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Renovated Three-Story Duplex
New
For Sale
$550,000

51 S MAIN STREET, Quakertown, PA 18951

Two-unit residential property with separate outdoor areas, flexible living space, and substantial off-street parking.

Property Size3,024 SF
Price / SF$181.88
Days on Market5

Property Features for 51 S MAIN STREET

General Information

Standard status Active
Size 3,024 SF
Total Parking Spaces 7
Property subtype Duplex

Additional Details

Multifamily Units 2

Building Details

Year Built 1920
Buildings 1
Stories 3
Listing Agency: Iron Valley Real Estate Legacy
Listed By: Cheryl Savini · License #RS286330
Source: Cummingsrealtors
Added: Sep 10 Changed: Sep 13 Last Checked: Sep 13 at 2:54PM

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 Iron Valley Real Estate Legacy

Investment Insights

Based on property information with market context.

Located at 51 S MAIN STREET in Quakertown, this renovated three-story duplex combines updated interiors with period character. The property contains 4 bedrooms and 4 full baths across two separate units, with distinct living areas, kitchens, and outdoor spaces. Interior details include hardwood and refinished pine flooring, exposed brick, built-in shelving, fireplaces, recessed lighting, tiled baths, and updated cabinetry. The first-floor unit also includes a laundry room, basement access, and a partially fenced backyard.

The upper residence extends across the second and third floors, adding two bonus rooms suitable for office, studio, or hobby use. Each apartment is equipped with four mini-split heating and cooling units, supported by oil-fired hot-water backup heat. Off-street parking accommodates up to 7 vehicles, while the property was built in 1920 and has a recorded property size of 3024.

Key Highlights

  • 4 bedrooms and 4 full baths across two separate residential units
  • Three‑story duplex with two bonus rooms on the third floor
  • Off‑street parking for up to 7 vehicles

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
$37,442
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
6.81%
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%
$748,840 $748.8K
Cap Rate 7%
$534,886 $534.9K
Cap Rate 9%
$416,022 $416.0K
Market Conditions
NOI Build-Up for 3,024 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
$70.4K $23.28/SF
− Vacancy
−$2.3K −$0.77/SF
EGI
$68.1K $22.51/SF
− OpEx
−$30.6K −$10.13/SF
NOI
$37.4K $12.38/SF
Area
Bucks County, PA
Vacancy
3.30%
Lease Rate
$23.28 /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%
$748,840
Cap Rate 7%
$534,886
Cap Rate 9%
$416,022

Alternative Uses

Best Use
Apartment 5plus
$534.9K
$468.0K – $624.0K (±1% cap)
NOI $37,442 @ 7.0% cap · market cap 6.81%
Second Best
Multifamily LT 5
$512.6K
$448.5K – $598.0K (±1% cap)
NOI $35,880 @ 7.0% cap · market cap 6.52%
Theoretical Best
Office A
$916.8K
$802.2K – $1.07M (±1% cap)
NOI $64,179 @ 7.0% cap · market cap 11.67%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

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Current Use

Duplexes

Suggested Use

Top Pick Real Estate Agency Law Firm Hair Salon Auto Repair Shop Spa & Massage Center Restaurant

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

102
Businesses Nearby

Demographics for 18951, PA

36,111
Population
14,862
Households
2.4
Avg Household Size
43
Median Age
33%
College-Educated
94%
High-School Grad
71.7 sq mi
ZIP Area
504
Density / Sq Mi
$95,084
Median Household Income
$49,570
Median Earnings
$1,341
Median Rent
$339,000
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

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025
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Frequently Asked Questions

What type of property is this?
Duplex - Two-unit residential property with separate outdoor areas, flexible living space, and substantial off-street parking.
Where is this duplex located?
The property is located at 51 S MAIN STREET Quakertown, PA.
What is the asking price?
The asking price for this property is $550,000.
What are key features of this property?
This property features: 4 bedrooms and 4 full baths across two separate residential units; Three‑story duplex with two bonus rooms on the third floor; Off‑street parking for up to 7 vehicles
More about this property
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