Updated: May 29, 2026
Location and Projects
Address
Avenue, MD, 20609
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George Leo Hall III HVAC/Mechanical Contractor
George Leo Hall III, Avenue, MD holds a Heating, Ventilation, Air Conditioning And Refrigeration license according to the Maryland license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring George Leo Hall III, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
George Leo Hall III Contact Information
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Renovation of an existing 2 story single family dwelling;1st floor includes conversion of existing garage(*see text*)
Valuation:
$211,101
Permit #:
20-262
Status:
issued
Fee:
$70
Permit Type:
Residence additio...
Building Type:
N/A
Removal of the existing hvac system. installation of a trane xr16 series model 4twr6036h1 3 ton single stage compressor heat pump trane model tam9aob30v31 variable speed air handler 8 kw electric back up heater & honeywell th6220wf2006 t-6 pro smart thermostat. make all necessary connections to the existing supply air duct work and electric. start up of equipment and ensure everything... see more
Valuation:
N/A
Permit #:
MECH-200708
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install new condenser and coil (replacement)
Valuation:
N/A
Permit #:
MECH-191362
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 het pump at 2.5 ton and 1 air handler at 2.5 tons insp 69
Valuation:
N/A
Permit #:
ME_180342
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace heat pump system
Valuation:
N/A
Permit #:
MECH-191237
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Complete system change out condenser & air handler
Valuation:
N/A
Permit #:
MECH-190829
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of (1) heat pump at 30, 000 btus * insp 69
Valuation:
N/A
Permit #:
ME_180187
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 heat pump at 24000 btu * insp 69
Valuation:
N/A
Permit #:
ME_180357
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Heat pump replacement
Valuation:
N/A
Permit #:
MECH-180124
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 gas fired heat at 70000 btu and 1 air conditioning unit at 2.5 tons. ( this is to another seperate system in home ) insp 69
Valuation:
N/A
Permit #:
ME_180741
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 gas fired heat at 70000 btu and 2 air conditioning units a 3 tons insp 69
Valuation:
N/A
Permit #:
ME_180646
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 2 heat pumps at 24000 btus. same size and same place. insp 69
Valuation:
N/A
Permit #:
ME_180793
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of (1) heat pump at 30000 btus. same place same size. insp 69
Valuation:
N/A
Permit #:
ME_180448
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 heat pump at 24000 btus. same place and same size. insp 69
Valuation:
N/A
Permit #:
ME_180444
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 heat pump at 36000 btus. same size and same place. insp 69
Valuation:
N/A
Permit #:
ME_180660
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of one heat pump at 2.5 ton and 30.000 btu * insp 69
Valuation:
N/A
Permit #:
ME_181031
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace existing heat pump system
Valuation:
N/A
Permit #:
MECH-220012
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 heat pump at 30000 btu * insp 69
Valuation:
N/A
Permit #:
ME_180430
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 heat pump at 24000 btu * insp 69
Valuation:
N/A
Permit #:
ME_180740
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential replacement of 1 gas fired heat at 60000 btu * insp 69
Valuation:
N/A
Permit #:
ME_180647
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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George Leo Hall III License info
Verified License
| License # | 46497 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for George Leo Hall III at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
90
BuildZoom Score
57
Permits
- Building permit records show that George Leo Hall III has worked on 57 permitted projects.