Updated: Mar 28, 2026
Location and Projects
Address
Po Box 492 St Helens, Saint Helens, OR, 97051
Use our bidding system to
request a quote
Northwest Plumbing Services
Northwest Plumbing Services, St, Po Box 492, SAINT HELENS, OR (Owned by: Srdh Plumbing Inc) holds a license and 2 other licenses according to the Oregon license board.
Their BuildZoom score of 112 ranks in the top 3% of 62,733 Oregon licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Northwest Plumbing Services, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Northwest Plumbing Services Services
Start a project today:
Northwest Plumbing Services Contact Information
Phone Number: (503) 366-1298
Edit
Address: Po Box 492 St Helens, SAINT HELENS, OR 97051
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Northwest Plumbing Services SAINT HELENS
Quality
112
97th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Northwest Plumbing Services has a BuildZoom score of 112, which places them above 97% of 62,733 contractors in Oregon.
Activity
|
10 projects
|
2025 |
|
35 projects
|
2024 |
|
82 projects
|
2023 |
Our building permit records indicate that Northwest Plumbing Services has worked on at least
127.0 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
|
18 projects
|
New Constructions |
|
15 projects
|
Home Additions |
|
125 projects
|
Plumbing projects |
|
14 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Northwest Plumbing Services mostly works on
plumbing project
and new construction
projects.
Pricing
|
84 projects
|
< $5k |
|
7 projects
|
$5k-$20k |
|
3 projects
|
$20k-$50k |
|
6 projects
|
$100k-$250k |
|
9 projects
|
$250k-$500k |
|
2 projects
|
$500k-$1mil |
The typical size of their permits is approximately $2,000. This graph shows the distribution of these job values.
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 Northwest Plumbing Services
This is a sample of this contractor's permits. Click here to access their complete permit history.
Residential 1 & 2 family dwelling (new only) limited
2025-10-22
New two story single family dwelling 2248 sq ft habitable space 730 sq ft garage 64 sq ft covered porch 120 sq ft covered patio. + backflow
Valuation:
$420,953
Permit #:
749-25-000102-DWL
Status:
final
Fee:
$29,297
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2025-09-19
New one story single family dwelling 1843 sq ft habitable space 579 sq ft garage 150 sq ft porch cover + backflow
Valuation:
$354,928
Permit #:
749-25-000222-DWL
Status:
issued
Fee:
$27,690
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-04-08
New two story single family floating home: 2018 sq ft habitable space new 1 story 503 sq ft tender float 295 sq ft float deck
Valuation:
$525,000
Permit #:
749-24-000069-DWL
Status:
issued
Fee:
$6,633
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-08-06
**digital review** new 2024 sq ft 2 story single family dwelling + 425 sq ft garage + 120 sq ft deck + 210 sq ft covered porches. 5 bedroom 2.5 bathroom + backflow
Valuation:
$280,000
Permit #:
749-23-000372-DWL
Status:
issued
Fee:
$24,120
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-08-08
Valley view dr; **digital review** new two story single family dwelling 2156 sq ft habitable space 600 sq ft garage 188 sq ft porch cover 200 sq ft deck + backflow
Valuation:
$300,000
Permit #:
749-24-000038-DWL
Status:
final
Fee:
$27,214
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-08-11
**digital review** new two story single family dwelling 2415 sq ft habitable space 630 sq ft garage 136 sq ft porch cover 200 sq ft deck + backflow
Valuation:
$295,000
Permit #:
749-23-000373-DWL
Status:
issued
Fee:
$29,103
Permit Type:
New
Building Type:
N/A
Restaurant kitchen: plumbing for grease trap dishwasher compartment sink two handwash sinks and repipe to water heater bar area: plumbing for dishwasher mop sink handwash sink and glass rinser bathrooms: repipe to two lavs and two toilets
Valuation:
$10,000
Permit #:
749-23-000206-PLM
Status:
issued
Fee:
$628
Permit Type:
Replacement
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-09-06
West st; new two story attached single family dwelling 1563 sq ft habitable space 240 sq ft garage 82.5 sq ft porch cover + backflow
Valuation:
$180,000
Permit #:
749-24-000204-DWL
Status:
issued
Fee:
$30,347
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-09-06
West st; new two story attached single family dwelling 1563 sqft habitable space 240 sqft garage 82.5 sqft porch cover + backflow
Valuation:
$180,000
Permit #:
749-24-000203-DWL
Status:
issued
Fee:
$30,347
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-09-06
