Updated: May 19, 2026
Location and Projects
Address
6430 131st Ave SE, Bellevue, WA, 98006
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Seismic Northwest LLP Photos
Seismic Northwest LLP Construction
Serving the greater Seattle area, Seismic Northwest offers earthquake retrofit services for your home or commercial building. Our experienced team offers free consultations to get you started. We will guide you through the process of securing your home's foundation, which includes design, engineering, permitting, and installation of custom hardware.
From BuildZoom:
Their BuildZoom score of 0 does not rank in the top 50% of Washington contractors.
If you are thinking of hiring Seismic Northwest LLP, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Seismic Northwest LLP Contact Information
Phone Number: (818) 424-0621
Address: 6430 131st Ave SE, Bellevue, WA 98006
Seismic Northwest LLP Bellevue
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Seismic Northwest LLP, log in and update your license info in the “Edit Profile” tab.
Activity
|
3 projects
|
2025 |
|
2 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Seismic Northwest LLP has worked on at least
6.0 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.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
1 project
|
$50k-$100k |
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 Seismic Northwest LLP
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove deck on roof remove existing roof on addition show in plan and replace with low slope engineered roof system addition pony walls around perimeter at 48in and glass railing on north side addition in walk threw skylight
Valuation:
$60,000
Permit #:
BLDCA25-0126
Status:
canceled
Fee:
N/A
Permit Type:
Remodel (T.I.)
Building Type:
Houseplex
Rrem - 2018 irc - voluntary seismic retrofit to bolt home down to foundation. first story will be receiving new shear wall plywood wherever applicable. titen bolts will secure the sill plate to the foundation. a35 clips used to secure first story rim joist to the shear wall below per engineer spec
Valuation:
$8,662
Permit #:
BLDG-2023-06299
Status:
expired
Fee:
$446
Permit Type:
N/A
Building Type:
N/A
Mike carney - voluntary seismic retrofit, voluntary seismic retrofit (stfi) of an older house with no existing foundation bolts. apply titen bolts and urfp clips to foundation walls to secure sill plate to foundation. apply a35 clips to rim joist to further attach floor system to sill plate. apply new plywood to 1st story interior to strengthen shear support where applicable
Valuation:
N/A
Permit #:
BLD22-00143
Status:
final
Fee:
$325
Permit Type:
N/A
Building Type:
N/A
E22-21027 volutnary seismic retrofit house to be bolted to foundation. first story will receive new shear wall plywood wherever applicable first story top plate will be connected to the rim joist using a35 clips
Valuation:
N/A
Permit #:
BLD-22-0868
Status:
complete
Fee:
$519
Permit Type:
N/A
Building Type:
N/A
Residential remodel - masters residence - 2018 irc - enchancing structural stability from remodel from previous owner removal of partial wall and replace with columns - total sf 2210
Valuation:
$33,770
Permit #:
BLDG-2022-02159
Status:
final
Fee:
$1,174
Permit Type:
N/A
Building Type:
N/A
Work involves the removal of an interior load bearing wall and flush mounting support beams in the ceiling to support the above weight in order to connect the family and dining room into a single room. does not include plumbing mechanical or electrical
Valuation:
N/A
Permit #:
20 119238 BU
Status:
final
Fee:
$348
Permit Type:
N/A
Building Type:
N/A
After the fact permit to address violation viol23-0134 at 4-plex. replacing rotted boards and pickets on a 60-year old deck that was starting tilt and fall apart. no site plan--replace boards
Valuation:
$600
Permit #:
BLDCA23-0080
Status:
canceled
Fee:
$52
Permit Type:
Remodel (T.I.)
Building Type:
N/A
Sethia single family residence alteration. beam repair and door and relocate exterior door in converted living space which was garage without benefit of permit
Valuation:
$28,850
Permit #:
B24004884
Status:
complete
Fee:
$1,901
Permit Type:
N/A
Building Type:
N/A
This project is to replace load bearing wall that separates kitchen and living room with a beam
Valuation:
N/A
Permit #:
24 111276 BU
Status:
final
Fee:
$598
Permit Type:
N/A
Building Type:
N/A
Nang single family residence alteration. install glulam beam in existing single family residence
Valuation:
$7,000
Permit #:
B21000882
Status:
complete
Fee:
$374
Permit Type:
N/A
Building Type:
N/A
Rrem - 2018 irc - macartney residence - install 21 reinforcement steel beam in living room
Valuation:
$8,800
Permit #:
BLDG-2021-03878
Status:
final
Fee:
$391
Permit Type:
N/A
Building Type:
N/A
Addition three mini splits extend existing gas pipe approx. 15
Valuation:
N/A
Permit #:
M2108-088
Status:
final
Fee:
$67
Permit Type:
Residential mecha...
Building Type:
N/A
Repair fire damage remove interior down to studs/install
Valuation:
N/A
Permit #:
B2108-073
Status:
final
Fee:
$381
Permit Type:
Residence alter
Building Type:
N/A
Das residence - voluntary seismic upgrades to existing home foundation - no work done on addition under b020476
Valuation:
$5,000
Permit #:
BLDG-2020-01629
Status:
final
Fee:
$258
Permit Type:
N/A
Building Type:
N/A
Type: building single family - bsf class: alteration to structure or system, , cuhaciyan- voluntary seismic retrofit
Valuation:
N/A
Permit #:
BSF19-10031
Status:
final
Fee:
$284
Permit Type:
N/A
Building Type:
N/A
Replace existing valves and replace water tank
Valuation:
N/A
Permit #:
P2107-038
Status:
final
Fee:
$107
Permit Type:
Standard plumbing...
Building Type:
N/A
Voluntary seismic retrofit bolting foundation
Valuation:
N/A
Permit #:
24 113888 BU
Status:
issued
Fee:
$433
Permit Type:
N/A
Building Type:
N/A
Seismic retrofit stfi voluntary engineered seismic retrofit for single family residence subject to field inspection stfi
Valuation:
$6,000
Permit #:
6747634-CN
Status:
issued
Fee:
$396
Permit Type:
Add/alt
Building Type:
Single family/duplex
Project name: walker seismic retrofit & structural alter
Valuation:
N/A
Permit #:
BLD21-0447
Status:
issued
Fee:
$496
Permit Type:
N/A
Building Type:
N/A
Type: building single family - bsf class: alteration to structure or system, , romer residence: voluntary seismic retrofit
Valuation:
N/A
Permit #:
BSF19-01064
Status:
final
Fee:
$450
Permit Type:
N/A
Building Type:
N/A
Seismic Northwest LLP Reviews
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Seismic Northwest LLP License info
License Not Verified
| License # | SEISMNL840CJ |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Partnership |
| Business Type | Limited Liability Partnership |
- When BuildZoom last verified this license, it had an expiration date of February, 2026. Check the current license status of Seismic Northwest LLP with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | SEISMNL840CJ |
| Status | Inactive |
| City | Marysville |
| Type | Contractor |
| Business Type | Limited Liability Partnership |
- According to the The City of Marysville, Washington, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Seismic Northwest LLP at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | SEISMNL840CJ |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Partnership |
- According to the Washington State Department of Labor & Industries, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Seismic Northwest LLP at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Seismic Northwest LLP, log in and update your license info in the “Edit Profile” tab.
Insured
| Insurer | Houston Specialty Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Wesco Insurance Co |
| Bond Value | $12,000 |
164
Permits
- Building permit records show that Seismic Northwest LLP has worked on 164 permitted projects.
Seismic Northwest LLP Employees
RA
Rocky John Adams
Governing Persons/Partner/Member
SC
Samuel James Cornelius
Partner/Member