Updated: Aug 16, 2026
Location and Projects
Address
12556 7TH AVE NW, Seattle, WA, 98177
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Alhadeff Group Construction
Founded in 2006 by Sam Alhadeff, Alhadeff Group LLC focuses on new construction, home additions, and large-scale residential remodels in Seattle and the surrounding areas, including Mercer Island. Sam Alhadeff, born and raised in Mercer Island, holds a Bachelor of Science in Construction Management from the University of Washington. His background includes international project management with Hensel Phelps and leadership roles in residential building with the Lozier Group before establishing his own firm. Alhadeff Group’s residential projects often incorporate interior design services led by Renee Antezana, an interior designer with experience in both high-end residential and commercial spaces, whose background includes projects for major brands in New York City. The company serves homeowners seeking comprehensive construction and design solutions in the greater Seattle area.
Alhadeff Group LLC Services
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Alhadeff Group LLC Contact Information
Phone Number: (425) 269-3014
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Address: 12556 7TH AVE NW, Seattle, WA 98177
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Alhadeff Group LLC Seattle
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Alhadeff Group LLC has a BuildZoom score of 108, which places them above 95% of 128,670 contractors in Washington.
Activity
|
6 projects
|
2025 |
|
5 projects
|
2024 |
|
5 projects
|
2023 |
Our building permit records indicate that Alhadeff Group LLC has worked on at least
16.0 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
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Alhadeff Group LLC mostly works on
home addition
projects.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$100k-$250k |
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Alhadeff dadu side sewer sanitary to existing side sewer for new dadu per plan 6954932-cn (drainage review not required). no drainage can go to the existing side sewer. roof downspouts can discharge to splash blocks or an onsite drywell. no work in right of way
Valuation:
$500
Permit #:
7015918-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Dana alhadeff condo remodel interior alterations to existing condo (unit #6) in multifamily structure subject to field inspection (stfi)
Valuation:
$145,000
Permit #:
7059571-CN
Status:
triage
Fee:
N/A
Permit Type:
Add/alt
Building Type:
Multifamily
Type: building single family class: alteration to structure or system, , van doren remodel - interior renovation to existing single family home. affected areas include kitchen bathrooms and laundry. mechanical work is not included.; plumbing work is not included;
Valuation:
N/A
Permit #:
BSF21-02169
Status:
final
Fee:
$1,575
Permit Type:
N/A
Building Type:
N/A
Electrical to installation of automated gate system
Valuation:
N/A
Permit #:
ELE25-1487
Status:
final
Fee:
$302
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: alteration to structure or system, , mechancial for-mozingo (bsf21-06223): : rebuild dormer interior remodel rebuild deck
Valuation:
N/A
Permit #:
MSF21-07951
Status:
final
Fee:
$286
Permit Type:
N/A
Building Type:
N/A
Addition over an existing impervious deck using the existing floor joists for the addition small entry porch addition and minor non bearing wall revision to master bedroom. there is an overall reduction in impervious surface no tree removal no excavation and overall existing drainage will not be impacted or revised. does not include clear & grade. includes mechanical and electrical. d... see more
Valuation:
N/A
Permit #:
18 115815 BR
Status:
final
Fee:
$2,998
Permit Type:
N/A
Building Type:
N/A
811 sq ft 2nd story addition & 16 sq ft addition to main
Valuation:
N/A
Permit #:
2209-158
Status:
final
Fee:
$9,120
Permit Type:
N/A
Building Type:
N/A
Mclean side sewer repair existing side sewer. no work in row
Valuation:
N/A
Permit #:
6944325-SS
Status:
issued
Fee:
$280
Permit Type:
None
Building Type:
Single family/duplex
Closed as incomplete - expired permit. install new sewer new tight line for downspouts assoc building permit 6446833 (mcb 4/28/2017: revised to be an add/alt for main residence reconnection and extended to 8/31/207. dadu was not connected with this permit. a separate ss permit will be required if the dadu is constructed and connected to the side sewer.) (mcb 4/18/2018: revised per pos... see more
Valuation:
N/A
Permit #:
6479774-SS
Status:
complete
Fee:
$1,035
Permit Type:
Addition/alteration
Building Type:
Single family/duplex
Addition 813 sf upper level to existing single family residence
Valuation:
N/A
Permit #:
1910-022
Status:
final
Fee:
$4,208
Permit Type:
N/A
Building Type:
N/A
Adding 688 sf addition 334 sf covered patio & remodel
Valuation:
N/A
Permit #:
2212-162
Status:
issued
Fee:
$12,212
Permit Type:
N/A
Building Type:
N/A
Antezana/faherty addition construct substantial alterations to addition second floor to an existing single family residence per plan
Valuation:
$80,000
Permit #:
6696307-CN
Status:
issued
Fee:
$3,534
Permit Type:
Add/alt
Building Type:
Single family/duplex
Installation of automated gate system
Valuation:
N/A
Permit #:
BLD25-1486
Status:
issued
Fee:
$431
Permit Type:
N/A
Building Type:
N/A
Signage
Valuation:
N/A
Permit #:
BLDG23-0767
Status:
complete
Fee:
$287
Permit Type:
Permanent
Building Type:
N/A
Smith fire systems
Valuation:
N/A
Permit #:
2020-0962-ELVO
Status:
issued
Fee:
$136
Permit Type:
Low voltage
Building Type:
N/A
1 meter and service branch supply line meter to house tbd*
Valuation:
N/A
Permit #:
2303-003
Status:
final
Fee:
$8,509
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BURN-26-0516
Status:
final
Fee:
$18
Permit Type:
N/A
Building Type:
Residential
Tree protection only
Valuation:
N/A
Permit #:
2306-253
Status:
final
Fee:
$188
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BURN-25-0680
Status:
final
Fee:
$18
Permit Type:
N/A
Building Type:
Residential
Sabban-boggan drainage new drainage to onsite infiltration facility per plan for addition to existing single family under 6875563-cn. no sanitary work proposed. no work in right of way. includes onsite stormwater management facilities (9/21/2023 eld: see revision 6875563-cn-005 for changes to patio. surface collect patio and pump footing and stairs to separate drywell) (3/1/23 vsp: on... see more
Valuation:
$10,000
Permit #:
6948202-SS
Status:
issued
Fee:
$564
Permit Type:
New
Building Type:
Single family/duplex
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173
BZ Score
-
Avg Project
-
Projects
164
BZ Score
-
Avg Project
-
Projects
159
BZ Score
$32.4K
Avg Project
-
Projects
Alhadeff Group LLC Reviews
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Alhadeff Group LLC License info
License Not Verified
| License # | ALHADGL915QF |
| 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 July, 2026. Check the current license status of Alhadeff Group 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 # | ALHADGL915QF |
| 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 Alhadeff Group 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 # | ALHADH 945ND |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, General |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of February, 2011. Check the current license status of Alhadeff Group LLC with the Washington State Department of Labor & Industries
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ALHADGL915QF |
| Status | Inactive |
| City | Sammamish |
| Type | Contractor |
| Business Type | Limited Liability Company |
- According to the The City of Sammamish, 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 Alhadeff Group LLC at the The City of Sammamish, WA.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Insured
| Insurer | Nautilus Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Rli Ins Co |
| Bond Value | $12,000 |
43
Permits
- Building permit records show that Alhadeff Group LLC has worked on 43 permitted projects.
Alhadeff Group LLC Employees
AH
Alhadeff Homes
AJ
Alhadeff, Sam J
Owner
SA
Sam Alhadeff
Owner
SA
Sam Alhadeff
Partner/Member