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
12 Properties Available
- Default
- Price-High To Low
- Price-Low To High
- Newest Listings
- Beds (Most)
- Baths (Most)
- Year Built (Newest)
- Square Feet (Biggest)
$1,190,000
3576 Hawkwood RD, Diamond Bar, CA 91765
MLS# TR26078621 Listed by Kelly Lee of Masters Realty Eastern Group$4,900
1640 Aspen Grove LN, Diamond Bar, CA 91765
MLS# 26672371 Listed by Melissa Westfall of Opendoor Brokerage Inc.$1,285,000
2205 Dublin #3, Diamond Bar, CA 91765
MLS# TR26068484 Listed by Wing Ng of Exp Realty of California Inc$899,500
$4,400
22881 Hilton Head Dr, Diamond Bar, CA 91765
MLS# TR26064017 Listed by Tao Bin of Ideal Property Management Inc.$2,650
24208 Sylvan Glen RD #E, Diamond Bar, CA 91765
MLS# SB26059640 Listed by Cindy Rodriguez-Lahlou of West Shores Realty, Inc.$549,900
22800 Hilton Head #304, Diamond Bar, CA 91765
MLS# CV26045489 Listed by Christian Alvarez of TOP PRODUCERS REALTY PARTNERS$2,350
1110 Cleghorn DR #D, Diamond Bar, CA 91765
MLS# CV26026561 Listed by Erick Guzman of RE/MAX TOP PRODUCERS$598,000
22709 Lakeway Dr #493, Diamond Bar, CA 91765
MLS# PW25259982 Listed by Christopher Shin of Nexteam Real Estate$499,000
2777 S Diamond Bar BLVD, Diamond Bar, CA 91765
MLS# WS26030238 Listed by Janice Shin of Pinnacle Real Estate Group$50,000
2695 Broken Feather LN, Diamond Bar, CA 91765
MLS# TR23216123 Listed by Diana Cheng of Country Queen Real Estate$950,000
- 1
MORTGAGE CALCULATOR

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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







