Updated: May 11, 2026
Location and Projects
Address
1225 S WELLER, STE 500, Seattle, WA, 98144
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Marpac Construction LLC
Since 1995, Marpac Construction LLC has managed a wide range of projects across Seattle and the surrounding Northwest region, including extensive work in affordable housing and community-focused developments. Headquartered in Seattle’s International District, the firm operates as a full-service construction partner, combining estimating, value engineering, scheduling, mechanical engineering, and constructability analysis for projects of varying sizes. Marpac’s portfolio features over $900 million in negotiated projects completed during their three decades in business, with current projects exceeding $100 million. The leadership team includes principals such as Sai Chaleunphonh overseeing preconstruction, Nat Nguyen in estimating, and Will Ng in construction. Marpac’s project management capabilities extend to sustainable construction and integrating information technology solutions, serving clients from initial planning through execution.
Marpac Construction LLC Services
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Marpac Construction LLC Contact Information
Phone Number: (206) 329-4992
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Address: 1225 S WELLER, STE 500, Seattle, WA 98144
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Marpac Construction LLC Seattle
Quality
100
87th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Marpac Construction LLC has a BuildZoom score of 100, which places them above 87% of 128,670 contractors in Washington.
Activity
|
7 projects
|
2025 |
|
9 projects
|
2024 |
|
6 projects
|
2023 |
Our building permit records indicate that Marpac Construction LLC has worked on at least
22.0 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 |
|
3 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Marpac Construction LLC mostly works on
new construction
and home addition
projects.
Pricing
|
1 project
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
5 projects
|
$1mil+ |
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.
Building Permits by Marpac Construction LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Priority - new (43) unit five-story type v-a construction of affordable family housing. first floor to contain a community room and residential amenities along with ancillary utility spaces. project to have a mix of 1-bedroom and 2 bedroom units. **note: separate permits are required for mechanical electrical and plumbing for fixtures and equipment and a tacoma public utilities permit... see more
Valuation:
$14,000,000
Permit #:
BLDCN23-0011
Status:
final
Fee:
$91,127
Permit Type:
N/A
Building Type:
N/A
New construction of 3-story multifamily building of type va construction. 17 affordable housing units in total comprised of 1-bedroom units. **note: separate permits are required for mechanical electrical and plumbing for fixtures and equipment and a tacoma public utilities permit. **frc23-0182 (09/27/2023): based on soil conditions at the site and the high cost of over excavation the... see more
Valuation:
$6,000,000
Permit #:
BLDCN23-0012
Status:
final
Fee:
$41,482
Permit Type:
N/A
Building Type:
N/A
Priority - shiloh baptist church proposes the construction of new residential affordable housing at 813 and 815 south 13th street tacoma washington. the project consists of a new multi-family residential building utility improvements and site improvements to support the program. reconstruction of sidewalk curb gutter and asphalt on south 13th street adjacent to the site as well as dri... see more
Valuation:
$6,000,000
Permit #:
SDEV22-0433
Status:
final
Fee:
$17,573
Permit Type:
N/A
Building Type:
N/A
Priority - shiloh baptist church proposes the construction of new residential affordable housing at 1206 and 1208 south i street tacoma washington. the project consists of a new multi-family residential building utility improvements and site improvements to support the program. the project site is located on tax parcels 2012180030 and 2012180051 and is bounded by residential housing t... see more
Valuation:
$12,500,000
Permit #:
SDEV22-0432
Status:
final
Fee:
$16,296
Permit Type:
N/A
Building Type:
N/A
Priority - construction of a 6 story mixed use apartment building;va wood frame over type ia concrete frame. 88 affordable apartments for seniors with approximately 2 300 sf of community learning space/adjacent kitchen. surface parking is provided off alley. mechanical electrical and plumbing are to be submitted separately related to sdev22-0339 ** frc23-0089 - 04-27-23 - updates to g... see more
Valuation:
$27,000,000
Permit #:
BLDCN22-0066
Status:
final
Fee:
$154,927
Permit Type:
N/A
Building Type:
N/A
Impact black river elementary school. change of occupancy from m to e. renovation of existing vacant structure for educational use. 39, 104 sq ft. a certificate of occupancy is required to be issued upon project completion. please coordinate this review with your assigned building inspector. 8/11/2023-revision 1 approved. plans sheets aa1.00 c2.00 c2.01 a1.10 a2.00 a2.10 a2.20 a2.72 a... see more
Valuation:
$10,500,000
Permit #:
B22002477
Status:
final
Fee:
$111,733
Permit Type:
N/A
Building Type:
N/A
C&g. remove significant tree sawcut pavement trench install and connect waterpipes to existing waterline in public row. grind & overlay asphalt in row per cob standards. replace concrete curbs. tenant improvement renovation of an existing one-story 13 200 sf building to be used as an auto repair and washing service. existing service area interior work includes removal of interior wall... see more
Valuation:
N/A
Permit #:
24 126916 GD
Status:
final
Fee:
$2,681
Permit Type:
N/A
Building Type:
