MARKET SNAPSHOT
- ?Sold Listings
- ?Average Sales Price
- ?Average Days on Market
- Any
- $ 100,000
- $ 150,000
- $ 200,000
- $ 400,000
- $ 800,000
- Any
- $ 200,000
- $ 300,000
- $ 400,000
- $ 600,000
- $ 1,000,000
- List
- Mixed
- Map
20 Properties Available In 91765
- Default
- Price-High To Low
- Price-Low To High
- Newest Listings
- Beds (Most)
- Baths (Most)
- Year Built (Newest)
- Square Feet (Biggest)
561 Crooked Arrow, Diamond Bar, CA 91765
MLS# PW26088931 Listed by Kimberly Nguyen of America First Real Estate$1,090,000
1328 Misty CT, Diamond Bar, CA 91765
MLS# TR26088596 Listed by Jane Kuo of Pinnacle Real Estate Group$4,900
21113 Blossom Way, Diamond Bar, CA 91765
MLS# OC26087645 Listed by Siyi Li of Keller Williams Realty Irvine$1,299,999
24377 Northview PL, Diamond Bar, CA 91765
MLS# DW26084084 Listed by Debra LaCour Herrera of RE/MAX Dynasty$888,000
1507 Kiowa Crest DR, Diamond Bar, CA 91765
MLS# PW26081692 Listed by Austin Choi of Coldwell Banker Best Realty$1,288,800
$928,000
1683 S Diamond bar BLVD, Diamond Bar, CA 91765
MLS# IV26082556 Listed by LIHUI LI of Universal Elite Realty$715,000
2606 Castle Rock RD, Diamond Bar, CA 91765
MLS# PW26080655 Listed by Carolina Moreno of Synergy Real Estate$998,000
24220 Sylvan Glen #G, Diamond Bar, CA 91765
MLS# OC26078394 Listed by David Berman of Coldwell Banker Realty$529,000
23650 Monument Canyon #E, Diamond Bar, CA 91765
MLS# WS26074172 Listed by PAUL LI of Harvest Real Estate, Inc.$638,000
$1,399,000
2695 Shady Ridge, Diamond Bar, CA 91765
MLS# OC26060584 Listed by Tim Mehl of Rodeo Realty - Bev. Hills - Ca$6,188,888
$1,268,888
$658,880
755 Racquet Club #476, Diamond Bar, CA 91765
MLS# OC26046164 Listed by Connie Escobar-Theron of Realty One Group West$489,000
24215 Delta Drive, Diamond Bar, CA 91765
MLS# AR26045683 Listed by Qiao Huang of Pinnacle Real Estate Group$1,600,000
$1,190,000
$1,498,000
$1,699,900
20920 Running Branch, Diamond Bar, CA 91765
MLS# TR25276063 Listed by Jiake Wu of Northland Real Estate Group$1,380,000
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Market Trends
- Average Sold Price
- Median Sold Price
- Highest Sold Price
- Lowest Sold Price
Market Trends are calculated using MLS® sold listing data
Katy Costello is a dedicated real estate professional with nearly a decade of experience, beginning her career in 2015 in Phoenix, Arizona, before relocating to Orange County, California. Passionate about helping clients build wealth through real estate, she is known for her meticulous research, relentless dedication, and commitment to maintaining the highest standards of integrity in every transaction.
Katy ensures that each client experience is marked by trust, professionalism, and exceptional service. Her approach combines deep market knowledge with a steadfast commitment to helping clients achieve their real estate goals, whether they are buying, selling, or investing.
Outside of her work in California, Katy and her partner Jaime are expecting their first child building their first Airbnb property in El Sargento, Baja California Sur, Mexico. In their free time, they enjoy fishing, exploring the local culture, and indulging in the area's vibrant cuisine.
Katy’s personal and professional experiences fuel her passion for real estate, and she is dedicated to making every client's journey seamless and successful







