Two-Unit Duplex with
For Sale
$139,999
331 North 10th Street, Darby, PA 19023
Both residences are leased and include private entrances, porch access, and unfinished basement storage.
Property Size1,160 SF
Price / SF$120.69
Days on Market302
Property Features for 331 North 10th Street
General Information
Standard status
Active
Size
1,160 SF
Property subtype
Multi-Family / Fee Simple
Zoning
R-20 TWO FAMILY
Occupancy
100%
Units
Unit Mix
2 x 1BR
Multifamily Units
2
Additional Details
Public Transit
Yes
Taxes and HOA fees
Annual Taxes
$1,124
Amenities
shared backyard
unfinished basement
No
Oven - Single, Refrigerator, Stove
Carpet, Ceiling Fan(s), Kitchen - Eat-In
https://vimeo.com/1133172025?share=copy&fl=sv&fe=ci
No Pool
Above Grade, Below Grade
Porch(es)
Building Details
Year Built
1925
Listing Agency:
Real of Pennsylvania
(484) 744-4053
Listed By:
William Holder · License #AB069692
(484) 744-4053
Source:
Compass
Added: Nov 4, 2025
Changed: Aug 31
Last Checked: Aug 31 at 10:11PM
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 Real of Pennsylvania
Investment Insights
Based on property information with market context.
This 1,160-square-foot duplex at 331 North 10th Street contains two one-bedroom units, each with its own entrance. The property includes a large shared backyard, porch space, and an unfinished basement that provides additional storage. Interior features include eat-in kitchens, carpeting, ceiling fans, an oven, refrigerator, and stove. Constructed in 1925, the building is zoned R-20 TWO FAMILY.
Both units are currently leased. The property is in Darby, with public transportation, major travel routes, shopping, and dining nearby. Its two-unit configuration and separate access points support continued residential occupancy under the existing layout.
Both units are currently leased. The property is in Darby, with public transportation, major travel routes, shopping, and dining nearby. Its two-unit configuration and separate access points support continued residential occupancy under the existing layout.
Key Highlights
- Two‑unit duplex with 1,160 square feet of property size
- Two one‑bedroom units, each with a separate private entrance
- Both units are currently leased
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
$12,714
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
9.08%
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%
$254,280
$254.3K
Cap Rate 7%
$181,629
$181.6K
Cap Rate 9%
$141,267
$141.3K
Market Conditions
NOI Build-Up for 1,160 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
$20.9K $18.00/SF
− Vacancy
−$2.7K −$2.34/SF
EGI
$18.2K $15.66/SF
− OpEx
−$5.4K −$4.70/SF
NOI
$12.7K $10.96/SF
Area
Delaware County, PA
Vacancy
13.01%
Lease Rate
$18.00 /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%
$254,280
Cap Rate 7%
$181,629
Cap Rate 9%
$141,267
Alternative Uses
Best Use
Multifamily LT 5
$181.6K
$158.9K – $211.9K
NOI $12,714 @ 7.0% cap · market cap 9.08%
Second Best
Apartment 5plus
$166.1K
$145.4K – $193.8K
NOI $11,629 @ 7.0% cap · market cap 8.31%
Theoretical Best
Office A
$351.7K
$307.7K – $410.3K
NOI $24,619 @ 7.0% cap · market cap 17.59%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
2
Residential units
100%
Occupancy
Location Intelligence
Trade Area within ½ mile
988
Businesses Nearby
Explore this area
Business Placement
Demographics for 19023, PA
22,180
Population
9,089
Households
2.4
Avg Household Size
34
Median Age
17%
College-Educated
87%
High-School Grad
2.0 sq mi
ZIP Area
11,090
Density / Sq Mi
$48,962
Median Household Income
$37,110
Median Earnings
$1,240
Median Rent
$117,200
Median Home Value
Market
Vacancy Rate% for Multifamily in Northeast region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Both residences are leased and include private entrances, porch access, and unfinished basement storage.
Where is this duplex located?
The property is located at 331 North 10th Street Darby, PA.
What is the asking price?
The asking price for this property is $139,999.
What are key features of this property?
This property features: Two‑unit duplex with 1,160 square feet of property size; Two one‑bedroom units, each with a separate private entrance; Both units are currently leased
