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Victorian Waterfront Duplex
For Sale
$495,000

43 S MAIN Street, Allentown, NJ 08501

MULTI_FAMILY - Victorian - ALLENTOWN, NJ

Property Size2,029 SF
Price / SF$243.96
Days on Market120

Property Features for 43 S MAIN Street

General Information

Property type Residential Multi Family
Property subtype Duplex
Rooms Basement
Parking features On Street
Appliances Oven/Range - Electric, Refrigerator
High school ALLENTOWN
Elementary school district UPPER FREEHOLD REGIONAL SCHOOLS
Middle school district UPPER FREEHOLD REGIONAL SCHOOLS
High school district UPPER FREEHOLD REGIONAL SCHOOLS
Standard status Active
Size 2,029 SF

Taxes and HOA fees

Tax Annual Amount 7424

Utilities

Heating system Steam
Water front features Waterfront
Water front 1

Building Details

Year built 1900
Number of units 2
Building materials Frame
Architectural style Victorian
Listing Agency: RE/MAX Select - Princeton · RE/MAX International
Listed By: Joe DeLorenzo · License #9483422
Added: Apr 14 Changed: Jul 30 Last Checked: Aug 11 at 5:06AM
MLS# NJMM2004384

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 Victorian duplex at 43 S Main Street features a frame two-story layout built in 1900. The lower unit is a 1-bedroom, 1-bath arrangement and is currently occupied on a lease. The upstairs unit offers 1 bedroom, 1 bath, plus a spacious loft that can be used as a bedroom, office, den, or other flexible space, and it is currently vacant for an owner-user.

The home is positioned with waterfront frontage on Connies Millpond in downtown Allentown, with a deep backyard designed to capture water views. Heating is provided by steam, and the property includes on-street parking. Appliances include an electric oven/range and a refrigerator.

With its combination of an occupied unit and an upstairs space ready for immediate occupancy, this property can support both live-in and rental use based on how you configure the loft.

Key Highlights

  • Victorian two‑story frame duplex built in 1900
  • Lower unit: 1 bedroom, 1 bath and currently occupied on a lease
  • Upstairs unit: 1 bedroom, 1 bath plus a spacious loft; currently vacant

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
$33,958
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
6.86%
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%
$679,160 $679.2K
Cap Rate 7%
$485,114 $485.1K
Cap Rate 9%
$377,311 $377.3K
Market Conditions
NOI Build-Up for 2,029 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
$51.9K $25.56/SF
− Vacancy
−$3.4K −$1.65/SF
EGI
$48.5K $23.91/SF
− OpEx
−$14.6K −$7.17/SF
NOI
$34.0K $16.74/SF
Area
Monmouth County, NJ
Vacancy
6.46%
Lease Rate
$25.56 /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%
$679,160
Cap Rate 7%
$485,114
Cap Rate 9%
$377,311

Alternative Uses

Best Use
Multifamily LT 5
$485.1K
$424.5K – $566.0K (±1% cap)
NOI $33,958 @ 7.0% cap · market cap 6.86%
Second Best
Apartment 5plus
$445.7K
$390.0K – $520.0K (±1% cap)
NOI $31,202 @ 7.0% cap · market cap 6.30%
Theoretical Best
Office A
$529.8K
$463.6K – $618.1K (±1% cap)
NOI $37,087 @ 7.0% cap · market cap 7.49%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Real Estate Agency HVAC Service Building Supply (Bike/Boat/Book/etc) Store Parking Lot & Garage Garden Center

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

Multi-tenant
Tenancy

Location Intelligence

Trade Area within ½ mile

287
Businesses Nearby

Demographics for 08501, NJ

6,574
Population
2,495
Households
2.6
Avg Household Size
46
Median Age
60%
College-Educated
96%
High-School Grad
27.2 sq mi
ZIP Area
242
Density / Sq Mi
$133,015
Median Household Income
$71,700
Median Earnings
$1,457
Median Rent
$530,100
Median Home Value

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025
Rey
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.

Frequently Asked Questions

What type of property is this?
Duplex - Two-story Victorian duplex with a downstairs one-bedroom unit and an upstairs one-bedroom plus loft, set on the waterfront.
Where is this duplex located?
The property is located at 43 S MAIN Street Allentown, NJ.
What is the asking price?
The asking price for this property is $495,000.
What are key features of this property?
This property features: Victorian two‑story frame duplex built in 1900; Lower unit: 1 bedroom, 1 bath and currently occupied on a lease; Upstairs unit: 1 bedroom, 1 bath plus a spacious loft; currently vacant
More about this property
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