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Mark Rantis

Mark Rantis
Real Estate Agent (Broker)
Barrington IL

Broker (IL: 475134703)

18 years experience

REALTOR® 6 Active Listings Serves Lake County, IL
View on Realtor.com

Contact Information

Brokerage
Y Realty

Office Website
Office Address
600 Hart Rd Ste 105
Barrington, IL  60010
(Lake County)
Office Phone
877-976-5348
Office Fax
Mobile
847-606-5272
Email
m***@**************.com
Show Email for $5

Service Areas

Prospect Heights: IL Arlington Heights: IL Mount Prospect: IL Chicago: IL Itasca: IL Elk Grove Village: IL Inverness: IL Tower Lakes: IL North Barrington: IL South Barrington: IL Hoffman Estates: IL Fox River Grove: IL Dundee: IL Lake Zurich: IL Port Barrington: IL Barrington Hills: IL Deer Park: IL Barrington: IL Island Lake: IL Lake Barrington: IL Glenview: IL Norwood Park: IL Park Ridge: IL Palatine: IL Buffalo Grove: IL Schaumburg: IL Niles: IL Rolling Meadows: IL Des Plaines: IL Northbrook: IL Glencoe: IL Wheeling: IL Bloomingdale: IL Roselle: IL Morton Grove: IL Skokie: IL

About Mark Rantis

Mark Rantis encountered significant challenges when relocating his father to a senior living facility, particularly due to a lack of guidance and resources. This experience highlighted a critical gap in the real estate sector, prompting him to dedicate his career to assisting families through what can be a taxing transition. He aims to serve as the "Easy" button for those navigating these complex moves.

To enhance his expertise in this niche market, Rantis actively participates on the Board of Directors and the State Board for Illinois Continuity of Care, a nonprofit organization focused on supporting seniors and aging populations. His commitment to excellence has earned him recognition, including the 2021 Chicago Agent Magazine Who's Who and seven consecutive Five Star Real Estate Agents Awards from Chicago Magazine.

Rantis attributes his success to a deep understanding of his clients' needs, leveraging his knowledge and established systems to help them achieve their real estate objectives. This approach has enabled him to assist countless clients in buying, selling, and investing in real estate. Remarkably, 98% of his business is generated through referrals, a testament to his ability to build and maintain strong relationships.

His professional demeanor balances a casual approach with the seriousness required in critical situations. Rantis is a self-reflective individual who prioritizes continuous growth and learning from past experiences, setting high standards for himself and his business practices. Drawing on lessons learned from his football days, he emphasizes the importance of integrity and respect in his interactions. "This is a people business," he notes, "and I was raised to treat others as I would like to be treated. These values have always driven my success."

Lake County, IL Real Estate Market Analysis (Single Family Homes)

$760,157
Avg. Listing Price
From Mark's portfolio
3.6 / 3.0
Avg. Beds/Baths
Typical property size
2,826 sf
Avg. Square Footage
Interior living space
1510
Active Listings
Current inventory

Lake County, Illinois represents one of the most dynamic and geographically diverse real estate markets in the Chicago metropolitan area, stretching from affluent lakefront communities to rapidly growing suburban developments. With 3,982 actively licensed real estate agents operating throughout the county, this market demonstrates remarkable depth and professional expertise that reflects the region's complex housing landscape and substantial transaction volumes.

The market's sophistication becomes evident when examining agent connectivity and professionalism—all 3,982 licensed agents maintain email addresses, indicating a tech-savvy professional community well-equipped to handle modern real estate transactions. This level of digital engagement reflects the county's proximity to Chicago's business districts and the increasingly complex needs of buyers relocating from urban centers to suburban communities like Highland Park, Vernon Hills, and Grayslake.

Major Lake County, Illinois Real Estate Markets

The county's real estate landscape divides into distinct regional markets, each with unique characteristics and price points. The eastern lakefront communities, including Lake Forest, Highland Park, and Winnetka, command premium prices due to their proximity to Lake Michigan and established wealth, while western communities like Round Lake Beach and Grayslake offer more affordable options for families seeking quality schools and suburban amenities. Waukegan, the county seat, provides urban-style living with ongoing revitalization efforts attracting both investors and first-time homebuyers.

Central Lake County communities such as Vernon Hills, Libertyville, and Mundelein represent the sweet spot for many buyers, offering excellent school districts, corporate headquarters proximity, and diverse housing stock ranging from starter homes to executive properties. These areas have experienced particularly strong growth as remote work arrangements allow professionals to prioritize space and community amenities over commute times to downtown Chicago.

Market Dynamics and Geographic Complexity

Lake County's real estate market operates with surprising independence from Chicago's urban core, driven by local employment hubs including Abbott Laboratories, Baxter International, and numerous corporate campuses along the I-94 corridor. This economic diversity creates multiple micro-markets within the county, where agents must understand everything from lakefront luxury properties exceeding $2 million to affordable condominiums and townhomes serving young professionals and retirees.

The market's complexity increases due to varying municipal regulations, school district boundaries, and transportation access points that significantly impact property values. Agents frequently navigate between communities where identical homes might vary by $100,000 based solely on school district assignments or proximity to Metra stations, requiring deep local knowledge and extensive professional networks to serve clients effectively.

Why Businesses Need Lake County, Illinois Agent Contact Data

Real estate service providers, from mortgage lenders to home improvement contractors, find Lake County's agent database invaluable due to the market's high transaction velocity and premium service expectations. With nearly 4,000 agents actively working in a geographically compact area, businesses can efficiently reach decision-makers who influence significant residential and commercial real estate investments throughout the region.

The universal email connectivity among Lake County agents enables targeted marketing campaigns for financial services, technology platforms, and professional development opportunities that align with the market's sophisticated clientele. Companies launching new real estate technologies or services often pilot programs in markets like Lake County, where agent professionalism and client expectations drive rapid adoption of tools that improve transaction efficiency and customer experience.

Current Property Listings

As of 2/17/2026, Mark Rantis has 6 properties for sale in Barrington and surrounding areas.

$229,900

Listed 2026-01-15

809 E 40th St Unit 4-4
Chicago, IL  60653

Beds: 2.0
Baths: 2.0
Sq Ft: 1,300
Condos Map
View Full Details

$419,900

Listed 2026-01-08

7131 N Caldwell Ave Apt 4S
Chicago, IL  60646

Beds: 2.0
Baths: 2.0
Sq Ft: 1,900
Condos Map
View Full Details

$174,900

Listed 2026-01-19

850 S Lorraine Rd Apt 3B
Wheaton, IL  60189

Beds: 1.0
Baths: 1.0
Sq Ft: 840
Condos Map
View Full Details

$249,900

Listed 2026-02-03


Bloomingdale, IL  60108

Beds: 2.0
Baths: 2.0
Sq Ft: 1,115
Condos Map
View Full Details

$214,900

Listed 2025-10-03

1225 N King Dr NE
South Holland, IL  60473

Beds: 3.0
Baths: 1.5
Sq Ft: 8,125
Single Family Map
View Full Details

$120,000

Listed 2026-01-09


Bensenville, IL  60106

Beds: 3.0
Baths: 1.0
Sq Ft: 1,125
Single Family Map
View Full Details

Current Property Rentals

Mark Rantis currently has no rental properties available in Barrington and surrounding areas. Check back later.