Triplex with Detached
New
For Sale
$899,999
3151 Del Mar, Rosemead, CA 91770
Two upper-level residences are vacant, while a separate two-bedroom house is occupied under a month-to-month lease.
Property Size1,880 SF
Days on Market2
Property Features for 3151 Del Mar
General Information
Standard status
Active
Size
1,880 SF
Property subtype
Investment
Site & Location
Highway Access
Yes
Road Access
Yes
Public Transit
Yes
Units
Unit Mix
2 x 1BR/1BA, 1 x 2BR/1BA
Multifamily Units
3
Building Details
Building Size
1,880 SF
Year Built
1946
Stories
1
Units
3
Listing Agency:
Century 21 Allstars
(562) 225-4802
Listed By:
Paola Melendez · License #01779654
(562) 225-4802
Source:
Elliman
Added: Aug 5
Changed: Aug 6
Last Checked: Aug 6 at 7:31AM
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 Century 21 Allstars
Investment Insights
Based on property information with market context.
Built in 1946, this triplex on Del Mar in Rosemead includes three residences with distinct layouts. Two vacant one-bedroom, one-bath units are positioned on the second floor and are described as livable. The third residence is a detached two-bedroom, one-bath home occupied under a month-to-month lease.
The property includes a long driveway, a two-car garage, and a private backyard serving the detached home. The yard may offer room for future expansion or an additional unit, subject to buyer verification and required agency approvals. Shopping, dining, schools, and major freeways are identified nearby. Walk Score is 76, Bike Score is 55, and Transit Score is 43.
The property includes a long driveway, a two-car garage, and a private backyard serving the detached home. The yard may offer room for future expansion or an additional unit, subject to buyer verification and required agency approvals. Shopping, dining, schools, and major freeways are identified nearby. Walk Score is 76, Bike Score is 55, and Transit Score is 43.
Key Highlights
- Three‑unit configuration with two one‑bedroom, one‑bath units and one detached two‑bedroom, one‑bath home
- Two second‑floor units are vacant and described as livable
- Detached two‑bedroom home occupied under a month‑to‑month lease
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
$32,832
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
3.65%
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%
$656,640
$656.6K
Cap Rate 7%
$469,029
$469.0K
Cap Rate 9%
$364,800
$364.8K
Market Conditions
NOI Build-Up for 1,880 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
$50.8K $27.00/SF
− Vacancy
−$3.9K −$2.05/SF
EGI
$46.9K $24.95/SF
− OpEx
−$14.1K −$7.48/SF
NOI
$32.8K $17.46/SF
Area
Los Angeles County, CA
Vacancy
7.60%
Lease Rate
$27.00 /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%
$656,640
Cap Rate 7%
$469,029
Cap Rate 9%
$364,800
Alternative Uses
Best Use
Multifamily LT 5
$469.0K
$410.4K – $547.2K
NOI $32,832 @ 7.0% cap · market cap 3.65%
Second Best
Apartment 5plus
$432.2K
$378.1K – $504.2K
NOI $30,251 @ 7.0% cap · market cap 3.36%
Theoretical Best
Office A
$1.01M
$880.7K – $1.17M
NOI $70,458 @ 7.0% cap · market cap 7.83%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Current Use
Lease Details
3
Residential units
Yes
Highway access
Yes
Paved road access
Location Intelligence
Trade Area within ½ mile
941
Businesses Nearby
Explore this area
Business Placement
Demographics for 91770, CA
59,360
Population
17,704
Households
3.4
Avg Household Size
43
Median Age
23%
College-Educated
68%
High-School Grad
6.5 sq mi
ZIP Area
9,132
Density / Sq Mi
$73,757
Median Household Income
$35,286
Median Earnings
$1,740
Median Rent
$712,700
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?
Triplex - Two upper-level residences are vacant, while a separate two-bedroom house is occupied under a month-to-month lease.
Where is this triplex located?
The property is located at 3151 Del Mar Rosemead, CA.
What is the asking price?
The asking price for this property is $899,999.
What are key features of this property?
This property features: Three‑unit configuration with two one‑bedroom, one‑bath units and one detached two‑bedroom, one‑bath home; Two second‑floor units are vacant and described as livable; Detached two‑bedroom home occupied under a month‑to‑month lease
