Updated: Aug 06, 2026
Location and Projects
Address
3510 ACADEMY DR SE, Auburn, WA, 98092
Use our bidding system to
request a quote
Epsilon Construction LLC
Founded by Greg Gratias in 1978, Epsilon Construction LLC operates from Auburn, WA and currently serves the greater Seattle area, with a strong focus on addressing local housing needs. The company specializes in the construction of Accessory Dwelling Units (ADUs) and Detached Accessory Dwelling Units (DADUs), providing solutions aligned with recent supportive legislation in Seattle designed to expand homeowner participation in ADU development. Epsilon Construction continues to offer its core residential construction, design, and build services for homeowners across the region. Over decades in business, the firm has evolved from a personal venture into a family enterprise. Epsilon’s portfolio illustrates a commitment to increasing property value and income potential for property owners through focused ADU and DADU projects in the current Seattle housing market.
Epsilon Construction LLC Services
Start a project today:
Epsilon Construction LLC Contact Information
Phone Number: (253) 735-1286
Edit
Address: 3510 ACADEMY DR SE, Auburn, WA 98092
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Epsilon Construction LLC Auburn
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Epsilon Construction LLC has a BuildZoom score of 106, which places them above 93% of 128,670 contractors in Washington.
Activity
|
2 projects
|
2025 |
|
3 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Epsilon Construction LLC 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
|
$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.
Building Permits by Epsilon Construction LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
No Description Available
Valuation:
$360,000
Permit #:
25-1101
Status:
issued
Fee:
$20,224
Permit Type:
N/A
Building Type:
Residential
Gibson residence hall updating existing building for safety and modification of space to create 15 two-bedroom apartment units
Valuation:
N/A
Permit #:
GRA25-0019
Status:
triage
Fee:
$9,318
Permit Type:
N/A
Building Type:
N/A
Gratias addition, addition and remodel of existing single family residential home
Valuation:
N/A
Permit #:
BLD18-00251
Status:
final
Fee:
$5,579
Permit Type:
N/A
Building Type:
N/A
New fire line permit
Valuation:
N/A
Permit #:
FIRE22-2098
Status:
issued
Fee:
$674
Permit Type:
Sprinkler undergr...
Building Type:
N/A
Pin24-0800 reconstruction of house due to fire loss
Valuation:
N/A
Permit #:
OTC24-1101
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Subject to field inspection: like-for-like replacement of fire damaged framing and replacement of sheet rock
Valuation:
N/A
Permit #:
ADDC19-0115
Status:
complete
Fee:
$791
Permit Type:
N/A
Building Type:
N/A
Over the counter plan review: like-for-like fire damage repair except for new i-joist (insr20-0008)
Valuation:
$58,685
Permit #:
ADDC20-0117
Status:
complete
Fee:
$1,029
Permit Type:
N/A
Building Type:
N/A
Ryan addition addition to existing residence
Valuation:
N/A
Permit #:
BLD23-00194
Status:
issued
Fee:
$33,185
Permit Type:
N/A
Building Type:
N/A
Over the counter review: fire damage inspection report for single-family residence on parcel # 7202331090
Valuation:
N/A
Permit #:
INSR20-0008
Status:
complete
Fee:
$366
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
22 103163 000 00 SF
Status:
issued
Fee:
$1,759
Permit Type:
Addition
Building Type:
N/A
Marta: rebuild fire damaged single family residence, marta: rebuild fire damaged single family residence
Valuation:
N/A
Permit #:
ALT18-0079
Status:
expired
Fee:
$3,801
Permit Type:
N/A
Building Type:
N/A
Subject to field inspection: like-for-like tree damage repair to single-family residence
Valuation:
N/A
Permit #:
ADDC19-0329
Status:
complete
Fee:
$472
Permit Type:
N/A
Building Type:
N/A
Interior remodel , (kjoh) interior remodel with some bearing wall modification
Valuation:
N/A
Permit #:
BLD2018-04720
Status:
complete
Fee:
$2,288
Permit Type:
N/A
Building Type:
N/A
New sanitary connection fromdadu. assoc. building permit #65573886
Valuation:
N/A
Permit #:
6594099-SS
Status:
complete
Fee:
$375
Permit Type:
N/A
Building Type:
Single family/duplex
Reznichenko res-remodel foyer addition powder room and covrd deck
Valuation:
N/A
Permit #:
ADD21-0012
Status:
final
Fee:
$530
Permit Type:
N/A
Building Type:
N/A
Convert existing garage into a detached accessory dwelling unit for a single-family residence per plan
Valuation:
$50,000
Permit #:
6573886-CN
Status:
complete
Fee:
$1,625
Permit Type:
Add/alt
Building Type:
Single family/duplex
Residential site development inspections (including drainage) reff bprs: 619358
Valuation:
$0
Permit #:
619361
Status:
Final
Fee:
$532
Permit Type:
N/A
Building Type:
N/A
Houston single family residence bedroom addition 10x20 above existing garage
Valuation:
N/A
Permit #:
BLD0706-053
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family residence berg - addition
Valuation:
N/A
Permit #:
ADD07-0007
Status:
final
Fee:
N/A
Permit Type:
Residential addition
Building Type:
N/A
Install extended coverage monitored fire alarm for single family residence bprs #619358
Valuation:
$0
Permit #:
619365
Status:
Final
Fee:
$585
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
173
BZ Score
-
Avg Project
-
Projects
164
BZ Score
-
Avg Project
-
Projects
159
BZ Score
$32.4K
Avg Project
-
Projects
Epsilon Construction LLC Reviews
BuildZoom hasn't received any reviews for Epsilon Construction LLC. 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
Epsilon Construction LLC License info
Verified License
| License # | EPSILCL849Q9 |
| 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 Epsilon 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 # | EPSILCL849Q9 |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of August 2026.
Verify this license's status for Epsilon Construction LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | EPSILCL849Q9 |
| Status | Active |
| City | Sammamish |
| Type | Contractor |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of December, 2021. Check the current license status of Epsilon Construction LLC with the The City of Sammamish, WA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | EPSILCL962NK |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor |
| Business Type | Limited Liability Company |
- 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 Epsilon Construction LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Insured
| Insurer | Western World Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Wesco Insurance Co |
| Bond Value | $12,000 |
21
Permits
- Building permit records show that Epsilon Construction LLC has worked on 21 permitted projects.
Epsilon Construction LLC Employees
BG
Brandon Gratias
Partner/Member
GA
Gratias, Greg Allen
Owner
GG
Greg Gratias
Partner/Member
KG
Kelsey Gratias
Partner/Member
RG
Ryan Gratias
Partner/Member