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Property profile & analytics
FOR LEASE
Office buildings
520 Mendocino Ave Santa Rosa, CA 95404
Entity Owned
1-yr Hold
Absentee Owner
Free & Clear
Property ID
US09-1267569
For Lease
1 / 2
$6,955,000
520 Mendocino Ave, Santa Rosa, CA 95404
View Listing →
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING (MULTI-STORY)
Year built
1983
Construction
TILT-UP CONCRETE
Total area
50,204 SF
Lot
0.42 ac (18,295 SF)
APN
009-024-048-000
UPID
US09-1267569
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
-
Sonoma Mortgage Co Loan Service Bank
-
Willowglen Homes Construction Company General Contractor
-
S R Wilson Inc Employment Agency
-
Otis Elevator Co Construction Company General Contractor
-
Work Wise Law Firm
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$4.28M
Blend (final)
Blend
$6.96M
Owner & transaction history
520 Mendocino Avenue LLC · 1 yrs held
520 Mendocino Avenue LLC
since 2025
7 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 Santa Rosa submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Santa Rosa 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%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
COMMERCIAL (GENERAL)
$11,420,000
Change: -5% · Conversion: Easy
INDUSTRIAL (GENERAL)
$11,230,000
Change: -6% · Conversion: Difficult
Blend value · Realmo final
$6.96M
Range $6.26M – $7.65M · ±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
$139 / 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
$105,392
Tax year 2024
Assessed value
$9,203,039
Assessed 2024
Previous assessed
$9,203,039
+0.0% YoY
Effective rate
1.15%
On assessed value
Assessed land
$1,840,604
Assessed improvement
$7,362,435
Applied tax rate
4.0000
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 (MULTI-STORY)
Status
For Lease
Year built
1983
Construction
TILT-UP CONCRETE
Heating
CENTRAL
Cooling
YES
Stories
3
Total area
50,204 SF
Lot
0.42 ac (18,295 SF)
APN
009-024-048-000
UPID
US09-1267569
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)
Est. value
$11.4M
INDUSTRIAL (GENERAL)
Est. value
$11.2M
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
1983
Construction
TILT-UP CONCRETE
Heating
CENTRAL
Cooling
Yes
Stories
3
Lot
0.42 ac
Current owner
From public records · entity-resolved
520 Mendocino Avenue LLC
Entity
Free & Clear · 1 yrs held
Mailing address
2750 ADELINE STE, BERKELEY, CA 94703-2279
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2025
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
9 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jul 17, 2025
—
520 Mendocino Avenue LLC
The Shamszad Family Living Trust
Grant Deed
—
Feb 28, 2020
—
Sasha G Shamszad
—
Deed
related
$5,250,000 · Wells Fargo Bank NA
Jun 29, 2018
$8,250,000
Sasha G Shamszad
Parkway Properties 14 LLC
Grant Deed
$250,000 · First Reliance Bank
Jul 29, 2013
—
Parkway Properties 14 LLC
California Corp
Grant Deed
related
$3,850,000 · Exchange Bank
May 1, 2002
$5,797,000
Parkway Properties 14 LLC
Carinalli,clement C & Ann M
Grant Deed
$4,150,000 · Sonoma National Bank
Jun 8, 1999
—
Wright Trust
Wright,michael J
Quit Claim Deed
related
—
Apr 27, 1999
—
Clement C Carinalli
Security Title Co
Grant Deed
$3,500,000 · National Bank The Redwoods
Dec 3, 1998
—
Security Title Co
Carinalli,clement C & Ann M
Grant Deed
related
—
Oct 7, 1998
—
Michael J Wright
Wright,catherine C
Quit Claim Deed
related
$700,000 · Bertolone Trust
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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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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