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Property profile & analytics
OFF-MARKET
Estimated value
$7,510,000
Apartment buildings
145 18th St Costa Mesa, CA 92627-3033
Entity Owned
Property ID
US10-3047402
Property profile
Verified
Property type
Apartment buildings
Use group
APARTMENT HOUSE (5+ UNITS)
Year built
1959
Total area
14,549 SF
Lot
0.66 ac (28,798 SF)
APN
425-443-11
UPID
US10-3047402
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
by Request
CAP Approach
CAP
$4.75M
Comparable Approach
Comparable
$9.43M
Blend (final)
Blend
$7.51M
Owner & transaction history
The Serenade LP
The Serenade LP
since 2026
Last sale
$7.9M
7 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Restaurant
$9.9M
+42.4%
Industrial (general)
$9.3M
+33.2%
Retail stores
$8.9M
+27.5%
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 Costa Mesa submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Costa Mesa 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%
$5,145,000
6.5%
$4,750,000
7%
$4,410,000
Alternative Use
Use
Estimation
APARTMENT HOUSE (5+ UNITS)
$6,975,000
Current use
RESTAURANT
$9,925,000
Change: +42% · Conversion: Difficult
INDUSTRIAL (GENERAL)
$9,290,000
Change: +33% · Conversion: Difficult
RETAIL STORES
$8,890,000
Change: +27% · Conversion: Difficult
COMMERCIAL (GENERAL)
$8,805,000
Change: +26% · Conversion: Moderate
NEIGHBORHOOD: SHOPPING CENTER
$6,825,000
Change: -2% · Conversion: Difficult
AUTO REPAIR, GARAGE
$6,490,000
Change: -7% · Conversion: Difficult
Blend value · Realmo final
$7.51M
Range $6.76M – $8.26M · ±10% · vs last sale $7.93M (Feb 10 2026)
Last sale anchor
$7.93M
Feb 10 2026
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
$516 / 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
$90,195
Tax year 2024
Assessed value
$7,874,250
Assessed 2024
Previous assessed
$7,874,250
+0.0% YoY
Effective rate
1.15%
On assessed value
Assessed land
$6,999,335
Assessed improvement
$874,915
Applied tax rate
15.0000
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
1959
Heating
NONE
Stories
2
Units
18
Total area
14,549 SF
Lot
0.66 ac (28,798 SF)
APN
425-443-11
UPID
US10-3047402
Jurisdiction
ORANGE
Metro division
SANTA ANA-ANAHEIM-IRVINE, 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
$7.0M
RESTAURANT
Est. value
$9.9M
INDUSTRIAL (GENERAL)
Est. value
$9.3M
RETAIL STORES
Est. value
$8.9M
COMMERCIAL (GENERAL)
Est. value
$8.8M
NEIGHBORHOOD: SHOPPING CENTER
Est. value
$6.8M
AUTO REPAIR, GARAGE
Est. value
$6.5M
APARTMENT HOUSE (5+ UNITS) Current
RESTAURANT
INDUSTRIAL (GENERAL)
RETAIL STORES
COMMERCIAL (GENERAL)
NEIGHBORHOOD: SHOPPING CENTER
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
1959
Heating
NONE
Stories
2
Units
18
Lot
0.66 ac
Current owner
From public records · entity-resolved
The Serenade LP
Entity
Mailing address
PO BOX 13176, NEWPORT BEACH, CA 92658-5087
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
19 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Feb 10, 2026
$7,925,000
The Serenade LP
James P Colombo & Susan L Colombo R
Grant Deed
$4,750,000 · Everbank NA
Jan 26, 2021
—
James P Colombo
—
Deed
related
$3,800,000 · Homestreet Bank
Feb 28, 2019
—
David Meredith
145 18th Street Partners
Quit Claim Deed
related
—
Feb 28, 2019
$7,200,000
James P Colombo
Tracey Meredith
Grant Deed
$3,600,000 · Luther Burbank Savings
Feb 13, 2019
—
145 18th Street LP
—
Deed
related
$500,000 · Rm Dalton INC
Sep 2, 2008
—
145 18th Street Partners
Orange Street Triplexes Ltc
Grant Deed
$2,250,000 · Wachovia Mortgage Fsb
Oct 27, 2003
$2,915,000
Orange Street Triplexes Lyd
Abella Properties LLC
Grant Deed
$1,987,800 · Abn Amro Mortgage Group INC
Mar 19, 1999
$1,565,000
Contreras Trust
Arjomand,hossien A
Grant Deed
$840,000 · Capital Home Loans INC
Nov 8, 1994
—
Arjomand Hossien
Arjo,&
Quit Claim Deed
related
—
Mar 14, 1994
$94,000
Hossie A Arjomand
Thyen,delane J &
Grant Deed
$11,000 · Seller
Feb 8, 1989
$1,730,000
Thyen Delane J &
Silo Services
Trustees Deed
$1,137,000 · Home Savings Of America
Feb 8, 1989
—
Zahiri Hormoz
Mesa East Partne
Trustees Deed
related
—
—
—
Delane J Thyen
—
Deed Of Trust
related
$400,000 · Chrysler First Fin'l Services
—
—
145 18th Street LP
—
Deed Of Trust
related
$750,000 · Freedom Invs
—
—
Abella Properties LLC
—
Deed Of Trust
related
$150,000 · First Republic Bank
—
—
145 18th Street LP
—
Deed Of Trust
related
$500,000 · Rm Dalton INC
—
—
Hossien A Arjomand
—
Deed Of Trust
related
$5,000 · Individual
—
—
Thyen Delane J
—
Deed Of Trust
related
$600,000 · Downey S & L (wholesale)
—
—
Contreras Trust
—
Deed Of Trust
related
$840,000 · First Republic Bank
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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