Updated: Jul 09, 2026
Location and Projects
Address
1910 BICKFORD AVENUE, Snohomish, WA, 98290
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Corstone Contractors Plumber
Based in Snohomish, Washington, Corstone Contractors LLC specializes in commercial construction with a primary focus on tenant improvements, remodels, and ground-up building projects. Serving clients across the Puget Sound region, Corstone’s portfolio includes work in office, retail, medical, restaurant, financial, and industrial spaces. The company manages projects ranging from small-scale interior build-outs to extensive multi-phased developments. Corstone Contractors brings more than two decades of experience—having been established in 2000—to pre-construction planning, design-build delivery, and construction management. Services cover all phases of commercial projects, including budgeting, scheduling, permitting, and coordination with architects and engineers. Corstone’s team supports property owners, developers, and facility managers through collaborative project execution, consistently delivering projects for both private businesses and public clients in Snohomish and surrounding communities.
Corstone Contractors LLC Services
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Corstone Contractors LLC Contact Information
Phone Number: (425) 583-7965
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Address: 1910 BICKFORD AVENUE, Snohomish, WA 98290
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Corstone Contractors LLC Snohomish
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Corstone Contractors LLC has a BuildZoom score of 111, which places them above 96% of 128,670 contractors in Washington.
Activity
|
24 projects
|
2025 |
|
25 projects
|
2024 |
|
40 projects
|
2023 |
Our building permit records indicate that Corstone Contractors LLC has worked on at least
89.0 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
|
41 projects
|
New Constructions |
|
7 projects
|
Commercial Renovations |
|
6 projects
|
Home Additions |
|
16 projects
|
Plumbing projects |
|
7 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Corstone Contractors LLC mostly works on
new construction
and plumbing project
projects.
Pricing
|
1 project
|
< $5k |
|
5 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
4 projects
|
$50k-$100k |
|
4 projects
|
$100k-$250k |
|
3 projects
|
$250k-$500k |
|
8 projects
|
$500k-$1mil |
|
12 projects
|
$1mil+ |
The typical size of their permits is approximately $250,000. 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 Corstone Contractors LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construct autozone addition - expand the existing warehouse space to the west with 18 850 sf of additional storage space driveway loop around and additional parking to include upgrading existing fire hydrant installing one new fire hydrant and live tap per approved construction drawings signed by john cowling on 1/7/2025
Valuation:
N/A
Permit #:
DPW-2025-0143
Status:
approved
Fee:
$29,224
Permit Type:
N/A
Building Type:
N/A
South lake business park building d: 2021 ibc new 9, 998 sq ft (b occupancy) two-story commercial building with two suites on main floor and one suite on upper floor with associated offices restrooms. plumbing + mec deferred
Valuation:
$1,750,000
Permit #:
BLD2024-0538
Status:
filed
Fee:
$16,683
Permit Type:
N/A
Building Type:
Commercial - comm...
Construct new multi-use commercial building. two floors of parking with type 1a construction and 6 floors of residential units with type iiia construction with 139 parking stalls and 178 total residential units. plumbing and mechanical scopes require separate permit applications. related to sdev22-0059 sdev21-0127 and wo21-0077 *** frc23-0137 -07/24/2023 - approved: structural pre-con... see more
Valuation:
$27,500,000
Permit #:
BLDCN21-0013
Status:
final
Fee:
$322,384
Permit Type:
N/A
Building Type:
N/A
Expedited review - establish use and construct mixed-use structure containing 103 dwelling units (apartments) street-level restaurant/retail and internal parking for 6 vehilces def21-0051 - expedited review-1909 fawcett ave apartment project - plywood web joist - cancelled per applicant request oked by hj def21-0052 - expedited review-1909 fawcett ave apartment project - design built ... see more
Valuation:
$8,000,000
Permit #:
BLDCN20-0074
Status:
final
Fee:
$128,611
Permit Type:
N/A
Building Type:
N/A
South lake business park building c: 2021 ibc new 2, 702 sq ft (a-3 occupancy) single-story commercial building for indoor pickle ball court accompanied with two restrooms. mec + plumbing deferred
Valuation:
$575,000
Permit #:
BLD2024-0537
Status:
filed
Fee:
$7,577
Permit Type:
N/A
Building Type:
Commercial - comm...
