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Side-by-Side Duplex with Garage
For Sale
$429,900

48 Mountain Street, Derby, CT 06418

Multi-Family For Sale, Units are Side-by-Side, Derby, CT

Property Size1,800 SF
Lot Size0.49 Acres
Price / SF$238.83
Days on Market105

Property Features for 48 Mountain Street

General Information

Property type Residential Multi Family
Property subtype Other
Zoning R-5
Bedrooms 3
Bathrooms 2
Full bathrooms 2
Rooms Basement, Bedroom 1, Bathroom 2, Bedroom 3, Bedroom 2, Bathroom 1
Patio and Porch features Porch
Exterior features Breezeway,Porch,Covered Deck
Fireplace 1
Basement Unfinished, Partial
Elementary school Per Board of Ed
High school Derby
Directions Suprabox on front door. Access to back unit located through front unit rear breezeway.
Standard status Active
Size 1,800 SF
Lot size 0.49 Acres

Taxes and HOA fees

Tax Year 2027
Tax Annual Amount 9520

Utilities

Sewer type Public Sewer
Heating system Baseboard, Radiant
Water source Public

Building Details

Year built 1950
Architectural style Other
Listing Agency: Real Estate Two
Listed By: Jenna Giampaolo
Added: May 12 Changed: Aug 23 Last Checked: Aug 24 at 10:06PM
MLS# 24172579

Copyright © 2026 SmartMLS, Inc. 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.

Located at 48 Mountain Street in Derby, this 1,800-square-foot duplex contains two side-by-side residential units. The front residence has a private porch and driveway entry, a living room, updated kitchen with dining area, updated full bathroom, two bedrooms, and a walk-in cedar closet. The rear residence is arranged around an open-concept living area and includes one bedroom, a large wraparound walk-in closet, and a kitchen. A covered deck is accessed through the living room sliders.

The property includes a two-car garage, breezeway, separate driveway access for each unit, and shared basement space for storage and utility access. Built in 1950 on 0.49 acres, the property has R-5 zoning, public water, public sewer, baseboard and radiant heating, and a fireplace. Major routes, shopping, and everyday amenities are noted nearby.

Key Highlights

  • 1,800‑square‑foot duplex with two side‑by‑side residential units
  • Front unit includes two bedrooms, an updated kitchen, and an updated full bathroom
  • Rear unit features one bedroom, an open‑concept layout, and a covered back deck

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Real Estate Agency Parking Lot & Garage Law Firm Bakery (Bike/Boat/Book/etc) Store Veterinary Clinic

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
Yes
Highway access

Location Intelligence

Trade Area within ½ mile

855
Businesses Nearby

Demographics for 06418, CT

12,297
Population
6,086
Households
2
Avg Household Size
42
Median Age
33%
College-Educated
89%
High-School Grad
5.0 sq mi
ZIP Area
2,459
Density / Sq Mi
$75,718
Median Household Income
$50,708
Median Earnings
$1,453
Median Rent
$243,500
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
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Frequently Asked Questions

What type of property is this?
Duplex - Two residential units offer separate entries, updated features, outdoor spaces, and shared basement storage.
Where is this duplex located?
The property is located at 48 Mountain Street Derby, CT.
What is the asking price?
The asking price for this property is $429,900.
What are key features of this property?
This property features: 1,800‑square‑foot duplex with two side‑by‑side residential units; Front unit includes two bedrooms, an updated kitchen, and an updated full bathroom; Rear unit features one bedroom, an open‑concept layout, and a covered back deck
More about this property
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