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Property profile & analytics
OFF-MARKET
Estimated value
$515,000
Office buildings
1457 Sos Dr Walnut Creek, CA 94597-3124
Individually Owned
13-yr Hold
~
Est. High Equity
Property ID
US09-3140194
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1950
Total area
1,854 SF
Lot
0.11 ac (5,000 SF)
APN
171-202-002-1
UPID
US09-3140194
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
-
Security Engineers, Inc. Building Supply Security Service
-
SOS Spa Walnut Creek Alternative Medicine Practice Spa & Massage Center
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$385k
CAP Approach
CAP
$550k
Comparable Approach
Comparable
$609k
Blend (final)
Blend
$515k
Owner & transaction history
Soheyla Seyfhashemi · 13 yrs held
Soheyla Seyfhashemi
since 2013
3 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 Walnut Creek submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Walnut Creek 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
$385,000
CAP Approach
CAP Return
Estimation
6%
$595,000
6.5%
$550,000
7%
$510,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$805,000
Current use
MEDICAL BUILDING
$675,000
Change: -16% · Conversion: Easy
COMMERCIAL (GENERAL)
$645,000
Change: -20% · Conversion: Easy
Blend value · Realmo final
$515k
Range $464k – $567k · ±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
$278 / 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
$6,439
Tax year 2024
Assessed value
$482,902
Assessed 2024
Previous assessed
$482,902
+0.0% YoY
Effective rate
1.33%
On assessed value
Assessed land
$301,816
Assessed improvement
$181,086
Applied tax rate
9.0000
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
1950
Heating
NONE
Stories
1
Units
1
Rooms
1
Total area
1,854 SF
Lot
0.11 ac (5,000 SF)
APN
171-202-002-1
UPID
US09-3140194
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
$805,000
MEDICAL BUILDING
Est. value
$675,000
COMMERCIAL (GENERAL)
Est. value
$645,000
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
1950
Heating
NONE
Stories
1
Units
1
Rooms
1
Lot
0.11 ac
Current owner
From public records · entity-resolved
Soheyla Seyfhashemi
Individual
Mailing address
PO BOX 1166, ALAMO, CA 94507-7166
Ownership since
2013
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
3 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Feb 26, 2013
$400,000
Soheyla Seyfhashemi
Schirato Marc J
Grant Deed
$260,000 · Northern California Mortgage
Apr 14, 2006
—
Marc J Schirato
Schirato,george J
Affidavit Of Death
related
—
Apr 12, 1973
—
—
—
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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