Installation of 6 new heat pump rtu's with economizers and gas generator to service the new construction addition
Valuation:
$206,542
Permit #:
MECC-2024-2168
Status:
complete
Fee:
$117
Permit Type:
N/A
Building Type:
N/A
***submitting firewall revision***construction of a ground up cmu addition to an existing autozone
Valuation:
$2,314,148
Permit #:
BLDC-2024-2245
Status:
complete
Fee:
$21,451
Permit Type:
N/A
Building Type:
N/A
Install 182 package terminal heat pumps 172 whole house exhaust fans 36 restroom exhaust fans 178 fresh air inlets ductwork 1 split system heat pump 1 remote terminal unit 1 split system heat pump for elevator 5 exhaust fans 10 transfer air fans 4 stairwell and elevator pressurization fans 1 supply air fan ductwork and accessories at the camden apartments. ***associated with building ... see more
Valuation:
$850,000
Permit #:
MECHC23-0210
Status:
final
Fee:
$44,082
Permit Type:
New
Building Type:
N/A
Site development and site plan upgrades to make the site usable for the enhanced services facilities (esf) requirements. the proposed project limits and clearing area consist of approximately 33 800 sq. ft. this includes area for the plaza and the parking lot work
Valuation:
$100,000
Permit #:
SDEV23-0038
Status:
issued
Fee:
$6,985
Permit Type:
Commercial
Building Type:
N/A
Insite salmon bay storage four story semi heated warehouse space with heating only heat pump system. fully conditioned accessory leasing office. . per plans
Valuation:
$1,080,000
Permit #:
7005198-ME
Status:
issued
Fee:
$10,132
Permit Type:
N/A
Building Type:
Commercial
New construction of a 78 000 sf building and site improvements for floor & decor a hard surface flooring retailer. *plumbing and mechanical reviewed - separate permits required* **frc21-0044 approved 3/18/2021 structural revisions.** *** frc21-0054 - approved 03/18/2021 for update to the building footprint.*** ***frc21-0072 approved 3/14/2021 for updates to architectural drawings.***
Valuation:
$5,502,196
Permit #:
BLDCN20-0054
Status:
final
Fee:
$136,451
Permit Type:
N/A
Building Type:
N/A
Building a new commercial restaurant
Valuation:
$5,333,925
Permit #:
UT25-0118
Status:
issued
Fee:
$539
Permit Type:
Water
Building Type:
N/A
Renovate existing building with vestibule addition on south side of the site. **plumbing & mechanical scopes will require separate permits**
Valuation:
$4,000,000
Permit #:
BLDCA23-0108
Status:
issued
Fee:
$68,143
Permit Type:
Addition and remo...
Building Type:
N/A
Demolish existing 1136 sf commercial building (1 of 3) to prepare for apartment construction. related to democ20-0011 and democ20-0012
Valuation:
$962,500
Permit #:
DEMOC20-0010
Status:
expired
Fee:
$306
Permit Type:
N/A
Building Type:
N/A
Chick-fil-a: demolish of the existing gas station and constrcution of a new 5, 182sf chick-fil-a restaurant with 54 parking s and a 23 vehicle stack in the drive-thru lane. building frame will be fabricated per plans off site
Valuation:
$1,100,000
Permit #:
BLDC-024099-2020
Status:
issued
Fee:
$21,334
Permit Type:
New
Building Type:
N/A
Construction of a new 5 586 sf chick-fil-a restaurant with a double drive-through two exterior drive-through canopies and a trash enclosure
Valuation:
$15,000
Permit #:
F24-0268
Status:
final
Fee:
$345
Permit Type:
N/A
Building Type:
N/A
2 new single user restrooms a high/low drinking fountain and one breakroom with sink to be constructed in the new ground up addition
Valuation:
$18,326
Permit #:
PLBC-2024-2167
Status:
complete
Fee:
$217
Permit Type:
N/A
Building Type:
N/A
Contractor: corstone contractors llc 49010185-00 rw contact: john lapeer phone: (425)870-5894 ; email: [email protected] address: 1220 w 4th ave permit issued by litzy olivera
Valuation:
N/A
Permit #:
FHM-2025-0648
Status:
complete
Fee:
$490
Permit Type:
N/A
Building Type:
N/A
Underground utility connections to new construction project. pot hole and located existing utilities connection to existing utilities install of new utilities utilities are water sewer storm electrical communications and gas
Valuation:
N/A
Permit #:
ROW24-0238
Status:
issued
Fee:
$648
Permit Type:
Outside
Building Type:
N/A
Mechanical permit for cmn-2020-00332 a 6593 sf veterinary clinic (2) hrv-1 gas lines captured on the plumbing per(plm-2021-00318) (2) electric wall heater schedule (5) remote terminal unit gas lines captured on the plumbing per(plm-2021-00318) (17) fan (4) roof hood
Valuation:
$250,000
Permit #:
MCH-2021-00686
Status:
expired
Fee:
N/A
Permit Type:
Mechanical
Building Type:
N/A
Similar Contractors See more
134
BZ Score
-
Avg Project
-
Projects
127
BZ Score
$89.3K
Avg Project
-
Projects
144
BZ Score
$20K
Avg Project
-
Projects
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Verified License
BuildZoom confirmed this contractor's license
Corstone Contractors LLC License info
License Not Verified
| License # | CORSTCL984KZ |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Corstone Contractors LLC with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CORSTEL983BD |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Corstone Contractors LLC 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 # | 26717 |
| Status | Active |
| City | Pasco |
| Type | Contr General |
- When BuildZoom last verified this license, it had an expiration date of May, 2016. Check the current license status of Corstone Contractors LLC with the The City of PASCO, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CORSTEL983BD |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Corstone Contractors LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CORSTCL984KZ |
| Status | Inactive |
| City | Marysville |
| Type | Contractor |
- According to the The City of Marysville, Washington, 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 Corstone Contractors LLC at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 9850 |
| Status | Inactive |
| City | Pasco |
| Type | Contr General |
- According to the The City of PASCO, WA, 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 Corstone Contractors LLC at the The City of PASCO, WA.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Insured
| Insurer | West American Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Ohio Cas Ins Co |
| Bond Value | $30,000 |
329
Permits
- Building permit records show that Corstone Contractors LLC has worked on 329 permitted projects.
Corstone Contractors LLC Employees
CH
Cole, Gordon Howad
Owner
GC
Gordon Cole
Partner/Member
TC
Tapert, Mark Christopher
Owner