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111 Properties Available
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- Price-High To Low
- Price-Low To High
- Newest Listings
- Beds (Most)
- Baths (Most)
- Year Built (Newest)
- Square Feet (Biggest)
- 1/51 51Open Fri 1PM-4PM
$ 1,369,000
4 Beds2 Baths1,647 SqFt17291 Ash Street, Fountain Valley, CA 92708
Single Family Home
Listed by Lily Campbell of First Team Real Estate
- 1/53 53Open Fri 1PM-4PM
$ 2,149,000
4 Beds4 Baths3,176 SqFt9588 Shimizu River CIR, Fountain Valley, CA 92708
Single Family Home
Listed by Lily Campbell of First Team Real Estate
- 1/29 29Open Sat 2PM-4PM
$ 1,050,000
3 Beds2 Baths1,191 SqFt17689 Los Jardines W, Fountain Valley, CA 92708
Condo
Listed by Michael Tsamoudakis of Compass
- 1/47 47Open Fri 10:30AM-1:30PM
$ 1,950,000
4 Beds3 Baths2,409 SqFt18439 Colville ST, Fountain Valley, CA 92708
Single Family Home
Listed by Patty Wisdom of Realty One Group West
- 1/68 68Open Sat 11AM-1:30PM
$ 1,799,000
6 Beds4 Baths2,445 SqFt16027 Elbert CIR, Fountain Valley, CA 92708
Single Family Home
Listed by Hieu Nguyen of VN Mortgage & Realty Co.
- 3DOpen Fri 4PM-6PM
$ 599,990
2 Beds2 Baths1,328 SqFt17769 Liberty LN, Fountain Valley, CA 92708
Condo
Listed by Elizabeth Do of Keller Williams Realty
- 3DOpen Fri 12PM-2PM
$ 1,459,000
4 Beds2 Baths1,916 SqFt9248 Jasmine AVE, Fountain Valley, CA 92708
Single Family Home
Listed by Elizabeth Do of Keller Williams Realty
- 3DOpen Fri 4PM-6PM
$ 185,000
4 Beds2 Baths1,419 SqFt124 Sumac LN, Fountain Valley, CA 92708
Manufactured Home
Listed by Elizabeth Do of Keller Williams Realty
- 1/42 42Open Sat 1PM-4PM
$ 1,799,000
4 Beds3 Baths2,025 SqFt17217 Oak ST, Fountain Valley, CA 92708
Single Family Home
Listed by Lily Campbell of First Team Real Estate
- 1/49 49Open Sat 11AM-3PM
$ 1,597,000
4 Beds3 Baths2,409 SqFt15927 Los Reyes Street, Fountain Valley, CA 92708
Single Family Home
Listed by Bac Nguyen of eXp Realty of California, Inc.
- 1/40 40Open Sun 1PM-4PM
$ 1,585,000
5 Beds3 Baths2,147 SqFt17550 Chestnut ST, Fountain Valley, CA 92708
Single Family Home
Listed by Lily Campbell of First Team Real Estate
- 1/19 19Open Sun 11AM-3PM
$ 161,000
3 Beds2 Baths1,344 SqFt201 Road Runner LN, Fountain Valley, CA 92708
Manufactured Home
Listed by EDUARDO CHAVEZ AGUILAR of Century 21 Masters
- 1/47 47Open Sat 1PM-4PM
$ 1,746,800
5 Beds3 Baths2,640 SqFt17148 Santa Catherine ST, Fountain Valley, CA 92708
Single Family Home
Listed by Sandra Sarro of Coldwell Banker Realty
- 1/29 29Open Sun 11AM-2PM
$ 260,000
3 Beds2 Baths1,442 SqFt300 Magpie LN, Fountain Valley, CA 92708
Manufactured Home
Listed by Yvette Hitchens of Yvette Hitchens, Broker
- 1/42 42Open Sat 1PM-4PM
$ 2,380,000
6 Beds6 Baths3,234 SqFt17805 Winterberry ST, Fountain Valley, CA 92708
Single Family Home
Listed by Vicki Paparella of Keller Williams Realty
- 1/27 27Open Sun 1PM-3PM
$ 979,000
3 Beds3 Baths1,690 SqFt18269 Sanmian Ct, Fountain Valley, CA 92708
Single Family Home
Listed by Sigal Silvers of LRS Realty & Management Inc
- 1/36 36Open Sat 12PM-2PM
$ 239,000
3 Beds2 Baths1,512 SqFt209 Road Runner LN, Fountain Valley, CA 92708
Manufactured Home
Listed by Lynsey Calkins of eXp Realty of California, Inc.
- 1/39 39Open Sun 12PM-3PM
$ 1,390,000
4 Beds3 Baths1,795 SqFt17475 Santa Lucia ST, Fountain Valley, CA 92708
Single Family Home
Listed by Truc Truong of Superior Real Estate Group
- 1/55 55Open Fri 11AM-12PM
$ 1,399,999
5 Beds3 Baths2,710 SqFt8740 Hudson River CIR, Fountain Valley, CA 92708
Single Family Home
Listed by Tatiana Veres of Keller Williams Realty
- 1/32 32Open Fri 1PM-5PM
$ 1,639,000
4 Beds3 Baths2,302 SqFt16513 Mount Neota ST, Fountain Valley, CA 92708
Single Family Home
Listed by Duy Nguyen of Superior Real Estate Group
- 1/57 57New
$ 489,000
1 Bed1 Bath702 SqFt16440 Atherton #35, Fountain Valley, CA 92708
Condo
Listed by Nam Ba Nguyen of Realty One Group West
- 1/23 23New
$ 1,850
1 Bath720 SqFt11115 Slater AVE #B, Fountain Valley, CA 92708
Condo
Listed by Angie Weeks of First Team Real Estate
- 1/16 16New
$ 4,750
4 Beds3 Baths1,528 SqFt9657 Lark CIR, Fountain Valley, CA 92708
Single Family Home
Listed by Matthew Wu of American Realty Services
- 1/53 53Active Under Contract
$ 1,699,000
4 Beds3 Baths2,842 SqFt10531 Angel AVE, Fountain Valley, CA 92708
Single Family Home
Listed by Timothy Olivadoti of Seven Gables Real Estate
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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