Mariah Cosio

Newport Beach CA

Ehomes

27 Closed Sales

$13.3M Total Value

$345K - $960K Price Range

$491.1K Average Price

Prior 5 years

About Mariah

As a RE/MAX® agent, I’m dedicated to helping my clients find the home of their dreams. Whether you are buying or selling a home or just curious about the local market, I would love to offer my support and services. I know the local community — both as an agent and a neighbor — and can help guide you through the nuances of our local market. With access to top listings, a worldwide network, exceptional marketing strategies and cutting-edge technology, I work hard to make your real estate experience memorable and enjoyable.

I look forward to the opportunity to work with you. Please don’t hesitate to contact me today!

Home Types: House, Condo, Commercial, Lot/Land, Manufactured

Years of Experience: 8

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	1
Total Value	$615,000
Average Sale Price	$615,000

Seller Deals
Total Deals	4
Total Value	$2,160,000
Average Sale Price	$540,000
Price Range	$400K - $630K

Buyer Deals
Total Deals	4
Total Value	$2,114,000
Average Sale Price	$528,500
Price Range	$379K - $960K

Seller Deals
Total Deals	8
Total Value	$4,332,000
Average Sale Price	$541,500
Price Range	$400K - $740K

Buyer Deals
Total Deals	19
Total Value	$8,929,000
Average Sale Price	$469,947
Price Range	$125K - $960K

5 Year View

Neighborhoods Mariah is Experienced In

Mariah's Active Listings

$999,000
- 4 Beds
- 2 Baths
- 2,011 Sq Ft
15043 Hayward St

Whittier, CA
Located on a serene street in Whittier, this 4-bedroom, 2-bathroom home offers 2,011 square feet of living space on a 6,594 square foot lot. PLUS 1 additional SPACIOUS BONUS ROOM that can easily be used as a bedroom , or office space! The beautifully remodeled kitchen opens directly to the living room, creating a bright, open-concept main living area perfect for entertaining. A 2-car garage adds

Mariah Cosio Re/Max Top Producers

Recently Sold

$615,000

Sold May 8, 2026
- 2 Beds
- 1 Bath
- 1,007 Sq Ft
4241 Cutler Ave

Baldwin Park, CA
- $611/SF
- 6 Days On Market
- Current Est. Value $614K
Mariah Cosio Re/Max Top Producers

$630,000

Sold May 6, 2024
- 3 Beds
- 3 Baths
- 1,438 Sq Ft
454 Golden Springs Dr

Unit A

Diamond Bar, CA
- 3% Below List
- $438/SF
- 44 Days On Market
- Current Est. Value $618K
Mariah Cosio Re/Max Top Producers

$400,000

Sold Apr 26, 2024
- Land
- 40.00 Acre Lot
4433 Quail Canyon Rd

San Bernardino, CA
- 10% Below List
- 27 Days On Market
- Current Est. Value $456K
Mariah Cosio Re/Max Top Producers

$515,000

Sold Apr 12, 2024
- 2 Beds
- 2 Baths
- 960 Sq Ft
16040 Leffingwell Rd

Unit 116

Whittier, CA
- 4% Above List
- $536/SF
- 21 Days On Market
- Current Est. Value $501K
Mariah Cosio Re/Max Top Producers

$407,000

Sold Jul 12, 2023
- 2 Beds
- 1 Bath
- 836 Sq Ft
18204 Via Calma

Unit 2

Rowland Heights, CA
- 2% Above List
- $487/SF
- 7 Days On Market
- Current Est. Value $414K
Mariah Cosio Re/Max Top Producers

$465,000

Sold Mar 8, 2023
- 3 Beds
- 2.5 Baths
- 1,465 Sq Ft
16408 Valencia Ave

Unit 814

Fontana, CA
- 4% Below List
- $317/SF
- 95 Days On Market
- Current Est. Value $478K
Mariah Cosio Re/Max Top Producers

$560,000

Sold Sep 1, 2021
- 3 Beds
- 2 Baths
- 1,587 Sq Ft
4485 Granada St

Montclair, CA
- 7% Below List
- $353/SF
- 18 Days On Market
- Current Est. Value $678K
Mariah Cosio Re/Max Top Producers

Awards and Designations

100% Club

Agent License: California 02032322

Mariah Cosio

(626) 542-1420

Homes for Sale by City

Mariah Cosio

About Mariah

Transaction History

Seller Deals

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods Mariah is Experienced In

Mariah's Listings and Deals

Mariah's Active Listings

Recently Sold

Awards and Designations