Updated: Jun 16, 2026
Location and Projects
Headquarters Address
UA, 00000
Local address
Portland, OR, 97214
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Mahlum Architects
Mahlum Architects, Portland, OR (Owned by: Diane G Shiner) holds a Architectural Firm license and 6 other licenses according to the Oregon license board.
Their BuildZoom score of 100 ranks in the top 13% of 62,733 Oregon licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mahlum Architects, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Mahlum Architects Services
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Mahlum Architects Contact Information
Phone Number: (206) 441-4151
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Mahlum Architects Portland
Quality
100
87th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mahlum Architects has a BuildZoom score of 100, which places them above 87% of 62,733 contractors in Oregon.
Activity
|
3 projects
|
2025 |
|
3 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Mahlum Architects has worked on at least
7.0 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
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Mahlum Architects mostly works on
home addition
projects.
Pricing
|
1 project
|
$250k-$500k |
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.
Fern hill es addition - **epr** (21) ckts for two-story four classroom addition
Valuation:
N/A
Permit #:
ELEC-2506158
Status:
issued
Fee:
$810
Permit Type:
N/A
Building Type:
N/A
Fern hill es addition - (17) ckts for two-story four classroom addition
Valuation:
N/A
Permit #:
P0300526
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Farmington view es grading - storm structures and piping to collect and convey stormwater runoff to treatment facilities - cath basin, (6) drywell, (1)footing drain, 500 ft storm sewer
Valuation:
N/A
Permit #:
PLMB-2100245
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Site plumbing for the development of the single-story addition to fgsd high school
Valuation:
N/A
Permit #:
311-24-000147-PLM
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
North plains elementary - remove and replace existing windows and replace failed stucco cladding at one facade
Valuation:
N/A
Permit #:
P0265869
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
North plains elementary - remove and replace existing windows and replace failed stucco cladding at one facade
Valuation:
N/A
Permit #:
BLDG-2113326
Status:
filed
Fee:
$3,494
Permit Type:
N/A
Building Type:
N/A
West union elementary - remove and replace existing windows
Valuation:
N/A
Permit #:
BLDG-2113324
Status:
filed
Fee:
$3,974
Permit Type:
N/A
Building Type:
N/A
Groner elementary - remove and replace exisiting windows
Valuation:
N/A
Permit #:
P0265868
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Groner elementary - remove and replace exisiting windows
Valuation:
N/A
Permit #:
BLDG-2113325
Status:
filed
Fee:
$3,974
Permit Type:
N/A
Building Type:
N/A
This will be a behavioral health crisis center operated 24-7 by benton county in cooperation with the local coordinated care organization intercommunity health network (ihn-cco). at approximately 8 000 gsf the two-story building will contain reception and intake for county residents who might be experiencing a mental health crisis and if appropriate the facility will offer them either... see more
Valuation:
N/A
Permit #:
PRE22-00044
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kaiser spc infrastructure upgrades
Valuation:
$955,000
Permit #:
B0213518
Status:
final
Fee:
$11,672
Permit Type:
N/A
Building Type:
N/A
Addition-shell only - ivr number = 623100000170 ~ ivr phone
Valuation:
$1,300,000
Permit #:
623-B04-00053
Status:
final
Fee:
$9,858
Permit Type:
Commercial
Building Type:
N/A
New emergency dept. expansion see b0318506,b0383606 new emergency dept. expansion see b0318506,b0383606
Valuation:
$10,000,000
Permit #:
B0259706
Status:
FINAL
Fee:
$307,736
Permit Type:
N/A
Building Type:
N/A
Addition/alteration commercial
2430 NW 206th Ave, OR
2016-06-01
No Description Available
Valuation:
$2,800,000
Permit #:
STR16-00234
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Screening facility for a nursery screening facility for a nursery
Valuation:
$90,000
Permit #:
B0016900
Status:
FINAL
Fee:
$1,849
Permit Type:
N/A
Building Type:
N/A
Agritope hazardous materials buildling agritope hazardous materials buildling
Valuation:
$48,000
Permit #:
B0031500
Status:
EXPIRED
Fee:
$755
Permit Type:
N/A
Building Type:
N/A
Agritope complex ext-for bio-lab int see p-258-00
Valuation:
N/A
Permit #:
P0025900
Status:
final
Fee:
$2,545
Permit Type:
N/A
Building Type:
N/A
Agritope biology lab int-for screening building int see
Valuation:
N/A
Permit #:
P0025800
Status:
expired
Fee:
$382
Permit Type:
N/A
Building Type:
N/A
Iridio photography tenant improvement iridio photography tenant improvement
Valuation:
$1,000,000
Permit #:
B0374906
Status:
FINAL
Fee:
$41,350
Permit Type:
N/A
Building Type:
N/A
Providence health system 1st floor renovation providence health system 1st floor renovation
Valuation:
$385,000
Permit #:
B0169805
Status:
FINAL
Fee:
$2,945
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
License # ARI-5274
Portland, OR
141
BZ Score
$80K
Avg Project
-
Projects
131
BZ Score
$20K
Avg Project
-
Projects
License # ARF-14654
Salem, OR
135
BZ Score
-
Avg Project
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Projects
Mahlum Architects Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Mahlum Architects License info
Verified License
| License # | ARF-0121 |
| Status | Active |
| State | Oregon |
| Type | Architectural Firm |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mahlum Architects at the Oregon Board of Architect Examiners.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 8353 |
| Status | Active |
| State | North Carolina |
| Type | Architect |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mahlum Architects at the North Carolina Board of Architecture.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | ARC.00402263 |
| Status | Active |
| State | Colorado |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of October, 2017. Check the current license status of Mahlum Architects with the Colorado Division of Professions and Occupations
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | ARC-402263 |
| Status | Active |
| State | Colorado |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of October, 2013. Check the current license status of Mahlum Architects with the Colorado Division of Professions and Occupations
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ARI-0735 |
| Status | Inactive |
| State | Oregon |
| Type | Architect Individual |
- According to the Oregon Board of Architect Examiners, 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 Mahlum Architects at the Oregon Board of Architect Examiners.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ARI-2961 |
| Status | Inactive |
| State | Oregon |
| Type | Architect Individual |
- According to the Oregon Board of Architect Examiners, 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 Mahlum Architects at the Oregon Board of Architect Examiners.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0121AF |
| Status | Inactive |
| State | Oregon |
| Type | Architect |
- According to the Oregon Board of Architect Examiners, 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 Mahlum Architects at the Oregon Board of Architect Examiners.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
18
Permits
- Building permit records show that Mahlum Architects has worked on 18 permitted projects.
Mahlum Architects Employees
DS
Diane G Shiner
Owner
EM
Edward K. Mahlum
JM
John E. Mahlum
MI
Mahlum Architects, Inc.
Owner
SS
Steven Glen Schwaeber
Owner