Side-by-Side Duplex
For Sale
$2,000,000
220 Knox, Costa Mesa, CA 92627
Two connected duplexes combine residential income units with private outdoor space, garages, and individual laundry hookups.
Property Size1,627 SF
Price / SF$614.63
Days on Market10
Property Features for 220 Knox
General Information
Standard status
Active
Size
1,627 SF
Property subtype
Duplex
Units
Unit Mix
4 x 2BR/1BA
Multifamily Units
4
Amenities
individual laundry hookups
three-season sunroom
Building Details
Building Size
1,627 SF
Year Built
1950
Buildings
2
Tenancy
Multi
Listing Agency:
The Oppenheim Group
(909) 260-6699
Listed By:
Justin Itzen · License #01993489
Source:
Altamirarealty
Added: Aug 20
Changed: Aug 28
Last Checked: Aug 29 at 2:17PM
Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of The Oppenheim Group
Investment Insights
Based on property information with market context.
This residential income property comprises two adjoining duplexes that operate around a shared driveway. Together, the buildings contain four two-bedroom, one-bathroom units, with approximately 1,627 square feet in each duplex and roughly 813 square feet per unit. Every residence includes individual laundry hookups. The rear apartments add private backyards and dedicated two-car garages, while one also includes a three-season sunroom. The buildings were constructed in 1950.
Heller Park directly borders the property, and the site has no side neighbors. Dining and retail along 17th Street are located a few blocks away, while Newport Beach’s Balboa Peninsula is approximately six minutes from the property. Three of the four units are tenant occupied, and the duplexes sit on two adjacent parcels.
Heller Park directly borders the property, and the site has no side neighbors. Dining and retail along 17th Street are located a few blocks away, while Newport Beach’s Balboa Peninsula is approximately six minutes from the property. Three of the four units are tenant occupied, and the duplexes sit on two adjacent parcels.
Key Highlights
- Two adjoining duplexes with four total units
- Four 2‑bedroom, 1‑bathroom units
- Each duplex measures approximately 1,627 sq. ft.; individual units are roughly 813 sq. ft.
Financial Insights
Estimated NOI and Cap Rate
NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$74,395
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
3.72%
Suggested Prices Based on Cap Rates
Cap rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$1,487,900
$1.5M
Cap Rate 7%
$1,062,786
$1.1M
Cap Rate 9%
$826,611
$826.6K
Market Conditions
NOI Build-Up for 3,254 SF
Vacancy — income lost from leasable area expected to sit empty during the year, subtracted from gross rent.
EGI (Effective Gross Income) — gross rent minus vacancy losses, the realistic income before paying operating costs.
OpEx (Operating Expenses) — recurring costs to operate the property (property tax, insurance, utilities, maintenance, management); excludes financing and capital improvements.
NOI (Net Operating Income) — income a property generates after operating costs but before financing and taxes.
Gross rent
$111.3K $34.20/SF
− Vacancy
−$5.0K −$1.54/SF
EGI
$106.3K $32.66/SF
− OpEx
−$31.9K −$9.80/SF
NOI
$74.4K $22.86/SF
Area
Costa Mesa, CA
Vacancy
4.50%
Lease Rate
$34.20 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$1,487,900
Cap Rate 7%
$1,062,786
Cap Rate 9%
$826,611
Alternative Uses
Best Use
Multifamily LT 5
$1.06M
$929.9K – $1.24M
NOI $74,395 @ 7.0% cap · market cap 3.72%
Second Best
Apartment 5plus
$986.7K
$863.4K – $1.15M
NOI $69,068 @ 7.0% cap · market cap 3.45%
Theoretical Best
Office A
$1.10M
$964.3K – $1.29M
NOI $77,146 @ 7.0% cap · market cap 3.86%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
4
Residential units
Multi-tenant
Tenancy
Location Intelligence
Trade Area within ½ mile
4,267
Businesses Nearby
Explore this area
Business Placement
Demographics for 92627, CA
61,764
Population
23,286
Households
2.7
Avg Household Size
36
Median Age
42%
College-Educated
85%
High-School Grad
6.4 sq mi
ZIP Area
9,651
Density / Sq Mi
$105,039
Median Household Income
$49,236
Median Earnings
$2,299
Median Rent
$1,074,900
Median Home Value
Market
Vacancy Rate% for Multifamily in West region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Two connected duplexes combine residential income units with private outdoor space, garages, and individual laundry hookups.
Where is this duplex located?
The property is located at 220 Knox Costa Mesa, CA.
What is the asking price?
The asking price for this property is $2,000,000.
What are key features of this property?
This property features: Two adjoining duplexes with four total units; Four 2‑bedroom, 1‑bathroom units; Each duplex measures approximately 1,627 sq. ft.; individual units are roughly 813 sq. ft.
