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Duplex with Detached One-Bedroom ADU

664 N 8th Avenue, Upland, CA 91786

For Sale
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A renovated three-bedroom main residence pairs with a separate unit featuring a full kitchen and its own rear entrance.

Property SizeContact for details
Days on Market37

Property Features for 664 N 8th Avenue

General Information

Standard status Active
Property subtype Multifamily

Units

Unit Mix 1 x 3BR/2BA, 1 x 1BR/1BA
Multifamily Units 2

Building Details

Buildings 2
Listing Agency: WHEELER STEFFEN SOTHEBY'S INT.
Listed By: Geoffrey Hamill · License CA #00997900
Source: Crexi
Added: Oct 9 Changed: Nov 12 Last Checked: Nov 12 at 5:17AM

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 WHEELER STEFFEN SOTHEBY'S INT.

Rey
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Investment Insights

Based on property information with market context.

The property includes a remodeled three-bedroom, two-bath main residence and a newly built detached one-bedroom, one-bath ADU. The primary home has a semi-open layout, updated kitchen and bathrooms, tile flooring, contemporary lighting, and a newer HVAC system. The ADU provides a full kitchen, walk-in shower, storage, mini-split HVAC, and separate access from the rear.

Outdoor features include front and rear lawns, a covered patio, updated irrigation, and a gated rear driveway with additional on-site parking. The property is near San Antonio Regional Hospital and downtown Village shopping.

Key Highlights

  • Detached ADU with 1 bedroom and 1 bathroom
  • Main residence offers 3 bedrooms and 2 baths
  • ADU includes a full kitchen, walk‑in shower, storage, and mini‑split HVAC

Property Analytics

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Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

2,283
Businesses Nearby

Demographics for 91786, CA

55,763
Population
20,094
Households
2.8
Avg Household Size
36
Median Age
30%
College-Educated
88%
High-School Grad
8.9 sq mi
ZIP Area
6,266
Density / Sq Mi
$86,961
Median Household Income
$43,050
Median Earnings
$1,923
Median Rent
$607,100
Median Home Value
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Market

Average Price Trend$/SF for Duplexes in San Bernardino County, CA

$321 Jul
$336 Aug
$341 Sep
$339 Oct

Properties on Market for Duplexes in San Bernardino County

Jul
Aug
Sep
Oct

Vacancy Rate% for Multifamily in West region

7% 2022
7.8% 2023
8.6% 2024
8.6% 2025

Frequently Asked Questions

What type of property is this?
Duplex - A renovated three-bedroom main residence pairs with a separate unit featuring a full kitchen and its own rear entrance.
Where is this duplex located?
The property is located at 664 N 8th Avenue Upland, CA.
What is the asking price?
The asking price for this property is $850,000.
What are key features of this property?
This property features: Detached ADU with 1 bedroom and 1 bathroom; Main residence offers 3 bedrooms and 2 baths; ADU includes a full kitchen, walk‑in shower, storage, and mini‑split HVAC
(909) 621-0500 Call to check price and availability
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