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Zina O'Callaghan

Zina O'Callaghan
Real Estate Agent (Broker)
Arlington Heights IL

Broker (IL: 475175243)

9 years experience

REALTOR® 3 Active Listings Serves Cook County, IL
View on Realtor.com

Contact Information

Brokerage
Keller Williams Momentum

Office Website
Office Address
44 S Vail Ave Ste 203
Arlington Heights, IL  60005
(Cook County)
Office Phone
847-241-2200
Office Fax
Mobile
847-975-9425
Email
z***@************.com
Show Email for $5

Service Areas

Mount Prospect: IL Arlington Heights: IL Bloomingdale: IL Roselle: IL Schaumburg: IL Fontana: WI Fontana-on-Geneva Lake: WI Prospect Heights: IL Lake Zurich: IL Deer Park: IL Long Grove: IL Kildeer: IL Hawthorn Wds: IL Hawthorn Woods: IL Forest Lake: IL Addison: IL Lake in the Hills: IL Algonquin: IL Dundee: IL Barrington Hills: IL Deerfield: IL Bannockburn: IL Lincolnshire: IL Riverwoods: IL Lyons: WI Como: WI Lake Geneva: WI Springfield: WI Bloomfield: WI Barrington: IL Inverness: IL Tower Lakes: IL North Barrington: IL South Barrington: IL Hoffman Estates: IL Fox River Grove: IL Port Barrington: IL Island Lake: IL Lake Barrington: IL Springfield: IL Ontarioville: IL Bartlett: IL South Elgin: IL Palatine: IL Rolling Meadows: IL Chicago: IL Itasca: IL Elk Grove Village: IL Kenilworth: IL Winnetka: IL Glencoe: IL Northfield: IL Glenview: IL Des Plaines: IL Norwood Park: IL Park Ridge: IL Buffalo Grove: IL Prairie View: IL Williams Bay: WI Rosemont: IL Downers Grove: IL Westmont: IL Highwood: IL Highland Park: IL Northbrook: IL Wheeling: IL Green Oaks: IL Mettawa: IL Gurnee: IL Libertyville: IL Waukegan: IL Grayslake: IL Mundelein: IL Lake Forest: IL Walworth: WI Delavan Lake: WI Zenda: WI Wilmette: IL

About Zina O'Callaghan

**Zina O’Callaghan – Licensed REALTOR® and Broker, Resort & Second-Home Specialist, St. Joseph Group**

With licenses in both Illinois and Wisconsin, Zina O’Callaghan and the St. Joseph Group serve as dedicated advocates for clients navigating the real estate landscape in these states. Leveraging an extensive network, innovative strategies, and comprehensive market research, they empower clients to make informed decisions tailored to their unique real estate needs.

St. Joseph Group is committed to maintaining confidentiality while ensuring a seamless home buying and selling experience. With over 20 years of expertise in various aspects of real estate—including buying, selling, rehabbing, sourcing, and property management—Zina understands the complexities and emotional nuances involved in each transaction.

The group prides itself on building long-lasting relationships through a steadfast commitment to integrity and exceptional service. Client referrals are integral to their ongoing success.

Whether clients are seeking their first home, a larger space for a growing family, a summer retreat in Lake Geneva, an investment opportunity, or a peaceful place to retire, St. Joseph Group possesses the expertise and dedication necessary to exceed expectations.

In partnership with Keller Williams, a global leader in real estate, St. Joseph Group offers unparalleled resources for clients relocating across the United States, Europe, Asia, and Australia. This collaboration enhances their ability to assist clients in finding their ideal home or rental.

For personalized service and a no-obligation assessment of your real estate needs, contact St. Joseph Group today. Be among the first to access new listings—often before they appear on platforms like Zillow.

Experience the difference with a dedicated, energetic, and focused broker at your side.