N/A
Right of way. sawcut pavement trench install and connect waterpipes to existing waterline in public row. grind & overlay asphalt in row per cob standards. replace concrete curbs. tenant improvement renovation of an existing one-story 13 200 sf building to be used as an auto repair and washing service. existing service area interior work includes removal of interior walls installation ... see more
Valuation:
N/A
Permit #:
24 126145 TN
Status:
final
Fee:
$2,560
Permit Type:
N/A
Building Type:
N/A
Renovation of an existing one-story 13 200 sf building to be used as an auto repair and washing service. the building occupancy will be s-1 motor vehicle repair garages. existing service area interior work includes removal of interior walls installation of fire sprinkler new interior walls and plumbing fixtures. existing mezzanine storage area to be updated with structure addition new... see more
Valuation:
N/A
Permit #:
24 123369 FD
Status:
final
Fee:
$2,030
Permit Type:
N/A
Building Type:
N/A
Renovation of an existing one-story 13 200 sf building to be used as an auto repair and washing service. the building occupancy will be s-1 motor vehicle repair garages. existing service area interior work includes removal of interior walls installation of fire sprinkler new interior walls and plumbing fixtures. existing mezzanine storage area to be updated with structure addition new... see more
Valuation:
N/A
Permit #:
24 123364 UE
Status:
issued
Fee:
$9,193
Permit Type:
N/A
Building Type:
N/A
Renovation of an existing one-story 13 200 sf building to be used as an auto repair and washing service. the building occupancy will be s-1 motor vehicle repair garages. existing service area interior work includes removal of interior walls installation of fire sprinkler new interior walls and plumbing fixtures. existing mezzanine storage area to be updated with structure addition new... see more
Valuation:
N/A
Permit #:
24 120287 BE
Status:
final
Fee:
$1,253
Permit Type:
N/A
Building Type:
N/A
Renovation of an existing one-story 13 200 sf building to be used as an auto repair and washing service. the building occupancy will be s-1 motor vehicle repair garages. existing service area interior work includes removal of interior walls installation of fire sprinkler new interior walls and plumbing fixtures. existing mezzanine storage area to be updated with structure addition new... see more
Valuation:
N/A
Permit #:
24 120190 BY
Status:
final
Fee:
$16,885
Permit Type:
N/A
Building Type:
N/A
Scriber lake alter. hs- remodel (adding restroom) plumbing not incl, scope generally consists of dividing a storage room to addition a single user all gender staff toilet room. work will include a limited amount of electrical plumbing and mechanical effort to addition a water closet and sink to the space. the new toilet room will be fully code compliant
Valuation:
N/A
Permit #:
BLD2024-0345
Status:
final
Fee:
$2,133
Permit Type:
N/A
Building Type:
N/A
Sidewalk closure - construction of a six story mixed use apartment building of type va wood frame construction over type ia concrete frame construction
Valuation:
N/A
Permit #:
RUSE23-0209
Status:
complete
Fee:
$412
Permit Type:
N/A
Building Type:
N/A
Vmp|when submitting an application please ensure you have attached all required documents.|certification: by using this portal to apply for permits i certify i am the owner of the property or the owner's authorized agent. if acting as an authorized agent i further certify that i have full power and authority to file this application and to perform on behalf of the owner all acts requi... see more
Valuation:
N/A
Permit #:
F22-0215
Status:
final
Fee:
$184
Permit Type:
Temporary - hot w...
Building Type:
N/A
Demolition of existing single family residence construction of new 3 story affordable housing
Valuation:
$30,000
Permit #:
DEMOR23-0058
Status:
final
Fee:
$205
Permit Type:
N/A
Building Type:
N/A
Demolition of existing single family residence construction of new 3 story affordable housing
Valuation:
$30,000
Permit #:
DEMOR23-0057
Status:
final
Fee:
$205
Permit Type:
N/A
Building Type:
N/A
Demolition of existing single family residence in preparation for construction of new housing
Valuation:
$30,000
Permit #:
DEMOR23-0056
Status:
final
Fee:
$205
Permit Type:
N/A
Building Type:
N/A
Demolition of existing single family residence in preparation for construction of new 3 story affordable housing
Valuation:
$30,000
Permit #:
DEMOR23-0055
Status:
final
Fee:
$205
Permit Type:
N/A
Building Type:
N/A
Demolition of existing single family residence to prepare for construction of new 3 story affordable housing
Valuation:
$30,000
Permit #:
DEMOR23-0054
Status:
final
Fee:
$205
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
173
BZ Score
-
Avg Project
-
Projects
164
BZ Score
-
Avg Project
-
Projects
164
BZ Score
$32.4K
Avg Project
-
Projects
Marpac Construction LLC Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Marpac Construction LLC License info
Verified License
| License # | MARPACL055JP |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Marpac Construction LLC at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | MARPACL055JP |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Marpac Construction LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Insured
| Insurer | Hartford Accident & Indemnity |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Safeco/American States Ins Co |
| Bond Value | $12,000 |
98
Permits
- Building permit records show that Marpac Construction LLC has worked on 98 permitted projects.
Marpac Construction LLC Employees
DM
Donald Mar
Partner/Member
DM
Douglas Mar
Partner/Member
HS
Herman Setijono
Partner/Member
JO
Jon Okada
Partner/Member
MJ
Mar, Douglas Jay
Owner
SC
Sai Chaleunphoah
Partner/Member
WN
William Ng
Partner/Member