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Property profile & analytics
OFF-MARKET
Estimated value
$545,000
Office buildings
815 Estudillo St Martinez, CA 94553-1617
Individually Owned
3-yr Hold
Absentee Owner
Free & Clear
Property ID
US10-2426297
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1925
Total area
2,466 SF
Lot
0.29 ac (12,684 SF)
APN
373-202-005-6
UPID
US10-2426297
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
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$580k
CAP Approach
CAP
$730k
Comparable Approach
Comparable
$449k
Blend (final)
Blend
$545k
Owner & transaction history
Sean Dexter · 3 yrs held
Sean Dexter
since 2022
Last sale
$525,000
7 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Medical building
$895,000
+5.7%
Commercial (general)
$860,000
+1.3%
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 Martinez submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Martinez 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
$655,000
ML approach
$580,000
CAP Approach
CAP Return
Estimation
6%
$795,000
6.5%
$730,000
7%
$680,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$850,000
Current use
MEDICAL BUILDING
$895,000
Change: +6% · Conversion: Easy
COMMERCIAL (GENERAL)
$860,000
Change: +1% · Conversion: Easy
Blend value · Realmo final
$545k
Range $491k – $600k · ±10% · vs last sale $525k (Nov 4 2022)
Last sale anchor
$525k
Nov 4 2022
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
$221 / 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
$8,514
Tax year 2024
Assessed value
$618,594
Assessed 2024
Previous assessed
$618,594
+0.0% YoY
Effective rate
1.38%
On assessed value
Assessed land
$235,654
Assessed improvement
$382,940
Applied tax rate
5.0000
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
Office buildings
Use group
OFFICE BUILDING
Status
Off-Market
Year built
1925
Heating
NONE
Stories
1
Units
1
Rooms
1
Total area
2,466 SF
Lot
0.29 ac (12,684 SF)
APN
373-202-005-6
UPID
US10-2426297
Jurisdiction
CONTRA COSTA
Metro division
OAKLAND-FREMONT-HAYWARD, 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
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$850,000
MEDICAL BUILDING
Est. value
$895,000
COMMERCIAL (GENERAL)
Est. value
$860,000
OFFICE BUILDING Current
MEDICAL BUILDING
COMMERCIAL (GENERAL)
Alternative use deep dive — conversion cost, permits, timeline
Conversion cost estimate · Permit path & risks · Stabilized NOI per option
Alternative use deep dive
Conversion cost · permit path · stabilized NOI per option
Building & site characteristics
From public records
Year built
1925
Heating
NONE
Stories
1
Units
1
Rooms
1
Lot
0.29 ac
Current owner
From public records · entity-resolved
Sean Dexter
Individual
Free & Clear · 3 yrs held
Mailing address
808 ARLINGTON WAY, MARTINEZ, CA 94553-1575
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2022
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
8 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Nov 4, 2022
—
Sean Dexter
Sean Dexter
Intrafamily Transfer
related
—
Sep 8, 2021
—
Sean D Dexter
—
Deed
related
$365,000 · Us Bank Trust Co NA
Sep 4, 2015
—
Sean Dexter
Daxter Wendy K
Affidavit Of Death
related
—
Jul 18, 2014
$525,000
Sean D Dexter
Wendell Rasmussen
Grant Deed
$450,000 · New Resource Bank
May 9, 2005
—
Rasmussen Trust
Rasmussen,wendell D & Joy A
Quit Claim Deed
related
—
Mar 5, 1982
—
Mcdonald,norman|rasmussen,wendell D Tr Etal
—
Grant Deed
related
—
Apr 16, 1973
—
—
—
Grant Deed
related
—
Nov 3, 1961
—
Owner Name Unavailable
—
Grant Deed
related
—
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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