Brick Duplex with
For Sale
$329,000
127 S 51ST Street, Philadelphia, PA 19139
Multi-Family, PHILADELPHIA, PA
Property Size1,845 SF
Lot Size0.03 Acres
Price / SF$178.32
Days on Market156
Property Features for 127 S 51ST Street
General Information
Property type
Residential Multi Family
Property subtype
Duplex
Rooms
Basement
Parking features
On Street
Interior features
Kitchen - Eat-In
Subdivision
UNIVERSITY CITY
Elementary school district
THE SCHOOL DISTRICT OF PHILADELPHIA
Middle school district
THE SCHOOL DISTRICT OF PHILADELPHIA
High school district
THE SCHOOL DISTRICT OF PHILADELPHIA
Standard status
Active
Size
1,845 SF
Lot size
0.03 Acres
Taxes and HOA fees
Tax Annual Amount
143
Utilities
Heating system
Forced Air
Cooling system
Central Air
Amenities
laundry hook-up
Building Details
Year built
1910
Number of units
2
Building materials
Brick
Architectural style
Other
Listing Agency:
Keller Williams Real Estate - Princeton · Keller Williams Realty
(609) 987-8889
Listed By:
Helen Dundas · License #RS325250
(609) 890-3300
Added: Apr 14
Changed: Sep 13
Last Checked: Sep 16 at 5:06PM
MLS# PAPH2607878
Copyright © 2026 Bright MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Investment Insights
Based on property information with market context.
This 1,845-square-foot brick duplex, built in 1910, is configured as two residential units within an end-of-row corner property. The larger apartment offers three bedrooms, two full bathrooms, an open living and kitchen arrangement, hardwood flooring, and modern appliances. The second unit contains two bedrooms, one bathroom, carpeting, and a refreshed kitchen. A full basement provides laundry hookups. Forced-air heat and central air serve the property, while parking is available on the street.
The property is located at 127 S 51ST Street in Philadelphia’s University City area. It is near public transportation, the 52nd Street shopping corridor, the West Philadelphia YMCA, and Martin Luther King Park. The 0.0294-acre parcel is in ZIP Code 19139.
The property is located at 127 S 51ST Street in Philadelphia’s University City area. It is near public transportation, the 52nd Street shopping corridor, the West Philadelphia YMCA, and Martin Luther King Park. The 0.0294-acre parcel is in ZIP Code 19139.
Key Highlights
- Two residential units with three‑bedroom and two‑bedroom layouts
- 1,845 square feet on a 0.0294‑acre parcel
- Brick end‑of‑row corner construction; built in 1910
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
$29,021
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
8.82%
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%
$580,420
$580.4K
Cap Rate 7%
$414,586
$414.6K
Cap Rate 9%
$322,456
$322.5K
Market Conditions
NOI Build-Up for 1,845 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
$56.0K $30.36/SF
− Vacancy
−$3.2K −$1.76/SF
EGI
$52.8K $28.60/SF
− OpEx
−$23.7K −$12.87/SF
NOI
$29.0K $15.73/SF
Area
Philadelphia, PA
Vacancy
5.80%
Lease Rate
$30.36 /SF/Yr
Expense Ratio
45.00%
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%
$580,420
Cap Rate 7%
$414,586
Cap Rate 9%
$322,456
Alternative Uses
Best Use
Multifamily LT 5
$449.8K
$393.6K – $524.8K
NOI $31,485 @ 7.0% cap · market cap 9.57%
Second Best
Apartment 5plus
$414.6K
$362.8K – $483.7K
NOI $29,021 @ 7.0% cap · market cap 8.82%
Theoretical Best
—
—
same as Best Use
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Open Analytics
Current Use
Lease Details
2
Residential units
Yes
Paved road access
Location Intelligence
Trade Area within ½ mile
2,343
Businesses Nearby
Explore this area
Business Placement
Demographics for 19139, PA
43,281
Population
23,896
Households
1.8
Avg Household Size
36
Median Age
22%
College-Educated
86%
High-School Grad
1.8 sq mi
ZIP Area
24,045
Density / Sq Mi
$38,701
Median Household Income
$34,796
Median Earnings
$1,110
Median Rent
$118,700
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics
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 - Corner two-unit residence with separate living areas, updated kitchens, and on-street parking.
Where is this duplex located?
The property is located at 127 S 51ST Street Philadelphia, PA.
What is the asking price?
The asking price for this property is $329,000.
What are key features of this property?
This property features: Two residential units with three‑bedroom and two‑bedroom layouts; 1,845 square feet on a 0.0294‑acre parcel; Brick end‑of‑row corner construction; built in 1910
