Updated: Nov 16, 2025
Location and Projects
Address
5303 Lester Rd, Cincinnati, OH, 45213
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Diadem Plumber
Diadem, Inc, 5303 Lester Rd, Cincinnati, OH (Owned by: Garfield Hartman) holds a General license and 5 other licenses according to the Cincinnati license board.
Their BuildZoom score of 114 ranks in the top 2% of 52,717 Ohio licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diadem, Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Diadem, Inc Contact Information
Phone Number: (513) 508-6648
Address: 5303 Lester Rd, Cincinnati, OH 45213
Diadem, Inc Cincinnati
Quality
114
98th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Diadem, Inc has a BuildZoom score of 114, which places them above 98% of 52,717 contractors in Ohio.
Activity
|
4 projects
|
2025 |
|
15 projects
|
2024 |
|
33 projects
|
2023 |
|
22 projects
|
2022 |
Our building permit records indicate that Diadem, Inc has worked on at least
74.0 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.
Experience
|
13 projects
|
Home Additions |
|
19 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Diadem, Inc mostly works on
plumbing project
and home addition
projects.
Pricing
|
7 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
2 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $2,000. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Alter existing manual fire alarm system for renaissance columbus on the 4th floor by replacing notification devices like for like. stand alone permit. section 901.7 of the ohio fire code requires the fire code official to be notified of any impairment of the fire protection system(s) and the building shall either be evacuated or an approved fire watch be provided until the system(s) h... see more
Valuation:
N/A
Permit #:
FALRC2412193
Status:
complete
Fee:
$433
Permit Type:
N/A
Building Type:
N/A
Install new supervision only system in building #2 for lawndale commons apartments. new system to supervise sprinkler system. reference b.p. newm2129335 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2219258
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Alter existing supervision only system for patton wall coverings by installing new sprinkler monitoring devices and exterior notification devices. stand alone permit. section 901.7 of the ohio fire code requires the fire code official to be notified of any impairment of the fire protection system(s) and the building shall either be evacuated or an approved fire watch be provided until... see more
Valuation:
N/A
Permit #:
FALRC2226184
Status:
expired
Fee:
$735
Permit Type:
N/A
Building Type:
N/A
Install new supervision system for lawndale commons in building #8. system to supervise sprinkler system. reference b.p. newm2129268 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2308755
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
An est i/o64 addressable panel will be installed to supervise the main sprinkler riser located in the sprinkler room a/v units 1 manual pull station 1 smoke heat detectors 1 sprinkler flow alarm 1 sprinkler tamper devices 1 other 1 total devices 6
Valuation:
N/A
Permit #:
FALRM2308752
Status:
plancheck
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Install new supervision system for lawndale commons building #7. new system to supervise sprinkler system. reference b.p. newm2129290 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2308726
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Install new supervision only system for lawndale commons in building number 4. new system to supervise sprinkler system. reference b.p. newm2129340 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2308724
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Install new supervision system for lawndale commons in building #6. system to supervise sprinkler system. reference b.p. newm2129332 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2308717
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Alter existing fire alarm system for lululemon warehouse by relocating pull stations for relocated stairways. reference b.p. altc2146409 - (3) manual pull stations
Valuation:
$212,000
Permit #:
FALRC2202194
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Fire alarm panel currently uses and external dialer which only transmits alarms troubles and supervisory signals. we are going to install a manufacture specific internal dialer which will report point to point identification to the central station. we will also re-use the existing sole path cellular dialer
Valuation:
N/A
Permit #:
FALM-23-30081
Status:
final
Fee:
$474
Permit Type:
N/A
Building Type:
N/A
Install new supervision system for lawndale commons in building #12. system to supervise sprinkler system. reference b.p. newm2129283 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2308752
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Alter existing manual fire alarm system for flight safety international by installing new notification device and smoke detection in each new simulator. reference b.p. altc2330647 - (12) devices
Valuation:
N/A
Permit #:
FALRC2417328
Status:
issued
Fee:
$439
Permit Type:
N/A
Building Type:
N/A
