Updated: Jun 24, 2026
Location and Projects
Address
Seattle, WA, 98109
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Callison Rtkl Architect
Callison Rtkl Inc, (Owned by: Callison Architects, P.C.) holds a Architect license and 7 other licenses according to the Tukwila license board.
Their BuildZoom score of 95 ranks in the top 22% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Callison Rtkl Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Callison Rtkl Inc Services
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Callison Rtkl Inc Contact Information
Phone Number: (206) 623-4646
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Outlet collection: demolish mezzanine interior finshes& mec/plm
Valuation:
N/A
Permit #:
TEN19-0208
Status:
final
Fee:
N/A
Permit Type:
Remodel
Building Type:
N/A
Tacoma diesel
Valuation:
N/A
Permit #:
2020-2273-ELTP
Status:
issued
Fee:
$54
Permit Type:
Temporary power
Building Type:
N/A
Sare electric
Valuation:
N/A
Permit #:
2020-2033-ELCA
Status:
issued
Fee:
$102
Permit Type:
Electrical commer...
Building Type:
N/A
Outlet collection ste 1065 landlord work: ug supply lines outlet collection ste 1065 landlord work: ug supply lines
Valuation:
N/A
Permit #:
PLM19-0076
Status:
issued
Fee:
$66
Permit Type:
N/A
Building Type:
N/A
Outlet collection ste 335 rpba
Valuation:
N/A
Permit #:
BFL13-0029
Status:
final
Fee:
N/A
Permit Type:
Rpba >2
Building Type:
N/A
Outlet collection ste 1065 landlord work: 2-rtus 2-gas
Valuation:
N/A
Permit #:
MEC19-0253
Status:
final
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
Sare electric
Valuation:
N/A
Permit #:
2019-2436-ELCA
Status:
issued
Fee:
$203
Permit Type:
Electrical commer...
Building Type:
N/A
Sare electric
Valuation:
N/A
Permit #:
2020-1120-ELCA
Status:
issued
Fee:
$86
Permit Type:
Electrical commer...
Building Type:
N/A
Chambers prairie electric
Valuation:
N/A
Permit #:
2018-2740-ELRA
Status:
issued
Fee:
$62
Permit Type:
Electrical reside...
Building Type:
N/A
Outlet collection ste 1060: service corridor & shell
Valuation:
N/A
Permit #:
TEN17-0340
Status:
final
Fee:
N/A
Permit Type:
Owner buildout
Building Type:
N/A
Outlet collection ste 1060: shell rtus & gas pipe
Valuation:
N/A
Permit #:
MEC17-0338
Status:
final
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
Outlet collection ste 1060: shell rough-in
Valuation:
N/A
Permit #:
PLM17-0332
Status:
final
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
Sonitrol pacific
Valuation:
N/A
Permit #:
2018-2791-ELVM
Status:
issued
Fee:
$54
Permit Type:
Low voltage
Building Type:
N/A
Sare electric
Valuation:
N/A
Permit #:
2018-2765-ELCA
Status:
issued
Fee:
$102
Permit Type:
Electrical commer...
Building Type:
N/A
Sonitrol pacific
Valuation:
N/A
Permit #:
2018-2328-ELAM
Status:
issued
Fee:
$54
Permit Type:
Low voltage
Building Type:
N/A
Sonitrol pacific
Valuation:
N/A
Permit #:
2018-2327-ELAM
Status:
issued
Fee:
$54
Permit Type:
Low voltage
Building Type:
N/A
G & g heating
Valuation:
N/A
Permit #:
2019-0849-MECH
Status:
issued
Fee:
$96
Permit Type:
Mechanical commer...
Building Type:
N/A
Jc penney
Valuation:
N/A
Permit #:
D16-0232
Status:
final
Fee:
$2,079
Permit Type:
Comm/whse
Building Type:
N/A
The outlet collection connection concourse
Valuation:
N/A
Permit #:
TEN20-0030
Status:
issued
Fee:
$6,790
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
2018-1927-BPC
Status:
issued
Fee:
$50
Permit Type:
All excpt mf tri ...
Building Type:
N/A
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Callison Rtkl Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Callison Rtkl Inc License info
License Not Verified
| License # | AEC1367 |
| Status | Active |
| City | Tukwila |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Callison Rtkl Inc with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1367 |
| Status | Active |
| City | Tukwila |
| Type | Architect |
- BuildZoom has not verified this license since March, 2017.
Verify this license's status for Callison Rtkl Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 184004964 |
| Status | Active |
| State | Illinois |
| Type | Design Firm Prof Reg |
- When BuildZoom last verified this license, it had an expiration date of April, 2017. Check the current license status of Callison Rtkl 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 # | AX010480 |
| Status | Inactive |
| State | Pennsylvania |
| Type | Architecture Firm |
- According to the Pennsylvania Department of State (Bureau of Professional and Occupational Affairs), 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 Callison Rtkl Inc 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.
Inactive License
| License # | LL137 |
| Status | Inactive |
| State | Arkansas |
- According to the Arkansas State Board of Architects, Landscape Architects, and Interior Designers, 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 Callison Rtkl Inc at 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.
Inactive License
| License # | 51888 |
| Status | Inactive |
| State | North Carolina |
| Type | Architect |
- According to the North Carolina Board of Architecture, 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 Callison Rtkl Inc at the North Carolina Board of Architecture.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 11983 |
| Status | Inactive |
| State | North Carolina |
| Type | Architect |
- According to the North Carolina Board of Architecture, 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 Callison Rtkl Inc at the North Carolina Board of Architecture.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 21AC00062900 |
| Status | Inactive |
| State | New Jersey |
| Type | Certificate Of Authorization |
- According to the New Jersey Department of Law & Public Safety, 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 Callison Rtkl Inc at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
95
Permits
- Building permit records show that Callison Rtkl Inc has worked on 95 permitted projects.
Callison Rtkl Inc Employees
CP
Callison Architects, P.C.
Owner
CL
Callison Architecture Llc
Owner
DC
David F Cassidy
Owner
SD
Stephen Dwoskin
Owner
SD
Stephen L Dwoskin
Owner
SD
Stephen Loewy Dwoskin
Owner