See Home Value
Diamond Bar 91789 Diamond Bar
20723 Northampton Street
$905,000
● House - Off Market

20723 Northampton Street

Walnut, CA 91789
bedrooms
4 Beds
bathrooms
2 Baths
square feet
1,487 Ft²
$4,592
Est. Monthly

About This Property

Rare opportunity to own in the prestigious Walnut Valley Unified School District, served by top-rated assigned schools that currently earn GreatSchools ratings of 9/10 and 10/10 from elementary through high school - walk the kids to Walnut Elementary right up the street, then send them on to South Pointe Middle School and Walnut High School. Top-tier education from K through 12, all within the neighborhood, and one of the strongest drivers of long-term home value in the region. A rare find for families and investors alike.

The open floor plan offers 4 generously sized bedrooms and 2 well-appointed bathrooms, with a comfortable flow from room to room. The kitchen features quartz countertops and abundant natural light. Recessed lighting throughout and double pane windows keep the home bright, quiet and energy efficient. Step outside to the oversized covered patio and a well-proportioned, spacious backyard on an 8,125 sq ft lot, bathed in gentle Southern California breezes - an outdoor retreat you will enjoy year-round.

Conveniently located with easy access to the 57, 60 & 10 Freeways - connecting you to employment centers, entertainment, and beyond. Surrounded by supermarkets, restaurants, and shopping centers, shopping and errands are easy and everything you need is within reach. Enjoy nearby community parks and Royal Vista Golf Course, rounding out a location that truly has it all.

Safe, Quiet & Established: A welcoming, well-maintained community with tree-lined streets and a strong sense of neighborhood pride - the kind of place where families put down roots and build lasting memories across generations, and where strong rental demand ensures solid long-term value growth.

Attached 2-car garage | Central A/C & Heat | Recessed Lighting | Double Pane Windows | Single-Level Living - No Stairs | 8,095 Sq Ft Lot

Whether you are looking for the perfect family home or a smart long-term investment - this is the one.
Unit Size
1,487 Ft²
Days on Market
97 days
Land Size
0.19 acres
Price per sqft
$629
Property Type
House
Property Taxes
-
HOA Dues
-
Year Built
1964

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Last updated: 24 days ago (CRMLS #TR26134161)

Price History

Date / Event Date Event Price
Sep 25, 2026 Sold
Sold
Aug 29, 2026 In contract -
In contract
Aug 14, 2026 Price Decreased $935,000
↓ $25K (2.6%)
Price Decreased
Aug 1, 2026 Price Decreased $960,000
↓ $36K (3.6%)
Price Decreased
Jul 6, 2026 Relisted $996,000
Relisted
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Property Highlights

Garage
Air Conditioning
Fireplace

Building Info

Overview

    General

  • Year Built: 1964
  • Effective Year Built: 1965
  • Building Count: 1
  • Bedroom Count: 4
  • Bathroom Count: 2
  • Full Bathrooms: 2
  • Partial Bathrooms: 2
  • Building Condition: 0
  • Building Quality: 4
  • Construction Type: 17
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 8,095
  • Total Building Area: 1,487
  • Building Area: 1,487
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 1
  • Heating: 3
  • Heated Square Feet: 1,487
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: 29353
  • Land Acres: 0000000186
  • Standard Land Use Code: 1001
  • County Land Use Code: 0100
  • Legal Description 1: TRACT NO 29353 LOT/SEC 20

Neighborhood

  • School District Name: Walnut Valley Unified School District
  • Census Tract: 403326

Zoning

  • Zoning: LCRA8000*

Geography

  • Assessors Map Reference: 97-C2
  • Subdivision Tract Number: 29353
  • Parcel: 8760-018-024
  • Lot: 20
  • Municipality: EAST /DIAMOND BAR
  • Latitude: 34.0023
  • Longitude: -117.852

    Address

  • Full Address: 20723 Northampton St
  • Address - House Number: 20723
  • Address - Street Name: Northampton
  • Address - Suffix Type: St
  • State: CA
  • City Name: Walnut
  • Carrier Code: C018
  • 4-Digit Zip Code: 3134
  • Zip Code: 91789

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $862,525
  • Tax Rate Code Area: 10-074

    Appraisal Valuation

  • Standard Deviation: 0.2116
  • Valuation Date: Aug 04, 2023
  • Confidence Score: 71
  • Final Value: 923,489
  • High Value: 1,118,988
  • Low Value: 727,990

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $716,227
  • Assessed Land Value: $548,001
  • Assessed Improvements Value: $168,226

    Exemptions

  • Homeowner Exemption: Yes

    Sales

  • Current Sale Contract Date: Dec 03, 2018
  • Current Sale Recording Date: Dec 19, 2018
  • Current Sale Price:
  • Current Sale Document Type: 36
  • Current Sale Input Document Number: 18-1284482
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Diamond Bar


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Frequently Asked Questions

When was property at 20723 Northampton Street built and last sold?
The property at 20723 Northampton Street was built in 1964 and last sold on Dec 3, 2018 for $668,000.
How much is this home worth?
The estimated value of the home located at 20723 Northampton Street is $974,106.
What are some comparable homes to 20723 Northampton Street?
There are currently no comparable homes to 20723 Northampton Street.