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Property profile & analytics
OFF-MARKET
Estimated value
$6,635,000
Commercial real estate
523 4th St San Rafael, CA 94901-3310
Entity Owned
Absentee Owner
~
Est. High Equity
Property ID
US09-3290903
Property profile
Verified
Property type
Commercial real estate
Use group
COMMERCIAL (GENERAL)
Year built
1963
Total area
12,875 SF
Lot
0.31 ac (13,366 SF)
APN
014-123-28
UPID
US09-3290903
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
-
Parton & Sell, P.C. Law Firm
-
Andre Fleury Swiss Watch Co (Bike/Boat/Book/etc) Store
-
Tattersall David N Real Estate Agency
-
life in marin blog, jaime pera, real estate marin county Consultant
-
Sun Valley Chiropractic Alternative Medicine Practice
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$8.48M
CAP Approach
CAP
$4.01M
Comparable Approach
Comparable
$4.82M
Blend (final)
Blend
$6.64M
Owner & transaction history
San Rafael Apartments LLC
San Rafael Apartments LLC
since 2025
Last sale
$7.0M
7 recorded transactions
Zoning & alternative use
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 San Rafael submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs San Rafael 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
Method
Estimation
Statistic approach
$8,510,000
ML approach
$8,480,000
CAP Approach
CAP Return
Estimation
6%
$4,345,000
6.5%
$4,010,000
7%
$3,725,000
Blend value · Realmo final
$6.64M
Range $5.97M – $7.30M · ±10% · vs last sale $7.00M (Jul 1 2025)
Last sale anchor
$7.00M
Jul 1 2025
Realmo estimate · informational only.
These numbers are calculated by our models from public records and may not reflect actual market value.
Not an appraisal.
Verify with a licensed appraiser before transacting. Realmo accepts no liability for divergence from real-world outcomes.
View the full estimation — every method, every assumption
Confidence drivers & risk notes · Custom comparable set · Free for first 3 / day
Full estimation methodology
Every method · every assumption · confidence drivers
Price per SF
Sale + rent benchmarks
Subject property
$515 / SF
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 2024Property tax & assessments
Tax year 2024
Tax billed
$50,844
Tax year 2024
Assessed value
$3,714,579
Assessed 2024
Previous assessed
$3,714,579
+0.0% YoY
Effective rate
1.37%
On assessed value
Assessed land
$1,390,598
Assessed improvement
$2,323,981
Applied tax rate
8.0000
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
Commercial real estate
Use group
COMMERCIAL (GENERAL)
Status
Off-Market
Year built
1963
Heating
NONE
Total area
12,875 SF
Lot
0.31 ac (13,366 SF)
APN
014-123-28
UPID
US09-3290903
Jurisdiction
MARIN
Metro division
SAN FRANCISCO-SAN MATEO-REDWOOD CITY, CA METROPOLITAN DIVISION
Zoning & alternative use
Zoning · permitted uses
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Building & site characteristics
From public records
Year built
1963
Heating
NONE
Lot
0.31 ac
Current owner
From public records · entity-resolved
San Rafael Apartments LLC
Entity
Mailing address
930 IRWIN ST STE #210, SAN RAFAEL, CA 94901-3388
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2025
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
7 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Nov 18, 2025
—
San Rafael Apartments LLC
San Rafael Apartments LLC
Deed
related
—
Oct 1, 2025
$7,000,000
San Rafael Apartments LLC
Seagull Prime Real Estate Fund LLC
Grant Deed
$75,393,000 · City National Bank
Apr 1, 2022
—
Seagul Rime Real Estate Fund LLC
Professional Investors 39 LLC
Intrafamily Transfer
related
$3,840,000 · First Republic Bank
Sep 5, 2018
$7,750,000
Professianal Investors 39 LLC
Associated Main Street Partners L P
Grant Deed
$4,100,000 · Jpmorgan Chase Bank NA
Sep 5, 2018
—
Shahram Abbassi
Ducey,christine L
Quit Claim Deed
—
Dec 18, 2008
—
Shahram Abbassi
Ducey,christine L
Quit Claim Deed
related
$3,185,000 · Union Bank Of California
Apr 2, 1998
—
Associated Main St. Partners LP
Walters Trust
Grant Deed
$2,250,000 · Union Bank Of California
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.
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