Back to Search
Property profile & analytics
OFF-MARKET
Estimated value
$1,355,000
Apartment buildings
1847 Knox St Castro Valley, CA 94546
Individually Owned
5-yr Hold
~
Est. High Equity
Property ID
US09-8476313
Property profile
Verified
Property type
Apartment buildings
Use group
APARTMENT HOUSE (5+ UNITS)
Year built
1965
Construction
WOOD
Total area
5,440 SF
Lot
0.22 ac (9,750 SF)
APN
415-220-40
UPID
US09-8476313
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
$1.32M
CAP Approach
CAP
$1.63M
Comparable Approach
Comparable
$1.79M
Blend (final)
Blend
$1.36M
Owner & transaction history
Roberto Ivan Alvaro · 5 yrs held
Roberto Ivan Alvaro
since 2020
Last sale
$1.4M
6 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Auto repair, garage
$2.0M
+36.2%
Office building
$1.8M
+19.5%
Retail stores
$1.6M
+6.8%
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 Castro Valley submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Castro Valley 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
$1,325,000
ML approach
$1,315,000
CAP Approach
CAP Return
Estimation
6%
$1,760,000
6.5%
$1,625,000
7%
$1,505,000
Alternative Use
Use
Estimation
APARTMENT HOUSE (5+ UNITS)
$1,475,000
Current use
AUTO REPAIR, GARAGE
$2,010,000
Change: +36% · Conversion: Difficult
OFFICE BUILDING
$1,765,000
Change: +19% · Conversion: Moderate
RETAIL STORES
$1,575,000
Change: +7% · Conversion: Difficult
COMMERCIAL (GENERAL)
$1,495,000
Change: +1% · Conversion: Moderate
INDUSTRIAL (GENERAL)
$1,480,000
Change: +0% · Conversion: Difficult
Blend value · Realmo final
$1.36M
Range $1.22M – $1.49M · ±10% · vs last sale $1.39M (Sep 15 2020)
Last sale anchor
$1.39M
Sep 15 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
$249 / 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 2023Property tax & assessments
Tax year 2023
Tax billed
$22,797
Tax year 2023
Assessed value
$1,472,945
Assessed 2024
Previous assessed
$1,444,075
+2.0% YoY
Effective rate
1.55%
On assessed value
Assessed land
$451,010
Assessed improvement
$1,021,935
Applied tax rate
59.0000
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
Apartment buildings
Use group
APARTMENT HOUSE (5+ UNITS)
Status
Off-Market
Year built
1965
Construction
WOOD
Heating
NONE
Buildings
1
Stories
2
Units
5
Rooms
20
Bathrooms
7
Total area
5,440 SF
Lot
0.22 ac (9,750 SF)
APN
415-220-40
UPID
US09-8476313
Jurisdiction
ALAMEDA
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
APARTMENT HOUSE (5+ UNITS) Current
Est. value
$1.5M
AUTO REPAIR, GARAGE
Est. value
$2.0M
OFFICE BUILDING
Est. value
$1.8M
RETAIL STORES
Est. value
$1.6M
COMMERCIAL (GENERAL)
Est. value
$1.5M
INDUSTRIAL (GENERAL)
Est. value
$1.5M
APARTMENT HOUSE (5+ UNITS) Current
AUTO REPAIR, GARAGE
OFFICE BUILDING
RETAIL STORES
COMMERCIAL (GENERAL)
INDUSTRIAL (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
1965
Construction
WOOD
Heating
NONE
Stories
2
Buildings
1
Units
5
Rooms
20
Bathrooms
7
Lot
0.22 ac
Current owner
From public records · entity-resolved
Roberto Ivan Alvaro
Individual
Mailing address
1765 WILLOW RD, HILLSBOROUGH, CA 94010-6354
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
6 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Sep 20, 2022
—
Elizabeth Alvaro
—
Deed
related
$705,000 · Jpmorgan Chase Bank NA
Sep 15, 2020
$1,390,000
Roberto Ivan Alvaro
Thomas D Clark
Grant Deed
$900,000 · Wachter Investments INC
Jul 18, 2017
—
Joan C Sinlcair
Sinclair David C & J C Trust
Quit Claim Deed
related
—
Feb 5, 2014
—
David C Sinclair
Sinclair,david C & Joan C
Quit Claim Deed
related
—
Oct 25, 1983
$36,000
David C Sinclair
Runswick,richard A
Grant Deed
—
Jan 1, 1982
—
—
—
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.
Try Rey
Ask anything about this address in plain English.
“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
You own 1847 Knox St?
List it free. Reach 20,000 daily buyers.
We’ve already pulled the facts. Confirm photos + price and you’re live in 2 minutes.
List this address →
Full reports are paid
Unlock the full Property Analytics report
Start free for 7 days — no card required. Full owner contacts, all 4 valuations with methodology, refine flow, comparable adjustments, foot-traffic deep dive, export to PDF / CSV.
