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Property profile & analytics
FOR LEASE
Medical Office Space
3670 Stone Way N Seattle, WA 98103
Entity Owned
~
Est. High Equity
Property ID
US90-0535598
For Lease
1 / 3
Contact for pricing
3670 Stone Way N, Seattle, WA 98103
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Property profile
Verified
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Year built
1940
Construction
MASONRY/CONCRETE MASONRY UNITS (CMUS)
Total area
16,002 SF
Lot
0.51 ac (22,100 SF)
Zoning code
NC2-75 (M1)
APN
803370-0190
UPID
US90-0535598
Cap rate & NOI
Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors
Implied cap rate, NOI & suggested price
Cap vs submarket · NOI estimate · 3 price anchors
Current use
Occupant on record · Public records
-
Lela Altman, ND Alternative Medicine Practice
-
Amy D. Turnbull, ND Alternative Medicine Practice
-
Bastyr Natural Medicine Shop (Bike/Boat/Book/etc) Store Specialty Food Shop
-
Phoebe Yin ND PLLC Alternative Medicine Practice
-
Hazel A. Philp, ND Alternative Medicine Practice
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
by Request
Owner & transaction history
3670 Stone LLC
3670 Stone LLC
since 2026
Last sale
$10.0M
7 recorded transactions
Zoning & alternative use
NC2-75 (M1) · Seattle, WA
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Cap rate
Implied · in-place · derived from last sale + estimated NOI
Implied Cap rate
#1
Implied · in-place · NOI ÷ last sale
In-place · derived from last sale + estimated NOI
Cap rate, NOI & submarket benchmark
Implied cap rate vs Seattle submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Seattle submarket · NOI estimate · typical band, median & reading
Refine your cap rate
8-question underwriting flow
1.
Property current status — Going-In vs Stabilized
2.
Price for denominator — asking / offer / market
3.
Leasing status & lease structure (NNN / Gross)
4.
Tenant risk profile & vacancy assumption
5.
Upload T12 / rent roll / OM (optional)
Refine in 60 seconds, get exact suggested price
T12 upload · Submarket benchmarks · Sensitivity grid
Suggested price · 3 cap rate anchors
Income approach @ 5% / 7% / 9% — aggressive / typical / conservative
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · Implied $/SF per anchor · Sensitivity grid
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · implied $/SF · sensitivity
Value
AI, CAP & Alternative Use estimations · Realmo proprietary blendValue Estimations
Based on Realmo’s proprietary methodology
AI Approach
CAP Approach
Comparable Approach
Alternative Use
Get a detailed, property-specific estimation — fast and free
Price per SF
Sale + rent benchmarks
Subject property
—
Submarket sale & rent benchmarks
Median sale $/SF · Asking & closed rent · Submarket vacancy
Submarket sale & rent benchmarks
Median sale $/SF · asking & closed rent · submarket vacancy
Property tax & assessments
Tax year 2022Property tax & assessments
Tax year 2022
Tax billed
$4,172
Tax year 2022
Assessed value
$14,356,500
Assessed 2022
Previous assessed
$14,356,500
+0.0% YoY
Effective rate
0.03%
On assessed value
Assessed land
$8,840,000
Assessed improvement
$5,516,500
Land market value
$8,840,000
Improvement market value
$5,516,500
Total market value
$14,356,500
Applied tax rate
10.0000
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
Similar Nearby for Sale
Similar Nearby for Lease
Recent comparable sales
Sale price & price/SF · Sale date & distance · Adjustments & confidence
Recent comparable sales
Sale price & $/SF · sale date & distance · adjustments
Property description
Physical attributes from public recordsBuilding & lot
Public records
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Status
For Lease
Year built
1940
Construction
MASONRY/CONCRETE MASONRY UNITS (CMUS)
Heating
CENTRAL
Cooling
AC.PACKAGE
Buildings
2
Stories
2
Total area
16,002 SF
Lot
0.51 ac (22,100 SF)
Zoning code
NC2-75 (M1)
APN
803370-0190
UPID
US90-0535598
Jurisdiction
KING
Metro division
SEATTLE-BELLEVUE-EVERETT, WA METROPOLITAN DIVISION
Zoning & alternative use
NC2-75 (M1) · Seattle, WA
Zoning NC2-75 (M1) · permitted uses
NC2-75 (M1) · Seattle, WA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Seattle. Always verify with local authorities before improvements.
Building & site characteristics
From public records
Year built
1940
Construction
MASONRY/CONCRETE MASONRY UNITS (CMUS)
Heating
CENTRAL
Cooling
Yes
Stories
2
Buildings
2
Lot
0.51 ac
Current owner
From public records · entity-resolved
3670 Stone LLC
Entity
Mailing address
636 120TH AVE NE STE A200, BELLEVUE, WA 98005-3028
Ownership since
2026
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
12 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Feb 4, 2026
$10,000,000
3670 Stone LLC
Swl LLC
Warranty Deed
$89,000,000 · Same Investment Co LLC
Jul 5, 2011
—
Swl LLC
Same Investment Co LLC
Warranty Deed
—
May 11, 2011
—
Same Investment Co LLC
Equity Funding LLC
Deed In Lieu Of Foreclosure
related
—
May 7, 2010
$9,500,000
Equity Funding LLC
Regional Te Svcs Corp
Deed Of Trust
related
$9,510,000 · Same Investment Co LLC
Sep 26, 2006
—
Michael R Mastro
—
Deed Of Trust
related
$7,000,000 · Washington Trust Bank
Aug 22, 2005
—
Michael R Mastro
—
Trustees Deed
related
$7,425,000 · Central Pacific Bank
May 4, 2005
$7,000,000
Michael R Mastro
United Cerebral Palsy Assocs
Warranty Deed
—
Mar 2, 2000
$3,000,000
United Cerebral Palsy Assn
Heglund,albert & Helene P
Grant Deed
—
—
—
Provail
—
Deed Of Trust
related
$7,782,274 · Key Bank NA
—
—
Michael R Mastro
—
Deed Of Trust
related
$9,600,000 · China Trust Bank USA
—
—
United Cerebral Palsy Assn
—
Deed Of Trust
related
$2,400,000 · Key Bank NA
—
—
Michael R Mastro
—
Deed Of Trust
related
$10,000,000 · Terry Durst
Coming soon
Costs & Benchmarks
Operating expenses, capex projections, utility benchmarks, and submarket comparables — all in one view.
Coming soon
Risks
Flood, climate, environmental, title, and tenant-concentration risk — surfaced with mitigations and source citations.
Try Rey
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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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