Updated: Jun 23, 2026
Location and Projects
Address
1035 Havens CT, Downers Grove, IL, 60515
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Detection Systems & Service Electrician
Detection Systems & Service Inc, 1035 Havens Ct, Downers Grove, IL (Owned by: Detection Systems And Service Inc) holds a Fire Alarm Contractor Registration license and 16 other licenses according to the Palatine license board.
Their BuildZoom score of 105 ranks in the top 8% of 65,686 Illinois licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Detection Systems & Service Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Detection Systems & Service Inc Contact Information
Phone Number: (630) 231-8070
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Address: 1035 Havens CT, Downers Grove, IL 60515
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Detection Systems & Service Inc Downers Grove
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Detection Systems & Service Inc has a BuildZoom score of 105, which places them above 92% of 65,686 contractors in Illinois.
Activity
|
12 projects
|
2025 |
|
14 projects
|
2024 |
|
9 projects
|
2023 |
Our building permit records indicate that Detection Systems & Service Inc 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 |
|
3 projects
|
$5k-$20k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $6,360. 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 Detection Systems & Service Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Installation of additional fire alarm system devices to bring suite into compliance with current code
Valuation:
N/A
Permit #:
25FALM-0002
Status:
issued
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
: attic heat detection plan review #24-8908
Valuation:
N/A
Permit #:
F2025-0075
Status:
final
Fee:
$50
Permit Type:
N/A
Building Type:
Building use group
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
24-00003159|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
23-00004577|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Exterior facade improvements interior warehouse build-out new curb cut and grading repair and restriiping of exostomg [arlomg modification to s[roml;er amd fa sutems by trad contractors. 24, 411 sf total: $500, 000.00
Valuation:
N/A
Permit #:
PF19-0101
Status:
triage
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
: suite renovation plan review #25-9112 with inspections
Valuation:
N/A
Permit #:
F2025-0144
Status:
final
Fee:
$50
Permit Type:
N/A
Building Type:
Building use group
Community christian church- addition to existing fire alarm system * approved
Valuation:
$6,000
Permit #:
21-FAL-0062
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
23-00000177|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
22-00004586|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
<h2>modify an existing fire alarm system for a tenant remodel.</h2>
Valuation:
$13,500
Permit #:
FIRE20241134
Status:
filed
Fee:
$361
Permit Type:
Fire
Building Type:
N/A
: multi purpose building plans review #24-8628
Valuation:
N/A
Permit #:
F2025-0049
Status:
final
Fee:
$50
Permit Type:
N/A
Building Type:
Building use group
6th floor - additions to existing fire alarm system * approved
Valuation:
$2,460
Permit #:
22-FAL-0025
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of additional fire alarm devices to bring the area of work into compliance with current code
Valuation:
N/A
Permit #:
PF24-0038
Status:
final
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Interior warehouse buildout including installation of interior overhead doors and lighting sprin kler and fa systems by trade contractors. total: $45, 000.00
Valuation:
N/A
Permit #:
PF19-0063
Status:
final
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
22-00002510|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
22-00002109|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Commercial alteration/repair (no new sq ftg)
Valuation:
N/A
Permit #:
22-00000751|FABD00
Status:
applied
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Woodland corporate - additions to existing fire alarm system * approved
Valuation:
$3,660
Permit #:
21-FAL-0049
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Additions to existing fire alarm system
Valuation:
N/A
Permit #:
PF22-0083
Status:
triage
Fee:
N/A
Permit Type:
Fire alarm
Building Type:
N/A
Fire alarm- addition to existing system
Valuation:
N/A
Permit #:
FATA-22-00834
Status:
final
Fee:
$175
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Detection Systems & Service Inc License info
Verified License
| License # | CON-008476-2025 |
| Status | Active |
| Town | Palatine |
| Type | Fire Alarm Contractor Registration |
| Class | Fire Alarm Co. |
| Date Issued | 01-29-2026 |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Detection Systems & Service Inc at the Village of Palatine Registered Contractors.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | ECC94646 |
| Status | Active |
| City | City Of Chicago |
| Type | Electrical Contractor (Low Voltage) |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Detection Systems & Service Inc at the City of Chicago Data Portal.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| County | Cook County |
| Type | Electrical |
| Date Issued | 01-21-2026 |
- BuildZoom verified this license was active as of June 2026.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| Town | Palatine |
| Type | Fire Alr |
- When BuildZoom last verified this license, it had an expiration date of December, 2021. Check the current license status of Detection Systems & Service Inc with the Village of Palatine Registered Contractors
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | L-2014-010 |
| Status | Active |
| County | Kankakee County |
| Type | Fire Alarm |
- When BuildZoom last verified this license, it had an expiration date of January, 2015. Check the current license status of Detection Systems & Service Inc with the Kankakee County Planning Department
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | L-2012-052 |
| Status | Active |
| County | Kankakee County |
| Type | Fire Alarm |
- When BuildZoom last verified this license, it had an expiration date of August, 2017. Check the current license status of Detection Systems & Service Inc with the Kankakee County Planning Department
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 127000419 |
| Status | Active |
| State | Illinois |
| Type | Alarm Contractor Agency |
- When BuildZoom last verified this license, it had an expiration date of August, 2017. Check the current license status of Detection Systems & Service Inc with the Illinois Department of Financial & Professional Regulation
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR7154 |
| Status | Inactive |
| County | Dupage County |
| Type | Fire Alarm |
- According to the County of Dupage Contractor Registration Information, 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 Detection Systems & Service Inc at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-24-24356 |
| Status | Inactive |
| Town | Orland Park |
| Type | Fire Alarm Contractor |
- According to the Village of Orland Park 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 Detection Systems & Service Inc at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR0001504 |
| Status | Inactive |
| County | Dupage County |
| Type | Sub Contractor, Fire Alarm |
- According to the County of Dupage Contractor Registration Information, 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 Detection Systems & Service Inc at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CR7154 |
| Status | Inactive |
| County | Dupage County |
| Type | Sub Contractor, Fire Alarm |
- According to the County of Dupage Contractor Registration Information, 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 Detection Systems & Service Inc at the County of Dupage Contractor Registration Information.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | City Of Chicago |
| Type | Low Voltage |
- According to the City of Chicago Data Portal, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 127.000419/124.001806 |
| Status | Inactive |
| City | Evanston |
| Type | Contractor Other |
- According to the City of Evanston Building and Inspection Services, 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 Detection Systems & Service Inc at the City of Evanston Building and Inspection Services.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CL-20-24356 |
| Status | Inactive |
| Town | Orland Park |
| Type | Fire Alarm Contractor |
- According to the Village of Orland Park 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 Detection Systems & Service Inc at the Village of Orland Park Contractor License.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | City Of Chicago |
| Type | Low Voltage |
- According to the City of Chicago Data Portal, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | Cook County |
| Type | Electrical |
- According to the Cook County Department of Building and Zoning, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | City Of Chicago |
| Type | Low Voltage |
- According to the City of Chicago Data Portal, 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.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
165
Permits
- Building permit records show that Detection Systems & Service Inc has worked on 165 permitted projects.
Detection Systems & Service Inc Employees
DI
Detection Systems And Service Inc
Owner