Updated: Mar 31, 2026
Location and Projects
Address
4001 Aurora Ave N, Seattle, WA, 98103
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Haas Development & Construction Photos
Haas Development & Construction Plumber
Haas Development and Construction is Seattle's first choice for home remodeling, custom cabinets, ADU/DADUs, and new builds. Our local experts offer full residential construction services, working with you through every phase of your project.
From BuildZoom: Haas Development & Construction, 4001 Aurora Ave N, Seattle, WA (Employee: Delafield, David Hass) holds a Construction Contractor, General license and 2 other licenses according to the Tukwila license board.
Their BuildZoom score of 109 ranks in the top 5% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Haas Development & Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Haas Development & Construction Services
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Haas Development & Construction Contact Information
Phone Number: (206) 494-3369
Address: 4001 Aurora Ave N, Seattle, WA 98103
Haas Development & Construction Seattle
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Haas Development & Construction has a BuildZoom score of 109, which places them above 95% of 128,670 contractors in Washington.
Activity
|
5 projects
|
2025 |
|
7 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Haas Development & Construction has worked on at least
13.0 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
|
New Constructions |
|
11 projects
|
Plumbing projects |
|
10 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Haas Development & Construction mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
8 projects
|
$100k-$250k |
The typical size of their permits is approximately $175,000. 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 Haas Development & Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Cobain dadu new sanitary and add/alt drainage to existing side sewer to combined main. per plan 7060973-cn for new dadu with existing single family residence to remain. 1 sanitary pump per permit application. drainage review not required. no work in right of way
Valuation:
$175,000
Permit #:
7090700-SS
Status:
issued
Fee:
$1,105
Permit Type:
Addition/alteration
Building Type:
Single family/duplex
Neumann dadu sanitary to existing side sewer to sanitary main for new dadu per 7051318-cn. drainage review not required. drainage to splash blocks or onsite drywell. drainage cannot discharge to side sewer. no work in right of way
Valuation:
$175,000
Permit #:
7093035-SS
Status:
complete
Fee:
$655
Permit Type:
None
Building Type:
Single family/duplex
Bowen dadu sanitary to existing side sewer to sanitary main for new dadu per 6986886-cn (no drainage review required). downspouts cannot discharge to the side sewer. downspouts ok to splash blocks or an onsite drywell. no work in right of way. ok to revise this permit so the downspouts can discharge to the drainage culvert in n 127th st upon request
Valuation:
$200,000
Permit #:
7003019-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Delafield dadu new sanitary to existing onsite sanitary only side sewer for detached accessory dwelling unit (dadu). related permit under 6898416-cn. drainage review not required drainage not included
Valuation:
$175,000
Permit #:
7013938-SS
Status:
complete
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Walker dadu connecting the dadu's plumbing outlet to the existing sanitary only side sewer. no work in row. no drainage review was done for this project. no drainage work
Valuation:
N/A
Permit #:
7066327-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Project name: hacker interior residential remodel, , interior remodel work is proposed from within the basement of an existing 1-story single-family residence with a daylight basement. the remodel work involves the removal of load-bearing walls. the existing floor framing will be resupported with new engineered wood beams wood posts and concrete spread footings where required
Valuation:
N/A
Permit #:
BLD23-0090
Status:
final
Fee:
$736
Permit Type:
N/A
Building Type:
N/A
Thapa dadu new dadu: sanitary to existing side sewer to sanitary main. no drainage work. no drainage review. related permit: 6980854-cn
Valuation:
$175,000
Permit #:
7013171-SS
Status:
issued
Fee:
$504
Permit Type:
None
Building Type:
Single family/duplex
Trani dadu new sanitary to existing onsite sanitary side sewer. drainage not included. drainage review not required. associated building permit for new dadu under 6999833-cn
Valuation:
$175,000
Permit #:
7042341-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Lagos dadu new sanitary to existing onsite sanitary only side sewer. drainage not included. drainage review not required. associated building permit 7003691-cn for new dadu
Valuation:
$175,000
Permit #:
7042347-SS
Status:
issued
Fee:
$750
Permit Type:
New
Building Type:
Single family/duplex
Boothby dadu connect dadu's plumbing outlet to the existing sanitary side sewer. no drainage work. no drainage review was done for this project. no work in row
Valuation:
N/A
Permit #:
7053734-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Delafield residence construct addition and alteration to existing single family residence per plan
Valuation:
$50,000
Permit #:
6783804-CN
Status:
issued
Fee:
$6,066
Permit Type:
Add/alt
Building Type:
Single family/duplex
Construct 1-story1, 638 sq ft detached garage
Valuation:
$70,221
Permit #:
967719
Status:
issued
Fee:
N/A
Permit Type:
N
Building Type:
Garage
New backyard cottage - 393gsf. includes clearing & grading. does not include mechanical electrical or plumbing. guest cottage agreement recording number: 20250408000222
Valuation:
N/A
Permit #:
24 129550 BR
Status:
issued
Fee:
$3,950
Permit Type:
N/A
Building Type:
N/A
Interior remodel of single family residence
Valuation:
N/A
Permit #:
SFR19-0951
Status:
final
Fee:
$4,598
Permit Type:
Remodel or repair
Building Type:
N/A
E17-16379 - to cwa - enclose covered patio area
Valuation:
N/A
Permit #:
BSF2017-16230
Status:
final
Fee:
$1,907
Permit Type:
N/A
Building Type:
N/A
Previous owner did electrical work without a permit. would like to have the work signed off and repair or fix anything that's required. 6/12/18 hh; addition miller's electric as contractor. 3/25/19 sk renewal for inspection per pf
Valuation:
N/A
Permit #:
6591902-EL
Status:
complete
Fee:
$585
Permit Type:
Remodel or repair
Building Type:
Single family/duplex
2nd story addition to expand existing dormer addition a bathroom addition a dormer to existing upper bedroom
Valuation:
N/A
Permit #:
BLD-17-1691
Status:
complete
Fee:
$1,757
Permit Type:
N/A
Building Type:
N/A
2nd story addition to expand existing dormer addition a bathroom addition a dormer to existing upper bedroom
Valuation:
N/A
Permit #:
BLD-17-1691
Status:
Pending
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
House remodel 20 114884 bt. does not include plumbing mechanical or electrical
Valuation:
N/A
Permit #:
21 102159 BU
Status:
final
Fee:
$1,065
Permit Type:
N/A
Building Type:
N/A
Scarr side sewer permit storm drains will be directed by side sewer inspector code authority. sanitary to existing shared sanitary with existing single family residence to 39th ave ne. related construction permit 709148-cn for new dadu. the main located in 39th ave ne is sanitary only
Valuation:
$195,604
Permit #:
7105512-SS
Status:
issued
Fee:
$750
Permit Type:
New
Building Type:
Single family/duplex
Haas Development & Construction Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Haas Development & Construction License info
Verified License
| License # | HAASDDC842QA |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Corporation |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Haas Development & Construction at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HAASDDC842QA |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Haas Development & Construction 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 # | HAASDDC845OO |
| 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.
Check this license's status for Haas Development & Construction at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Insured
| Insurer | Developers Surety & Indem Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | American Contractors Indem Co |
| Bond Value | $12,000 |
21
Permits
- Building permit records show that Haas Development & Construction has worked on 21 permitted projects.
Haas Development & Construction Employees
DH
Delafield, David Hass
President