House Prices

Castle Rock Diamond Bar, CA House Prices & Home Values 2026


Average Data

average house price$1,147,947
average size per house2805 ft²
average price per ft²393 $ / ft²

05/21/2026 - The value range (VR) for house prices in Castle Rock Diamond Bar, CA is $373.35/ sqft to $412.65/ sqft. An average home with 2805 sqft costs approximately $1,004,310 to $1,110,027. Diamond Bar, CA includes 1 ZIP codes and it is located in Los Angeles county. The lowest prices are found in ZIP 91765, while the highest are in ZIP 91765. The average price per sqare feet is $393. Our analysis is based on 12 property listings.

Avergage prices by ZIP codes Castle Rock Diamond Bar

91765249 $ / ft²




Historical development of home values in Castle Rock Diamond Bar

Year Estimated value (USD) Change vs. 2025
2010 $533,127 -53.6%
2011 $512,511 -55.4%
2012 $511,131 -55.5%
2013 $530,236 -53.8%
2014 $556,602 -51.5%
2015 $585,169 -49.0%
2016 $615,707 -46.4%
2017 $648,939 -43.5%
2018 $684,816 -40.3%
2019 $716,570 -37.6%
2020 $753,613 -34.4%
2021 $857,153 -25.3%
2022 $999,248 -13.0%
2023 $1,053,754 -8.2%
2024 $1,114,715 -2.9%
2025 $1,147,947 0.0%

Graph: estimated home values in Castle Rock Diamond Bar over time (USD)



Example: 100% financing house in Castle Rock Diamond Bar

Loan amount: $1,147,947

Interest rate: 5.75%

Fixed monthly payment: $6,702.02

Breakdown in the 1st month:
Interest portion: $5,504.41  –  Principal portion: $1,197.62

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $65,667.74 $14,756.56 $1,133,190.44
2 $64,795.89 $15,628.40 $1,117,562.04
3 $63,872.53 $16,551.76 $1,101,010.28
4 $62,894.62 $17,529.67 $1,083,480.61
5 $61,858.93 $18,565.36 $1,064,915.25
6 $60,762.06 $19,662.24 $1,045,253.01
7 $59,600.37 $20,823.92 $1,024,429.09
8 $58,370.05 $22,054.24 $1,002,374.85
9 $57,067.04 $23,357.25 $979,017.60
10 $55,687.05 $24,737.24 $954,280.36
11 $54,225.53 $26,198.77 $928,081.60
12 $52,677.65 $27,746.64 $900,334.95
13 $51,038.32 $29,385.97 $870,948.98
14 $49,302.14 $31,122.15 $839,826.83
15 $47,463.38 $32,960.91 $806,865.93
16 $45,515.99 $34,908.31 $771,957.62
17 $43,453.53 $36,970.76 $734,986.86
18 $41,269.23 $39,155.06 $695,831.80
19 $38,955.87 $41,468.42 $654,363.38
20 $36,505.83 $43,918.46 $610,444.92
21 $33,911.04 $46,513.25 $563,931.67
22 $31,162.95 $49,261.35 $514,670.32
23 $28,252.49 $52,171.80 $462,498.52
24 $25,170.07 $55,254.22 $407,244.30
25 $21,905.55 $58,518.75 $348,725.55
26 $18,448.14 $61,976.15 $286,749.40
27 $14,786.47 $65,637.83 $221,111.58
28 $10,908.45 $69,515.84 $151,595.74
29 $6,801.32 $73,622.97 $77,972.76
30 $2,451.53 $77,972.76 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Castle Rock Diamond Bar, CA


1500 sqft3900 sqft
Ø selling price$684,050$1,455,161
Ø fast selling$621,864$1,309,645
Ø high price sale$746,237$1,600,677

In 2026, houses in Castle Rock Diamond Bar, CA will be offered at an average price of $393 per square foot. A 1,500 sqft home priced at $684,050 is 22.06% more expensive per square foot than a 3,900 sqft home priced at $1,455,161. Home prices in Castle Rock Diamond Bar, CA vary significantly depending on the property’s condition and exact location. For a quick sale, a 2,700 sqft home should be listed at around $1,007,419. Sellers who can wait longer may achieve a higher price of up to $1,231,290.


Castle Rock Neighborhood in Diamond Bar, CA

The Castle Rock neighborhood in Diamond Bar, CA offers a serene, hillside setting with convenient suburban amenities.
Known for tree-lined streets and community pride, it provides a calm, family-friendly vibe close to everyday conveniences.

Location and Lifestyle

Residents enjoy quick access to the 57 and 60 freeways, streamlining commutes to Los Angeles, the San Gabriel Valley, and Orange County.
Nearby parks like Sycamore Canyon Park and Summitridge Park, plus the Diamond Bar Golf Course, add outdoor recreation minutes from home.
Shopping and dining along Grand Avenue and Diamond Bar Boulevard make errands and evenings out effortless.

Homes and Schools

Castle Rock real estate features mainly well-kept single-family homes and select townhomes on quiet cul-de-sacs with attractive curb appeal.
The area is served by the acclaimed Walnut Valley Unified School District, with many addresses near Castle Rock Elementary, Chaparral Middle, and Diamond Bar High School (verify current boundaries).
Buyers often seek this pocket for its blend of space, value, and the strong school reputation.

Market and Moving Tips

Inventory for homes for sale in Castle Rock Diamond Bar is typically limited, so well-priced listings can move quickly.
For the best results, monitor new listings, get pre-approved, and work with a local agent who knows micro-neighborhood trends and pricing.



FAQ – Home Values in Castle Rock Diamond Bar

What is the median home value in Castle Rock Diamond Bar in 2026?

In 2026, the typical home value in Castle Rock Diamond Bar is about $1,147,947 for an average home size of 2805 square feet. This corresponds to an average price of roughly $393 per square foot.

What is the average cost per square foot in Castle Rock Diamond Bar?

In 2026, homes in Castle Rock Diamond Bar sell for an average of around $393 per square foot, with a typical range between $373.35 and $412.65 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in Castle Rock?

The average home size in Castle Rock Diamond Bar is about 2805 square feet, with an estimated 2026 value around $1,147,947.



Neighborhoods close to Castle Rock Diamond Bar, CA

Phillips Ranch Pomona, CA275 $ / ft²
Via Verde San Dimas, CA327 $ / ft²
North San Gabriel San Gabriel, CA797 $ / ft²
Creekside Ontario, CA260 $ / ft²
Mt Baldy Village Mt Baldy, CA293 $ / ft²
Brightwood Monterey Park, CA472 $ / ft²
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