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Property profile & analytics
OFF-MARKET
Estimated value
$585,000
Office buildings
700 1st St Antioch, CA 94509-1109
Individually Owned
22-yr Hold
Free & Clear
Property ID
US09-0074220
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1963
Construction
CONCRETE
Total area
4,168 SF
Lot
0.04 ac (1,800 SF)
APN
066-081-002-9
UPID
US09-0074220
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
-
Commercial Business Insurance Insurance Agency
-
Contra Costa Youth Service Bureau Charitable Organization Social Service Agency
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$739k
Blend (final)
Blend
$585k
Owner & transaction history
Ggb Ptshp · 22 yrs held
Ggb Ptshp
since 2003
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%
by Request
6.5%
by Request
7%
by Request
Blend value · Realmo final
$585k
Range $527k – $644k · ±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
$140 / 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
$5,141
Tax year 2024
Assessed value
$299,671
Assessed 2024
Previous assessed
$299,671
+0.0% YoY
Effective rate
1.72%
On assessed value
Assessed land
$30,098
Assessed improvement
$269,573
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
Office buildings
Use group
OFFICE BUILDING
Status
Off-Market
Year built
1963
Construction
CONCRETE
Heating
NONE
Stories
1
Units
3
Rooms
3
Total area
4,168 SF
Lot
0.04 ac (1,800 SF)
APN
066-081-002-9
UPID
US09-0074220
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
Building & site characteristics
From public records
Year built
1963
Construction
CONCRETE
Heating
NONE
Stories
1
Units
3
Rooms
3
Lot
0.04 ac
Current owner
From public records · entity-resolved
Ggb Ptshp
Individual
Free & Clear · 22 yrs held
Mailing address
PO BOX 129, ORINDA, CA 94563-0129
Ownership since
2003
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 14, 2003
$215,000
Ggb Ptshp
Antioch Building Ptshp
Grant Deed
—
Nov 14, 2003
—
Kats LLC
Ggb Ptshp
Grant Deed
related
—
Aug 25, 1998
$150,000
Antioch Building Partnership
Gng Management
Grant Deed
$150,000 · South Valley Bank
Dec 12, 1997
—
Lisa Burns
Burns,david
Quit Claim Deed
related
—
Dec 12, 1997
$200,000
Gng Management
Zimmerman,wayne E
Trustees Deed
—
—
—
Wayne Zimmerman
—
Deed Of Trust
related
$155,000 · East County Bank
—
—
Wayne Zimmerman
—
Deed Of Trust
related
$60,000 · Adobe Savings & Loan
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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