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Property profile & analytics
OFF-MARKET
Estimated value
$1,980,000
Office buildings
20 Oak Ct Danville, CA 94526-4006
Entity Owned
28-yr Hold
~
Est. High Equity
Property ID
US09-3329002
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1991
Total area
8,921 SF
Lot
0.55 ac (23,871 SF)
Zoning code
O1
APN
216-090-003-7
UPID
US09-3329002
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
-
James E Roberts-Obayashi Corporation Construction Company General Contractor
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$2.65M
Comparable Approach
Comparable
$1.22M
Blend (final)
Blend
$1.98M
Owner & transaction history
James E Roberts Obayashi Corp · 28 yrs held
James E Roberts Obayashi Corp
since 1998
7 recorded transactions
Zoning & alternative use
O1 · Danville, CA
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Medical building
$3.2M
+5.7%
Commercial (general)
$3.1M
+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 Danville submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Danville 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%
$2,870,000
6.5%
$2,645,000
7%
$2,460,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$3,065,000
Current use
MEDICAL BUILDING
$3,240,000
Change: +6% · Conversion: Easy
COMMERCIAL (GENERAL)
$3,105,000
Change: +1% · Conversion: Easy
Blend value · Realmo final
$1.98M
Range $1.78M – $2.18M · ±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
$222 / 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
$45,747
Tax year 2024
Assessed value
$3,881,065
Assessed 2024
Previous assessed
$3,881,065
+0.0% YoY
Effective rate
1.18%
On assessed value
Assessed land
$1,198,517
Assessed improvement
$2,682,548
Applied tax rate
16.0000
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
1991
Heating
NONE
Stories
1
Units
1
Rooms
1
Bathrooms
2
Total area
8,921 SF
Lot
0.55 ac (23,871 SF)
Zoning code
O1
APN
216-090-003-7
UPID
US09-3329002
Jurisdiction
CONTRA COSTA
Metro division
OAKLAND-FREMONT-HAYWARD, CA METROPOLITAN DIVISION
Zoning & alternative use
O1 · Danville, CA
Zoning O1 · permitted uses
O1 · Danville, CA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Danville. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$3.1M
MEDICAL BUILDING
Est. value
$3.2M
COMMERCIAL (GENERAL)
Est. value
$3.1M
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
1991
Heating
NONE
Stories
1
Units
1
Rooms
1
Bathrooms
2
Lot
0.55 ac
Current owner
From public records · entity-resolved
James E Roberts Obayashi Corp
Entity
Mailing address
20 OAK CT, DANVILLE, CA 94526-4006
Mailing matches property
Yes
Owner-occupied
Yes
Ownership since
1998
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
14 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Mar 15, 2023
—
James E Roberts Obayashi Corporatio
—
Deed
related
$2,000,000 · Comerica Bank
Nov 3, 2020
—
James E Roberts-obayashi Corp
—
Deed
related
$3,000,000 · Comerica Bk
Nov 6, 2018
—
James E Roberts Obayshi Corp
—
Deed
related
$3,000,000 · Comerica Bank California
Apr 30, 1998
—
James E Roberts Obayashi Corp
James E Roberts Ohbayashi Corp
Quit Claim Deed
related
$2,000,000 · Imperial Bank
Nov 29, 1990
$678,000
James E Roberts
Delayed Exchange
Grant Deed
—
Oct 20, 1989
$675,000
Delayed Exchange
Oak Plaza Associ
Grant Deed
$678,000 · James Roberts Oh
Jul 15, 1988
$539,000
Oak Plaza Associ
Spilk
Grant Deed
$1,350,000 · Westamerica Bank
—
—
James E Roberts-obayashi
—
Loan Modification
related
$3,000,000 · Comerica Bank
—
—
James E Roberts-obayashi Corp
—
Deed Of Trust
related
$2,000,000 · Comerica Bank
—
—
James E Roberts-obayashi
—
Loan Modification
related
$3,000,000 · Comerica Bk
—
—
James E Roberts-obayashi Corp
—
Deed Of Trust
related
$3,000,000 · Comerica Bk
—
—
James E Roberts-obayashi Corp
—
Deed Of Trust
related
$1,000,000 · Comerica Bank
—
—
James E Roberts-ohbayashi Corp
—
Deed Of Trust
related
$3,000,000 · Obayashi Corp
—
—
James E Roberts-obayashi Corp
—
Deed Of Trust
related
$2,000,000 · Comerica 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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