Rare Bothell development opportunity near Mill Creek, featuring plans for three spacious residences on one parcel! This thoughtfully designed project includes a side-by-side townhome-style duplex plus a detached accessory dwelling unit (DADU), creating exceptional flexibility for investors and builders. Each duplex unit (2,234 and 2,166 sq. ft.) is designed with the scale and function of a single-family home, offering 3 bedrooms, 2.5 baths, an open kitchen with pantry, generous living and dining areas, a large loft family room, a primary suite, dedicated laundry, and an attached garage. The two-story 1,150 sq. ft. DADU adds 3 bedrooms, 2.5 baths, a full kitchen, living and dining areas, upstairs laundry, and its own 286 sq. ft. attached garage. Together, the plans offer 9 bedrooms and garage parking for every home. Architectural and structural plans are professionally developed, with substantial site engineering complete. Plans and supporting documents are available for review. Construction, permits, and feasibility are subject to buyer verification. The renovated home next door, with two full living spaces and 6 bedrooms, is also available.
This is a new listing, so no sales records exist yet. As listing and public records start to fill up, we'll list the details here.
As listing and public records start to fill up, we'll list the details here.
Public record
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Style
Vacant Land
County
Snohomish County
APN
00929600000502
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Last updated by owner on Nov 4, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
7 days above 85° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
6/10 Air Factor
9 unhealthy days expected this year, 9 days in 30 years
Provided by First Street
Historical weather
Bothell, WA • 98012
Average low and high temperatures (°F)
46
35
47
36
52
40
60
42
66
47
72
52
77
55
77
58
71
53
58
44
50
41
47
39
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Sun exposure
89/ 100
Very good sunlight
Sunscore
This home ranks in the top 21% for direct sun exposure in Bothell. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
10.5 hrs
5.3 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 321 170th Pl SE
$795,559
$4,441 under list price of $800K
Nearby comparable homes
The Redfin Estimate uses 5 recent nearby sales, priced between $670K to $815K.