Updated: Jun 02, 2026
Location
Headquarters Address
Howell Belanger Castelli Architects, New York, NY, 10001
Local address
New York, NY, 10001
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Howell Belanger Castelli Architects
Howell Belanger Castelli Architects, (Owned by: Gregory R Belanger) holds a Architect license and 15 other licenses according to the Colorado license board.
Their BuildZoom score of 93 ranks in the top 27% of 14,657 Arkansas licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Howell Belanger Castelli Architects, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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Phone Number: (212) 647-0011
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Howell Belanger Castelli Architects License info
Verified License
| License # | 400280 |
| Status | Active |
| State | Colorado |
| Type | Architect |
| Date Issued | 11-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Howell Belanger Castelli Architects at the Colorado Division of Professions and Occupations.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | FIRM.00130827 |
| Status | Active |
| State | Ohio |
| Type | Architect |
| Date Issued | 07-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Howell Belanger Castelli Architects at the Ohio Architects Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CA-0726 |
| Status | Active |
| State | Nebraska |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Howell Belanger Castelli Architects with the Nebraska Board of Engineers and Architects
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | ARC.0014451-COA |
| Status | Active |
| State | Rhode Island |
| Type | Architect |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Howell Belanger Castelli Architects at the State of Rhode Island Department of Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | AX010610 |
| Status | Active |
| State | Pennsylvania |
| Type | Architecture Firm |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Howell Belanger Castelli Architects at the Pennsylvania Department of State (Bureau of Professional and Occupational Affairs).
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 52219 |
| Status | Active |
| State | North Carolina |
| Type | Architect |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Howell Belanger Castelli Architects at the North Carolina Board of Architecture.
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Verified License
| License # | 5278 |
| Status | Active |
| State | Kentucky |
| Type | Architect |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Howell Belanger Castelli Architects at the Kentucky Board of Architects.
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License Not Verified
| License # | 102396 |
| Status | Active |
| State | Tennessee |
| Type | Architects |
- When BuildZoom last verified this license, it had an expiration date of November, 2015. Check the current license status of Howell Belanger Castelli Architects with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 3933 |
| Status | Active |
| State | Tennessee |
| Type | Architectural Firms |
- When BuildZoom last verified this license, it had an expiration date of November, 2015. Check the current license status of Howell Belanger Castelli Architects with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | FIRM.00130827-ARC |
| Status | Active |
| State | Ohio |
| Type | Architectural Firm |
- When BuildZoom last verified this license, it had an expiration date of June, 2016. Check the current license status of Howell Belanger Castelli Architects with the Ohio Architects Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | C516 |
| Status | Active |
| State | Arkansas |
- When BuildZoom last verified this license, it had an expiration date of January, 2026. Check the current license status of Howell Belanger Castelli Architects with the Arkansas State Board of Architects, Landscape Architects, and Interior Designers
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | A-14451 |
| Status | Active |
| State | Rhode Island |
| Type | Architect Firm |
- When BuildZoom last verified this license, it had an expiration date of November, 2015. Check the current license status of Howell Belanger Castelli Architects with the Boards for Design Professionals: Architects
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 3493 |
| Status | Active |
| State | Arkansas |
- When BuildZoom last verified this license, it had an expiration date of July, 2025. Check the current license status of Howell Belanger Castelli Architects with the Arkansas State Board of Architects, Landscape Architects, and Interior Designers
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 15484 |
| Status | Active |
| State | Maryland |
| Type | Architect - Corporation Architects |
- When BuildZoom last verified this license, it had an expiration date of November, 2015. Check the current license status of Howell Belanger Castelli Architects with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 7175 |
| Status | Active |
| State | South Carolina |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of June, 2015. Check the current license status of Howell Belanger Castelli Architects with the South Carolina Board of Architectural Examiners
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License Not Verified
| License # | ARC-400280 |
| Status | Active |
| State | Colorado |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of June, 2015. Check the current license status of Howell Belanger Castelli Architects with the Colorado Division of Professions and Occupations
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Howell Belanger Castelli Architects Employees
BR
Belanger, Gregory R.
Owner
GB
Gregory Belanger
Owner
GB
Gregory R Belanger
Owner
HP
Howell Belanger Castelli Architects, Pc
Owner
MS
Michael S. Sjoholm
MS
Michael Shawn Sjoholm
Architect
MB
Mr Gregory R Belanger
Owner
RC
Raffaele Castelli
Owner