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Property profile & analytics
OFF-MARKET
Estimated value
$860,000
Medical Office Space
800 C St Antioch, CA 94509-1719
Trust Owned
6-yr Hold
Absentee Owner
~
Est. High Equity
Property ID
US10-3247700
Property profile
Verified
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Year built
1956
Construction
WOOD FRAME
Total area
3,557 SF
Lot
0.32 ac (14,000 SF)
APN
066-185-010-7
UPID
US10-3247700
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
-
Antioch Dental Group Dental Office
-
Dr. F. Paul Partovi, DDS Dental Office
-
Antioch Dental Group: Coulston Phillip L DDS Dental Office
-
Dr. David A. Brown, DDS Dental Office
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$900k
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$860k
Owner & transaction history
Partovi,f & F 2003 L Trust · 6 yrs held
Partovi,f & F 2003 L Trust
since 2019
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 Antioch submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Antioch 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
by Request
ML approach
by Request
CAP Approach
CAP Return
Estimation
6%
$975,000
6.5%
$900,000
7%
$835,000
Alternative Use
Use
Estimation
MEDICAL BUILDING
$1,290,000
Current use
COMMERCIAL (GENERAL)
$1,240,000
Change: -4% · Conversion: Easy
OFFICE BUILDING
$1,225,000
Change: -5% · Conversion: Easy
Blend value · Realmo final
$860k
Range $774k – $946k · ±10%
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
$242 / 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
$15,495
Tax year 2024
Assessed value
$1,175,582
Assessed 2024
Previous assessed
$1,175,582
+0.0% YoY
Effective rate
1.32%
On assessed value
Assessed land
$386,165
Assessed improvement
$789,417
Applied tax rate
1.0000
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
Off-Market
Year built
1956
Construction
WOOD FRAME
Heating
FORCED AIR
Cooling
CENTRAL
Stories
1
Units
1
Rooms
1
Total area
3,557 SF
Lot
0.32 ac (14,000 SF)
APN
066-185-010-7
UPID
US10-3247700
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
MEDICAL BUILDING Current
Est. value
$1.3M
COMMERCIAL (GENERAL)
Est. value
$1.2M
OFFICE BUILDING
Est. value
$1.2M
MEDICAL BUILDING Current
COMMERCIAL (GENERAL)
OFFICE BUILDING
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
1956
Construction
WOOD FRAME
Heating
FORCED AIR
Cooling
Yes
Stories
1
Units
1
Rooms
1
Lot
0.32 ac
Current owner
From public records · entity-resolved
Partovi,f & F 2003 L Trust
Trust
Mailing address
811 MDW CRK CT, WALNUT CREEK, CA 94596-5346
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2019
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
Aug 2, 2019
—
Partovi,f & F 2003 L Trust
Partovi,farhad
Quit Claim Deed
related
—
Jul 27, 2018
—
Farhad Partovi
—
Deed
related
$500,000 · First Citizens Bank & Trust Company
Jan 31, 2007
$895,000
Farhad Partovi
Antioch Dental Group Building
Grant Deed
$645,000 · Antioch Dental Group Building
Jan 31, 2007
—
Farhad Partovi
Partovi,firovzeh
Quit Claim Deed
related
—
Oct 26, 1994
—
Antioch Dental Group Building
Swenson Trust
Quit Claim Deed
related
—
May 19, 1993
—
Swenson,trust
Antioch Dental G
Quit Claim Deed
related
—
—
—
Farhad Partovi
—
Deed Of Trust
related
$698,000 · Bank Of America
—
—
Farhad Partovi
—
Deed Of Trust
related
$750,000 · Sterling Savings Bank
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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