Alter existing fire alarm system for three crosswords by changing monitoring to a sole path communication system per nfpa 72: 26.6.3. no plans submitted only cut sheets. stand alone permit. section 901.7 of the ohio fire code requires the fire code official to be notified of any impairment of the fire protection system(s) and the building shall either be evacuated or an approved fire ... see more
Valuation:
N/A
Permit #:
FALRC2234092
Status:
complete
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Install new supervision only system in building #10 for lawndale commons apartments. new system to supervise sprinkler system. reference b.p. newm2129285 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
$300
Permit #:
FALRM2219313
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Install new supervision only system in building #1 for lawndale commons apartments. new system to supervise sprinkler system. reference b.p. newm2129343 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2219303
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Install new supervision only system in water meter building for lawndale commons apartments. new system to supervise sprinkler system. reference b.p. newm2129687 - (1) a/v device (1) manual pull station (1) smoke detector (1) sprinkler flow alarm (1) sprinkler tamper device (1) facp
Valuation:
N/A
Permit #:
FALRM2219298
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
Alter existing manual and automatic fire alarm system for promowest productions by replacing/upgrading fire alarm control panel fire alarm annunciator panel and the initiating devices. nac panel and notification devices existing to remain. stand alone permit. section 901.7 of the ohio fire code requires the fire code official to be notified of any impairment of the fire protection sys... see more
Valuation:
N/A
Permit #:
FALRC2215813
Status:
complete
Fee:
$734
Permit Type:
N/A
Building Type:
N/A
Alter existing fire alarm system for an office building by changing monitoring to a sole path communication system per nfpa 72: 26.6.3. stand alone permit. section 901.7 of the ohio fire code requires the fire code official to be notified of any impairment of the fire protection system(s) and the building shall either be evacuated or an approved fire watch be provided until the system... see more
Valuation:
N/A
Permit #:
FALRC2213925
Status:
complete
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Alter existing fire alarm system for crosswoods tech by changing monitoring to a sole path communication system per nfpa 72: 26.6.3. no plans submitted only cut sheets. stand alone permit. section 901.7 of the ohio fire code requires the fire code official to be notified of any impairment of the fire protection system(s) and the building shall either be evacuated or an approved fire w... see more
Valuation:
N/A
Permit #:
FALRC2213898
Status:
complete
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Revision to fire alarm permit falrc2135406. revision is to change locations for some notification devices as well as addition duct detectors. new total device count - (46) a/v devices (10) manual pull stations (1) smoke/heat detector (1) sprinkler flow alarm (1) sprinkler tamper device (2) duct detectors
Valuation:
N/A
Permit #:
PLRE2206222
Status:
complete
Fee:
$300
Permit Type:
N/A
Building Type:
N/A
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Diadem, Inc License info
Verified License
| License # | CBRC000359 |
| Status | Active |
| City | Cincinnati |
| Type | General |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Diadem, Inc at the Cincinnati Area Geographic Information Systems.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CBRC000359 |
| Status | Active |
| City | Cincinnati |
| Type | Electrical State Licensed |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Diadem, Inc at the Cincinnati Area Geographic Information Systems.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | INTEGPS851MS |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Diadem, Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | EL-0000016675 |
| Status | Active |
| State | Ohio |
| Type | Electrician |
- When BuildZoom last verified this license, it had an expiration date of March, 2017. Check the current license status of Diadem, Inc with the Ohio Department of Commerce
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | EL.16675 |
| Status | Inactive |
| City | Ohio Professional |
| Type | Electrical Contractor |
- According to the Ohio Professional License Center, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Diadem, Inc at the Ohio Professional License Center.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | FP00077 |
| Status | Inactive |
| City | Columbus |
| Type | Fire Protect Co |
- According to the The City of Columbus, OH, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Diadem, Inc at the The City of Columbus, OH.
This is a sample of licensing data; click here to access a complete history.
114
BuildZoom Score
Insured
| Insurer | West Bend Mutual |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Great American Ins Co |
| Bond Value | $12,000 |
190
Permits
- Building permit records show that Diadem, Inc has worked on 190 permitted projects.
Diadem, Inc Employees
BA
Boyd, Michael A
President
GH
Garfield Hartman
Owner
GH
Garfield W Hartman
GH
Garfield W Hartman Hartman
MB
Michael Boyd
President