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
33 Properties Available
- Default
- Price-High To Low
- Price-Low To High
- Newest Listings
- Beds (Most)
- Baths (Most)
- Year Built (Newest)
- Square Feet (Biggest)
1219 Porto Grande, Diamond Bar, CA 91765
MLS# OC26159651 Listed by Eric Kang of Lou Edwards Financial$3,650
MLS# OC26159651$2,200
MLS# TR2615075723051 Paseo De Terrado #4, Diamond Bar, CA 91765
MLS# TR26148795 Listed by David Wang of Country Bridge Realty$3,600
MLS# TR2614879521725 Laurelrim #D, Diamond Bar, CA 91765
MLS# PW26146333 Listed by Sally Ragan of T.N.G. Real Estate Consultants$605,000
MLS# PW2614633322719 Lakeway DR #400, Diamond Bar, CA 91765
MLS# OC26147640 Listed by Laura Ginn of Berkshire Hathaway HomeService$400,000
MLS# OC261476402001 Silver Hawk #1, Diamond Bar, CA 91765
MLS# TR26145052 Listed by Gilbert Rivera of Marketing Specialists$789,000
MLS# TR26145052964 Summitridge DR, Diamond Bar, CA 91765
MLS# IV26144008 Listed by DRAKE MARTIN of COBALT PROPERTY MANAGEMENT$3,875
MLS# IV26144008$875,000
MLS# TR26135518$979,000
MLS# WS2612360222812 Hilton Head #43, Diamond Bar, CA 91765
MLS# PW26131685 Listed by Paul Segat of Paul Segat, Broker$325,000
MLS# PW26131685$699,000
MLS# TR2613638323308 Quail Summit, Diamond Bar, CA 91765
MLS# PW26135174 Listed by Katherine Candelaria of KC Realty Group$1,238,888
MLS# PW2613517424140 Avenida Rancheros #F, Diamond Bar, CA 91765
MLS# 26838419 Listed by Gayle Barnes of Next Level Properties$549,000
MLS# 26838419380 S Prospectors #91, Diamond Bar, CA 91765
MLS# CV26132575 Listed by Aaron Cavazos of CAVAZOS REAL ESTATE SERVICES$379,900
MLS# CV26132575$524,000
MLS# DW26130148$456,000
MLS# TR26127309$1,625,000
MLS# WS2605983922804 Hilton Head DR #40, Diamond Bar, CA 91765
MLS# WS26118948 Listed by JOHNNY TSENG of Pinnacle Real Estate Group$423,000
MLS# WS261189481752 Maple Hill, Diamond Bar, CA 91765
MLS# WS26122085 Listed by YAMING WU of First Team Real Estate$1,299,000
MLS# WS26122085$1,260,000
MLS# WS26117162$575,000
MLS# TR2611463023767 Highland Valley, Diamond Bar, CA 91765
MLS# TR26113880 Listed by David Lee of Century 21 Masters$569,000
MLS# TR2611388023025 Paseo De Terrado #5, Diamond Bar, CA 91765
MLS# TR26116618 Listed by Gilbert Rivera of Marketing Specialists$844,000
MLS# TR261166181160 N Del Sol, Diamond Bar, CA 91765
MLS# AR26113535 Listed by Ryan Go of Coldwell Banker Dynasty Arc.$979,000
MLS# AR26113535- 1
- 2
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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







