Updated: May 12, 2026
Location and Projects
Address
451 DUVALL AVE NE, Renton, WA, 98059
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Square One Custom Construction
Their BuildZoom score of 0 does not rank in the top 50% of Washington contractors.
If you are thinking of hiring Square One Custom LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Square One Custom LLC Services
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Square One Custom LLC Contact Information
Phone Number: (425) 802-8923
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Address: 451 DUVALL AVE NE, Renton, WA 98059
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Building Permits by Square One Custom LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Demolition of existing house and construction of new single family residence. **demo done under 18-104304 be. includes clearing & grading row storm connection. **add on plumbing and mechanical and electrical
Valuation:
N/A
Permit #:
17 130089 BS
Status:
final
Fee:
$15,883
Permit Type:
N/A
Building Type:
N/A
Monsef donogh design group llc. minor relocation of interior partition walls new entrance and floor finish. creation of offices studio area storage area meeting rom and lobby area. 1465 sq ft in a 21, 800 sq ft 2 story building
Valuation:
$15,000
Permit #:
B18005785
Status:
complete
Fee:
$604
Permit Type:
N/A
Building Type:
N/A
Honji single family residence, honji single family residence
Valuation:
N/A
Permit #:
BLD16-00221
Status:
final
Fee:
$42,678
Permit Type:
N/A
Building Type:
N/A
Rolf new single family residence. new single family residence combination permit. fire sprinklers required
Valuation:
$435,703
Permit #:
B16002423
Status:
complete
Fee:
$17,536
Permit Type:
N/A
Building Type:
N/A
Building - building demolition - single family residence
2017-05-10
Demolish 2070 sq ft single family residence and return to level grade. all electrical disconnect per current nec. disposeof waste to an approved waste site. provide approved erosion control measures during demolition. provide septic tank decommissioning prior to final
Valuation:
N/A
Permit #:
B17000989
Status:
complete
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
Rev3-demo/rebuild 2561 sq ft single family residence w 435sf garage
Valuation:
N/A
Permit #:
2207-178
Status:
final
Fee:
$20,573
Permit Type:
N/A
Building Type:
N/A
Honji-highgrove lot 1- adu guest suite, remodel basement into a 908 sqft guest suite
Valuation:
N/A
Permit #:
BLD19-00134
Status:
final
Fee:
$1,330
Permit Type:
N/A
Building Type:
N/A
Nguyen accessory dwelling unit (adu)/garage. construct 797 sq ft adu and attached 200 sq ft garage b16003589 new single family residence on same lot
Valuation:
$102,348
Permit #:
B17000143
Status:
complete
Fee:
$12,232
Permit Type:
N/A
Building Type:
N/A
Rev3-new 4362sf single family residence on vacant lot
Valuation:
N/A
Permit #:
1803-256
Status:
expired
Fee:
$36,938
Permit Type:
N/A
Building Type:
N/A
Demolition & construction of new single family residence with new water meter/service 17 130089 bs
Valuation:
N/A
Permit #:
18 128979 UC
Status:
final
Fee:
$1,980
Permit Type:
N/A
Building Type:
N/A
Demolition of existing house and construction of new single family residence.
Valuation:
N/A
Permit #:
18 110716 BS
Status:
plancheck
Fee:
$6,887
Permit Type:
N/A
Building Type:
N/A
Tree protection for park trees
Valuation:
N/A
Permit #:
1904-076
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
Reconnect side sewer
Valuation:
N/A
Permit #:
1912-054
Status:
final
Fee:
$278
Permit Type:
N/A
Building Type:
N/A
1.5 meter 2 svc branch & supply line meter to house*
Valuation:
N/A
Permit #:
1804-050
Status:
final
Fee:
$24,372
Permit Type:
N/A
Building Type:
N/A
Demolish 2070 sq ft single family residence and return to level grade. all electrical disconnect per current nec. disposeof waste to an approved waste site. provide approved erosion control measures during demolition. provide septic tank decommissioning prior to final
Valuation:
N/A
Permit #:
B17000989
Status:
Issued
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
Demolition of existing structure
Valuation:
N/A
Permit #:
18 104304 BE
Status:
final
Fee:
$801
Permit Type:
N/A
Building Type:
N/A
Drainage to lake
Valuation:
N/A
Permit #:
1909-109
Status:
final
Fee:
$1,341
Permit Type:
N/A
Building Type:
N/A
Construct 797 sq ft adu and 200 sq garage b16003589 new single family residence on same lot
Valuation:
N/A
Permit #:
B17000143
Status:
Pending
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Construction of new sfr, 15-122347
Valuation:
N/A
Permit #:
15 129788 UB
Status:
final
Fee:
$629
Permit Type:
N/A
Building Type:
N/A
Project name: rainier crest div 3 - lot 218 - new single family residence
Valuation:
N/A
Permit #:
ROW17-037
Status:
issued
Fee:
$210
Permit Type:
N/A
Building Type:
N/A
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Square One Custom LLC Reviews
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Square One Custom LLC License info
License Not Verified
| License # | SQUAROC854N1 |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of August, 2019. Check the current license status of Square One Custom LLC with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | SQUAROC854N1 |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, 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 Square One Custom LLC 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
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- *No active license on file. If you are Square One Custom LLC, click “This is My Business” to update your information.
Insured
| Insurer | Kinsale Insurance Company |
| Insured up to | $2,000,000 |
Bonded
| Bonded Agent | American Contractors Indem Co |
| Bond Value | $12,000 |
16
Permits
- Building permit records show that Square One Custom LLC has worked on 16 permitted projects.
Square One Custom LLC Employees
DE
Donogh, Joy E
Partner/Member
JD
Joy Donogh
Partner/Member
MP
Monsef, Stanley P
Partner/Member
SD
Scott Donogh
Partner/Member
SM
Stanley Monsef
Partner/Member