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Brick Duplex with Unfinished Apartment Space

79 S Main Street, Castleton on Hudson, NY 12033

For Sale
New
$299,900

MultiFamily, Castleton On Hudson, NY

Property Size1,900 SF
Lot Size0.19 Acres
Price / SF$157.84
Days on Market2

Property Features for 79 S Main Street

General Information

Property type Residential Multi Family
Property subtype Duplex
Zoning Multi Residence
Bedrooms 3
Bathrooms 2
Full bathrooms 1
Half bathrooms 1
Rooms Bedroom 2, Bedroom 3, Bathroom 1, Bedroom 1, Bathroom 2
Parking 6
Parking features Driveway, Off Street, Garage
Patio and Porch features Deck
Interior features Solid Surface Counters, Paddle Fan, High Speed Internet, Walk-In Closet(s), Built-in Features, Ceramic Tile Bath, Crown Molding
Basement Unfinished, Sump Pump
Lot features Level, Road Frontage, Cleared
View River
High school Maple Hill HS
Elementary school district Schodack
Middle school district Schodack
High school district Schodack
Directions Route 9J is Main Street - house next to library
Standard status Active
APN 384401 198.19-6-53
Size 1,900 SF
Lot size 0.19 Acres

Taxes and HOA fees

Tax Annual Amount 6248

Utilities

Sewer type Public Sewer
Heating system Forced Air, Natural Gas
Cooling system Central Air
Water source Public

Building Details

Year built 1850
Number of units 2
Flooring type Linoleum, Tile, Wood
Building materials Brick
Roof type Asphalt
Listing Agency: Berkshire Hathaway Home Services Blake · Berkshire Hathaway HomeServices
Listed By: Karen R Westman · License NY 30WE1064299
Added: Nov 9 Last Checked: Nov 10 at 8:06AM
MLS# 202629800

Copyright © 2026 Global MLS, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

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Investment Insights

Based on property information with market context.

This brick duplex property includes a restored 1,900-square-foot, three-bedroom home built in 1850. Updates include natural-gas heating, central air, a new roof, and replacement electrical and plumbing systems. The kitchen features a Forno eight-burner range, Bosch refrigerator and dishwasher, and granite counters. A laundry area and half bath sit off the kitchen, with a formal dining room and a full tile bath upstairs. Original wide-plank floors were refinished in 2022.

A separate area that previously contained apartments remains unfinished, with the interior stripped to the studs. The property is designated and taxed as a three-unit residence; the source also identifies a two-unit or in-law configuration as permissible. The 0.19-acre property is on Main Street, beside the library.

Key Highlights

  • Restored 1,900‑square‑foot, three‑bedroom brick home
  • Separate apartment area is unfinished, with interior framing exposed
  • Designated and taxed as a 3‑unit property; a 2‑unit or in‑law arrangement is permissible

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$24,886
Cap Rate
8.30%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$497,720 $497.7K
Cap Rate 7%
$355,514 $355.5K
Cap Rate 9%
$276,511 $276.5K
Market Conditions
NOI Build-Up for 1,900 SF
Gross rent
$37.6K $19.80/SF
− Vacancy
−$2.1K −$1.09/SF
EGI
$35.6K $18.71/SF
− OpEx
−$10.7K −$5.61/SF
NOI
$24.9K $13.10/SF
Area
Rensselaer County, NY
Vacancy
5.50%
Lease Rate
$19.80 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$497,720
Cap Rate 7%
$355,514
Cap Rate 9%
$276,511

Alternative Uses

Best Use
Multifamily LT 5
$355.5K
$311.1K – $414.8K (±1% cap)
NOI $24,886 @ 7.0% cap · market cap 8.30%
Second Best
Apartment 5plus
$329.5K
$288.3K – $384.4K (±1% cap)
NOI $23,063 @ 7.0% cap · market cap 7.69%
Theoretical Best
Office A
$475.0K
$415.6K – $554.1K (±1% cap)
NOI $33,248 @ 7.0% cap · market cap 11.09%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

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Lease Details

3
Residential units
Yes
Paved road access
Yes
Utilities to site

Location Intelligence

Trade Area within ½ mile

55
Businesses Nearby

Demographics for 12033, NY

8,076
Population
3,843
Households
2.1
Avg Household Size
46
Median Age
35%
College-Educated
93%
High-School Grad
28.5 sq mi
ZIP Area
283
Density / Sq Mi
$92,808
Median Household Income
$55,875
Median Earnings
$1,380
Median Rent
$267,500
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Average Price Trend$/SF for Duplexes in Rensselaer County, NY

$122 Jul
$110 Aug
$115 Sep
$112 Oct

Properties on Market for Duplexes in Rensselaer County

Jul
Aug
Sep
Oct

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025

Frequently Asked Questions

What type of property is this?
Duplex - A renovated brick residence pairs updated building systems with a separate interior area awaiting completion.
Where is this duplex located?
The property is located at 79 S Main Street Castleton on Hudson, NY.
What is the asking price?
The asking price for this property is $299,900.
What are key features of this property?
This property features: Restored 1,900‑square‑foot, three‑bedroom brick home; Separate apartment area is unfinished, with interior framing exposed; Designated and taxed as a 3‑unit property; a 2‑unit or in‑law arrangement is permissible
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