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Property profile & analytics
OFF-MARKET
Estimated value
$3,130,000
Investment properties
430 Napa St Sonoma, CA 95476-6500
Entity Owned
Free & Clear
Property ID
US09-1673763
Property profile
Verified
Property type
Investment properties
Use group
OFFICE/RESIDENTIAL (MIXED USE)
Year built
1992
Construction
WOOD
Total area
6,946 SF
Lot
0.3 ac (13,150 SF)
APN
018-193-048-000
UPID
US09-1673763
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
$3.18M
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$1.89M
Blend (final)
Blend
$3.13M
Owner & transaction history
430 W Napa Holdings LLC
430 W Napa Holdings LLC
since 2026
Last sale
$3.0M
7 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Apartment house (5+ units)
$4.8M
+12.3%
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 Sonoma submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Sonoma 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
$3,345,000
ML approach
$3,175,000
CAP Approach
CAP Return
Estimation
6%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
COMMERCIAL (GENERAL)
$4,280,000
Current use
APARTMENT HOUSE (5+ UNITS)
$4,805,000
Change: +12% · Conversion: Moderate
Blend value · Realmo final
$3.13M
Range $2.82M – $3.44M · ±10% · vs last sale $3.00M (Jun 20 2023)
Last sale anchor
$3.00M
Jun 20 2023
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
$451 / 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
$42,097
Tax year 2024
Assessed value
$3,325,200
Assessed 2024
Previous assessed
$3,325,200
+0.0% YoY
Effective rate
1.27%
On assessed value
Assessed land
$1,020,000
Assessed improvement
$2,305,200
Applied tax rate
6.0000
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
Investment properties
Use group
OFFICE/RESIDENTIAL (MIXED USE)
Status
Off-Market
Year built
1992
Construction
WOOD
Heating
NONE
Stories
2
Rooms
26
Bathrooms
7
Total area
6,946 SF
Lot
0.3 ac (13,150 SF)
APN
018-193-048-000
UPID
US09-1673763
Jurisdiction
SONOMA
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
COMMERCIAL (GENERAL) Current
Est. value
$4.3M
APARTMENT HOUSE (5+ UNITS)
Est. value
$4.8M
COMMERCIAL (GENERAL) Current
APARTMENT HOUSE (5+ UNITS)
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
1992
Construction
WOOD
Heating
NONE
Stories
2
Rooms
26
Bathrooms
7
Lot
0.3 ac
Current owner
From public records · entity-resolved
430 W Napa Holdings LLC
Entity
Free & Clear · 0 yrs held
Mailing address
PO BOX 5490, VACAVILLE, CA 95696-5490
Ownership since
2026
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
11 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Apr 10, 2026
$1,475,000
430 W Napa Holdings LLC
Windscape Apartments LLC
Grant Deed
—
Jun 20, 2023
$3,000,000
Windscape Apartments LLC
Lefever Mattson
Grant Deed
—
Nov 10, 2022
—
Mattson Lefever
Tradewinds Apartments LP
Intrafamily Transfer
related
—
Oct 20, 2021
—
Tradewinds Apartments LP
Tradewinds Apartments LP
Intrafamily Transfer
related
—
Mar 1, 2018
$2,257,000
Tradewind Apartments LP
Ks Mattson Partners LP
Grant Deed
—
Jan 31, 2017
$1,950,000
Ks Mattson Partners LP
Peak Napa Street Associates Ll
Grant Deed
—
Jan 31, 2017
—
K S Mattson Partners LP
—
Deed
related
—
Mar 24, 2015
$1,425,000
Peak Napa Street Associates LLC
Francine M Clayton
Grant Deed
$1,140,000 · First Community Bank
Aug 25, 1998
—
Francine M Clayton
Clayton,richard N
Quit Claim Deed
related
—
Nov 24, 1992
$300,000
Clayton Trust
Conforti,victor
Trustees Deed
$550,000 · Bank Of Marin
—
—
K S Mattson Partners LP
—
Loan Modification
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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