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Property profile & analytics
OFF-MARKET
Estimated value
$615,000
Retail space
835 Main St Martinez, CA 94553-1225
Entity Owned
6-yr Hold
Absentee Owner
~
Est. High Equity
Property ID
US09-1819510
Property profile
Verified
Property type
Retail space
Use group
RETAIL STORES (PERSONAL SERVICES)
Year built
1938
Total area
2,960 SF
Lot
0.07 ac (2,997 SF)
APN
373-161-006-3
UPID
US09-1819510
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
$490k
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$751k
Blend (final)
Blend
$615k
Owner & transaction history
William Welch Wines LLC · 6 yrs held
William Welch Wines LLC
since 2020
Last sale
$642,000
7 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Office building
$1.0M
+70.1%
Auto repair, garage
$785,000
+31.2%
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
$560,000
ML approach
$490,000
CAP Approach
CAP Return
Estimation
6%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
RETAIL STORES
$600,000
Current use
OFFICE BUILDING
$1,020,000
Change: +70% · Conversion: Easy
AUTO REPAIR, GARAGE
$785,000
Change: +31% · Conversion: Difficult
Blend value · Realmo final
$615k
Range $554k – $677k · ±10% · vs last sale $642k (May 7 2020)
Last sale anchor
$642k
May 7 2020
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
$208 / 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
$8,880
Tax year 2024
Assessed value
$694,796
Assessed 2024
Previous assessed
$694,796
+0.0% YoY
Effective rate
1.28%
On assessed value
Assessed land
$230,522
Assessed improvement
$464,274
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
Retail space
Use group
RETAIL STORES (PERSONAL SERVICES)
Status
Off-Market
Year built
1938
Heating
NONE
Stories
1
Units
2
Rooms
2
Total area
2,960 SF
Lot
0.07 ac (2,997 SF)
APN
373-161-006-3
UPID
US09-1819510
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
RETAIL STORES Current
Est. value
$600,000
OFFICE BUILDING
Est. value
$1.0M
AUTO REPAIR, GARAGE
Est. value
$785,000
RETAIL STORES Current
OFFICE BUILDING
AUTO REPAIR, GARAGE
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
1938
Heating
NONE
Stories
1
Units
2
Rooms
2
Lot
0.07 ac
Current owner
From public records · entity-resolved
William Welch Wines LLC
Entity
Mailing address
1820 FRANKLIN CYN RD, MARTINEZ, CA 94553-9679
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2020
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
May 7, 2020
—
William Welch Wines LLC
William Welch Wines LLC
Quit Claim Deed
related
$683,000 · Community Bk/the Bay
Apr 14, 2020
—
William Welch Wines LLC
Stephen J Welch
Quit Claim Deed
related
—
Jul 25, 2019
$642,000
Stephen J Welch
Blackstone Property Group LLC
Grant Deed
$350,000 · Don K Callahan
Dec 7, 2018
—
Blackstone Property Group LLC
—
Deed
related
$390,000 · Don K Callahan
Aug 19, 2016
$450,000
Blackstone Property Group LLC
Hall Living Trust
Grant Deed
$380,000 · Private Individual
Jul 7, 2015
—
Matthew M Oleary
Hall John B
Affidavit Of Death
related
—
—
—
Blackstone Property Group LLC
—
Deed Of Trust
related
$390,000 · Don K Callahan
Jan 2, 1969
—
—
—
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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