mounted on existing structure
Valuation:
$16,000
Permit #:
2020-ELEC-0010538
Status:
issued
Fee:
$147
Permit Type:
N/A
Building Type:
Single family res...
Installation of a 5.12kw grid-tied photovoltaic system mounted on roof of existing house
Valuation:
$4,000
Permit #:
2020-ELEC-0010815
Status:
final
Fee:
$50
Permit Type:
N/A
Building Type:
Single family res...
Install solar panels flush mounted on roof and intertie to electric service at msp
Valuation:
$21,000
Permit #:
2020-ELEC-0008920
Status:
final
Fee:
$50
Permit Type:
N/A
Building Type:
N/A
Install solar panels flush mounted on roof and intertie to electric service at msp
Valuation:
$21,000
Permit #:
2020-LOG-0006778
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Castaldy Electrical Services License info
Verified License
| License # | 101326 |
| Status | Active |
| State | Colorado |
| Type | Electrical Contractor |
| Date Issued | 07-11-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Castaldy Electrical Services at the Colorado Division of Professions and Occupations.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 601153 |
| Status | Active |
| State | Colorado |
| Type | Electrician |
- When BuildZoom last verified this license, it had an expiration date of September, 2020. Check the current license status of Castaldy Electrical Services with the Colorado Division of Professions and Occupations
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| City | Denver |
| Type | Electrical |
- BuildZoom verified this license was active as of June 2026.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 601153 |
| Status | Active |
| State | Colorado |
| Type | Electrician |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Castaldy Electrical Services at the Colorado Division of Professions and Occupations.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | ELC1672719 |
| Status | Active |
| City | Lafayette |
| Type | Electrical Contractor |
- When BuildZoom last verified this license, it had an expiration date of October, 2020. Check the current license status of Castaldy Electrical Services with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| City | Denver |
- When BuildZoom last verified this license, it had an expiration date of October, 2020. Check the current license status of Castaldy Electrical Services with the City and County of Denver Community Planning and Development
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | AEC8194 |
| Status | Inactive |
| City | Arvada |
| Type | Contractor |
- According to the The City of Arvada, Colorado, 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 Castaldy Electrical Services at the The City of Arvada, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 101326 |
| Status | Inactive |
| State | Colorado |
| Type | Electrical Contractor |
- According to the Colorado Division of Professions and Occupations, 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 Castaldy Electrical Services at the Colorado Division of Professions and Occupations.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1902339 |
| Status | Inactive |
| City | Westminster |
| Type | Electrical Contractor |
- According to the City of Westminster, Colorado, 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 Castaldy Electrical Services at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1902340 |
| Status | Inactive |
| City | Westminster |
| Type | General Contractor |
- According to the City of Westminster, Colorado, 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 Castaldy Electrical Services at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | E190268 |
| Status | Inactive |
| County | Douglas County |
| Type | Electrical |
- According to the Douglas County Building Division, 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 Castaldy Electrical Services at the Douglas County Building Division.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LCC201801314 |
| Status | Inactive |
| City | Thornton |
| Type | Class D Electrical |
- According to the Thornton City Development Contractor License, 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 Castaldy Electrical Services at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
59
Permits
- Building permit records show that Castaldy Electrical Services has worked on 59 permitted projects.
Castaldy Electrical Services Employees
CL
Castaldy Electrical Services, Llc
TC
Timothy Castaldy
TC
Timothy J Castaldy