West st; new two story attached single family dwelling 1563 sq ft habitable space 240 sq ft garage 82.5 sq ft porch cover + backflow
Valuation:
$180,000
Permit #:
749-24-000202-DWL
Status:
issued
Fee:
$30,347
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2024-09-06
West st; new two story attached single family dwelling1563 sq ft habitable space 240 sq ft garage 82 sq ft porch cover + backflow
Valuation:
$180,000
Permit #:
749-24-000205-DWL
Status:
issued
Fee:
$19,440
Permit Type:
New
Building Type:
N/A
Structural addition of 642 sq ft in-laws quarters bedroom bathroom and sitting area (structural only)
Valuation:
$205,000
Permit #:
749-23-000135-STR
Status:
final
Fee:
$4,506
Permit Type:
Alteration
Building Type:
N/A
465 n columbia river hwy st. helens or; 5, 436 sq ft (3600 main level + 1836 basement) new commercial building for automotive fast lube service
Valuation:
$450,000
Permit #:
749-23-000069-STR
Status:
filed
Fee:
$1,737
Permit Type:
New
Building Type:
N/A
1624 sq ft single family dwelling and 684 sq ft garage will change double-wide to storage only at later date
Valuation:
$300,000
Permit #:
192-22-001368-DWL
Status:
issued
Fee:
$5,431
Permit Type:
New
Building Type:
N/A
Residential 1 & 2 family dwelling (new only) limited
2025-10-22
New two-story single family dwelling 2376 sq ft habitable space 692 sq ft garage 64 sq ft covered porch 120 sq ft covered patio w/backflow
Valuation:
$500
Permit #:
749-25-000126-DWL
Status:
final
Fee:
$29,627
Permit Type:
New
Building Type:
N/A
Plumbing permit for childcare facility (permit pulled to complete expired permit 14504a): repipe to 4 fixtures in basement replumbing uptairs install (2) handwash sinks (2) lavs (2) toilets (1) 3-compartment sink (1) dishwasher & (1) clothes washer
Valuation:
N/A
Permit #:
749-22-000512-PLM-01
Status:
issued
Fee:
$319
Permit Type:
N/A
Building Type:
N/A
Kitchen: plumbing for grease trap dishwasher compartment sink (2) handwash sinks & repipe to water heater. bar area: plumbing for dishwasher mop sink handwash sink & glass rinser. bathrooms: repipe to (2) lavs & (2) toilets
Valuation:
N/A
Permit #:
749-23-000206-PLM
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Permit for re-plumbing work originally pulled with permit cc20-057. replacement of water service line to house and complete interior (1 bathroom kitchen laundry & water heater)
Valuation:
N/A
Permit #:
191-24-000015-PLM
Status:
issued
Fee:
$394
Permit Type:
Repair
Building Type:
N/A
New sfd- 3000sqft house w 520sqft garage and 1200sqft covered porches
Valuation:
$576,568
Permit #:
192-23-000786-DWL
Status:
issued
Fee:
$16,490
Permit Type:
New
Building Type:
N/A
Move grease trap near existing 4 cleanout. hook exit of grease trap to 4 sanitary sewer
Valuation:
N/A
Permit #:
749-25-000096-PLM
Status:
final
Fee:
$199
Permit Type:
Alteration
Building Type:
N/A
Similar Contractors See more
License # PB871
Oregon City, OR
126
BZ Score
$9.1K
Avg Project
-
Projects
124
BZ Score
$6K
Avg Project
-
Projects
126
BZ Score
$83.1K
Avg Project
-
Projects
Northwest Plumbing Services Reviews
BuildZoom hasn't received any reviews for Northwest Plumbing Services. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Northwest Plumbing Services License info
Verified License
| License # | 77141 |
| Status | Active |
| State | Oregon |
| Business Type | Corporation |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Northwest Plumbing Services at the Oregon Construction Contractors Board (CCB).
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 77142 |
| Status | Active |
| State | Oregon |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of May, 2014. Check the current license status of Northwest Plumbing Services with the Oregon Construction Contractors Board (CCB)
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | SRDHPPI893DH |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- 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. If this is your business, please update your license status.
Check this license's status for Northwest Plumbing Services at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
112
BuildZoom Score
Insured
| Insurer | Contractors Bonding Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | 27 Contractors Bonding Ins Co |
| Bond Value | $15,000 |
838
Permits
- Building permit records show that Northwest Plumbing Services has worked on 838 permitted projects.
Northwest Plumbing Services Employees
DS
David Sass
President
MS
Mindy Sass
Vice President
SB
Sass, David Bruce
Corporate Officer
SL
Sass, Mindy L
Vice President
SL
Sass, Mindy Leigh
Corporate Officer
SI
Srdh Plumbing Inc
Owner