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Diamond Bar 91765 Diamond Bar
21307 Chirping Sparrow Road
$1,330,000
● House - Off Market

21307 Chirping Sparrow Road

Diamond Bar, CA 91765
bedrooms
4 Beds
bathrooms
3 Baths
square feet
2,302 Ft²
$6,629
Est. Monthly

About This Property

Located in a sought-after Diamond Bar neighborhood, this modern residence offers a unique and highly functional floor plan. The open-concept great room is filled with natural light and connects seamlessly to the kitchen, creating an inviting space for daily life. The well-appointed kitchen features abundant countertop space and stainless steel appliances, providing a practical and spacious area for cooking and gathering.

This home offers exceptional versatility with bedrooms located on both levels. The main floor features a desirable primary suite, a private retreat with an en-suite bathroom, a large, glass-enclosed shower, and direct sliding-door access to the backyard. Two additional bedrooms and a second full bathroom are also conveniently located on the main level, ideal for family, guests, or a home office.

The second level is dedicated to an expansive, loft-style bedroom. This private and oversized room offers a unique retreat and is highly adaptable, whether used as a junior suite, a combination media room and guest quarters, or a quiet study, providing valuable separation from the downstairs rooms.

Some upgrades include a new tile roof (2017), fresh paint outside (2018), a new condenser (2020), a whole-house repipe and retaining wall (2021), and a new water heater (2022). The property also includes a low-maintenance backyard, made easily accessible from the primary bedroom. Its location is exceptional, situated within the acclaimed Walnut Valley Unified School District and zoned for South Pointe Middle School and Diamond Bar High School. Residents are just a short distance from local shopping and dining, with convenient access to the 57 freeway for regional commuting.
Unit Size
2,302 Ft²
Days on Market
136 days
Land Size
0.25 acres
Price per sqft
$586
Property Type
House
Property Taxes
-
HOA Dues
-
Year Built
1980

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Last updated: 9 months ago (CRMLS #TR25223353)

Price History

Date / Event Date Event Price
Feb 6, 2026 Sold
Sold
Dec 31, 2025 In contract -
In contract
Dec 9, 2025 Price Decreased $1,350,000
↓ $38K (2.7%)
Price Decreased
Nov 20, 2025 Relisted $1,388,000
Relisted
Oct 31, 2025 In contract -
In contract
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Property Highlights

Garage
Air Conditioning
Fireplace

Building Info

Overview

    General

  • Year Built: 1980
  • Effective Year Built: 1980
  • Building Count: 1
  • Total Rooms: 7
  • Bedroom Count: 4
  • Bathroom Count: 3
  • Full Bathrooms: 3
  • Partial Bathrooms: 3
  • Building Condition: 1
  • Building Quality: 1
  • Construction Type: 17
  • Building Style: 21
  • Exterior Walls Type: 12
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 13
  • Floor Count: 100
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 2
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 9

    Dimensions

  • Lot Size Square Feet: 10,984
  • Lot Size Depth Feet: 1,590
  • Lot Size Frontage Feet: 650
  • Total Building Area: 2,302
  • Building Area: 2,302
  • Building Area Measurement: L

    Heating and Cooling

  • Fireplace Count: 1
  • Air Conditioning: 1
  • Heating: 3
  • Heated Square Feet: 2,302
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 1
  • Water Service: 2

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: 34161
  • Land Acres: 0000000252
  • Standard Land Use Code: 1001
  • County Land Use Code: 0104
  • Legal Description 1: *TR=34161 LOT/SEC 53

Neighborhood

  • School District Name: Walnut Valley Unified School District
  • Census Tract: 403325

Zoning

  • Zoning: LCR19000*

Geography

  • Assessors Map Reference: 97-D6
  • Subdivision Tract Number: 34161
  • Parcel: 8714-020-009
  • Lot: 53
  • Municipality: EAST /DIAMOND BAR
  • Latitude: 33.9629
  • Longitude: -117.843

    Address

  • Full Address: 21307 Chirping Sparrow Rd
  • Address - House Number: 21307
  • Address - Street Name: Chirping Sparrow
  • Address - Suffix Type: Rd
  • State: CA
  • City Name: Diamond Bar
  • Carrier Code: C086
  • 4-Digit Zip Code: 3702
  • Zip Code: 91765

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $1,200,119
  • Tax Rate Code Area: 10-116

    Appraisal Valuation

  • Standard Deviation: 0.0677
  • Valuation Date: Aug 04, 2023
  • Confidence Score: 96
  • Final Value: 1,013,111
  • High Value: 1,081,750
  • Low Value: 944,471

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $1,006,151
  • Assessed Land Value: $563,445
  • Assessed Improvements Value: $442,706

    Sales

  • Current Sale Contract Date: Jul 13, 2017
  • Current Sale Recording Date: Sep 01, 2017
  • Current Sale Price:
  • Current Sale Document Type: 36
  • Current Sale Input Document Number: 17-1002143
  • Previous Sale Recording Date: Aug 01, 2014
  • Previous Sale Contract Date: Jun 15, 2014
  • Previous Sale Amount: $780,000
  • Previous Sale Document Type: 36

    Financing

  • First Mortgage Financing Type: ADJ
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 21307 Chirping Sparrow Road built and last sold?
The property at 21307 Chirping Sparrow Road was built in 1980 and last sold on Jul 13, 2017 for $920,000.
How much is this home worth?
The estimated value of the home located at 21307 Chirping Sparrow Road is $0.
What are some comparable homes to 21307 Chirping Sparrow Road?
There are currently no comparable homes to 21307 Chirping Sparrow Road.