Two-Unit Brick Row-Home
For Sale
$300,000
129 S 12th St, Allentown, PA 18101
Brick duplex with separate entrances, a private rear yard, and a first-floor one-bedroom unit alongside a second-floor two-bedroom unit.
Property Size2,070 SF
Price / SF$144.93
Days on Market47
Property Features for 129 S 12th St
General Information
Standard status
Active
Size
2,070 SF
Property subtype
Residential Income
Units
Unit Mix
1 x 1BR, 1 x 2BR
Multifamily Units
2
Additional Details
Public Transit
Yes
Amenities
private rear yard
off-street parking access
separate entrances
Building Details
Buildings
1
Construction
brick row home
Listing Agency:
Allentown City Realty
(484) 505-9222
Listed By:
Carlos A. Nunez
(484) 505-9222
Source:
Exprealty
Added: Jul 17
Changed: Aug 21
Last Checked: Aug 30 at 9:27PM
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 Allentown City Realty
Investment Insights
Based on property information with market context.
Located at 129 S 12th St in Allentown, this 2,070-square-foot brick row-home duplex contains two separate residential units. The first-floor apartment has one bedroom, while the second-floor apartment provides two bedrooms, creating a varied unit mix within the building. Each unit has its own entrance, and the property includes spacious living areas.
Outdoor features include a private rear yard and access to off-street parking. The property is positioned near shopping, restaurants, schools, public transportation, and major commuter routes, providing convenient connections to everyday services and area travel corridors.
Outdoor features include a private rear yard and access to off-street parking. The property is positioned near shopping, restaurants, schools, public transportation, and major commuter routes, providing convenient connections to everyday services and area travel corridors.
Key Highlights
- 2,070‑square‑foot brick row‑home duplex at 129 S 12th St, Allentown, PA
- First‑floor apartment includes 1 bedroom
- Second‑floor apartment includes 2 bedrooms
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
$21,713
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
7.24%
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%
$434,260
$434.3K
Cap Rate 7%
$310,186
$310.2K
Cap Rate 9%
$241,256
$241.3K
Market Conditions
NOI Build-Up for 2,070 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
$33.5K $16.20/SF
− Vacancy
−$2.5K −$1.22/SF
EGI
$31.0K $14.99/SF
− OpEx
−$9.3K −$4.50/SF
NOI
$21.7K $10.49/SF
Area
Allentown, PA
Vacancy
7.50%
Lease Rate
$16.20 /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%
$434,260
Cap Rate 7%
$310,186
Cap Rate 9%
$241,256
Alternative Uses
Best Use
Multifamily LT 5
$310.2K
$271.4K – $361.9K
NOI $21,713 @ 7.0% cap · market cap 7.24%
Second Best
Apartment 5plus
$272.8K
$238.7K – $318.3K
NOI $19,099 @ 7.0% cap · market cap 6.37%
Theoretical Best
Specialty Retail
$406.7K
$355.8K – $474.5K
NOI $28,467 @ 7.0% cap · market cap 9.49%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
2,413
Businesses Nearby
Explore this area
Business Placement
Demographics for 18101, PA
5,108
Population
2,686
Households
1.9
Avg Household Size
32
Median Age
19%
College-Educated
79%
High-School Grad
0.3 sq mi
ZIP Area
17,027
Density / Sq Mi
$41,542
Median Household Income
$34,397
Median Earnings
$1,337
Median Rent
$153,800
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 - Brick duplex with separate entrances, a private rear yard, and a first-floor one-bedroom unit alongside a second-floor two-bedroom unit.
Where is this duplex located?
The property is located at 129 S 12th St Allentown, PA.
What is the asking price?
The asking price for this property is $300,000.
What are key features of this property?
This property features: 2,070‑square‑foot brick row‑home duplex at 129 S 12th St, Allentown, PA; First‑floor apartment includes 1 bedroom; Second‑floor apartment includes 2 bedrooms