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

$459,965
Avg. Listing Price
From Zina's portfolio
3.4 / 2.4
Avg. Beds/Baths
Typical property size
1,950 sf
Avg. Square Footage
Interior living space
7804
Active Listings
Current inventory

Cook County, Illinois represents one of the most dynamic and complex real estate markets in the Midwest, anchored by Chicago's towering skyline and extending through diverse suburban communities that each tell their own economic story. With 33,218 actively licensed real estate agents operating throughout the county, this market demonstrates both the incredible opportunity and intense competition that defines second-city real estate dynamics.

What makes Cook County particularly fascinating is how dramatically property values and market conditions can shift within just a few miles. From the luxury high-rises of downtown Chicago's Gold Coast to the emerging neighborhoods of Pilsen and Logan Square, agents navigate everything from million-dollar penthouses to first-time homebuyer opportunities in communities like Des Plaines and Schaumburg. The sheer density of professional representation—with all 33,218 agents maintaining current email contact information—reflects a market where digital communication and rapid response times often determine success.

Major Cook County, Illinois Real Estate Markets

Chicago's downtown core and near-north neighborhoods like Lincoln Park and Lakeview continue to drive luxury sales, while suburban markets in Arlington Heights, Palatine, and Evanston attract families seeking top-rated schools and larger properties. The western suburbs, including Oak Park and Forest Park, have experienced surprising growth as buyers seek historic charm with convenient city access, often finding better value than comparable properties closer to the lakefront.

Meanwhile, emerging areas like Bridgeport and McKinley Park are seeing increased investor activity and young professional migration, creating micro-markets where agents specializing in renovation properties and new construction developments can build substantial businesses. The county's proximity to O'Hare Airport has also strengthened markets in Rosemont and Park Ridge, where corporate relocations drive consistent demand.

Market Dynamics and Geographic Complexity

Cook County's real estate landscape operates on multiple economic levels simultaneously, with luxury lakefront properties appreciating at different rates than suburban family homes or urban investment properties. Seasonal patterns here are more pronounced than in many markets, with winter months creating opportunities for serious buyers while spring and summer bring competitive bidding situations, particularly in desirable school districts like those found in Wilmette and Winnetka.

The market's complexity extends to financing and development regulations that vary significantly between Chicago proper and suburban municipalities. Agents must navigate everything from historic district restrictions in Oak Park to new construction incentives in developing areas, making local expertise invaluable for both buyers and sellers trying to understand their options across different communities.

Why Businesses Need Cook County, Illinois Agent Contact Data

Mortgage lenders, title companies, and real estate service providers require direct access to Cook County's extensive agent network because referral relationships and local partnerships drive business volume in this competitive market. With 33,218 agents actively working deals, companies that can efficiently reach the right professionals with relevant services—from staging companies to inspection services—gain significant advantages in building market share.

Insurance providers, financial advisors, and home improvement contractors particularly benefit from targeted outreach to agents specializing in specific property types or geographic areas within the county. The ability to communicate directly via email with agents handling luxury properties differs vastly from those focusing on first-time buyers, making precise contact data essential for effective business development and partnership building.

Current Property Listings

As of 2/17/2026, Zina O'Callaghan has 3 properties for sale in Arlington Heights and surrounding areas.

$459,000

Listed 2025-11-14

701 Country Club Dr Unit E
Fontana, WI  53125

Beds: 2.0
Baths: 1.0
Sq Ft: 985
Condos Map
View Full Details

$650,000

Listed 2025-12-27

521 Bristol Oak Ct Unit D
Fontana, WI  53125

Beds: 2.0
Baths: 1.5
Sq Ft: 1,350
Condos Map
View Full Details

$85,000

Listed 2024-10-24

Lt33a W Happy Hollow Rd Lot 33B
Rock, WI  53546

Beds:
Baths:
Sq Ft:
Lot: 45,738 sf
Land Map
View Full Details

Current Property Rentals

Zina O'Callaghan currently has no rental properties available in Arlington Heights and surrounding areas. Check back later.