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Diane Coyle

Diane Coyle
Real Estate Agent (Managing Broker)
Downers Grove IL

Managing Broker (IL: 471005708)

43 years experience

REALTOR® 7 Active Listings Serves Dupage County, IL
View on Realtor.com

Contact Information

Brokerage
Platinum Partners Realtors

Office Website
Office Address
5200 Main St
Downers Grove, IL  60515
(Dupage County)
Office Phone
630-435-3500
Office Fax
Mobile
630-988-2022
Email
dian*@*********.com
Show Email for $5

Service Areas

Glen Ellyn: IL Downers Grove: IL Lombard: IL Villa Park: IL Oakbrook Terrace: IL Wheaton: IL Winfield: IL Naperville: IL Bolingbrook: IL Aurora: IL Willowbrook: IL Clarendon Hills: IL Woodridge: IL Hinsdale: IL Westmont: IL Westchester: IL Oak Brook: IL Burr Ridge: IL Darien: IL Indian Head Park: IL Lisle: IL Plainfield: IL Oswego: IL Bristol: IL Montgomery: IL Romeoville: IL Warrenville: IL Millbrook: IL Yorkville: IL Plattville: IL

About Diane Coyle

With a real estate career that began in 1983, this seasoned professional is a licensed Broker and Realtor® who co-founded Platinum Partners Realtors. As a dedicated member of the National Association of Realtors (NAR), the Illinois Association of Realtors (IAR), and the Mainstreet Organization of Realtors, they are well-versed in the intricacies of the industry. Additionally, they are affiliated with the Northern Illinois Multiple Listing Service (MLS).

Academically, they hold a Bachelor’s Degree from Western Illinois University, graduating with high honors. Their professional qualifications include certifications as a Negotiation Consultant (CNC) and in Relocation Services, alongside completing the Floyd Wickman sales program. Their achievements in real estate are noteworthy, having been inducted into the Re/Max Hall of Fame and consistently recognized as a top producer in the Downers Grove market, as well as being a member of the Platinum Club.

Beyond their professional endeavors, they actively participate in the Downers Grove Chamber of Commerce and Moose International, demonstrating a commitment to community engagement and business development.

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

$810,715
Avg. Listing Price
From Diane's portfolio
3.7 / 3.1
Avg. Beds/Baths
Typical property size
2,679 sf
Avg. Square Footage
Interior living space
1402
Active Listings
Current inventory

DuPage County, Illinois stands as one of the most robust and sophisticated real estate markets in the Chicago metropolitan area, with 7,630 actively licensed agents working across its diverse communities. This substantial agent population reflects the county's economic vitality and the complexity of its housing landscape, which spans from luxury suburban enclaves like Hinsdale and Oak Brook to rapidly growing communities such as Naperville and Wheaton.

The county's real estate market benefits from its strategic position as both a major employment hub and a desirable residential destination. With all 7,630 licensed agents maintaining active email contacts, the market demonstrates a high level of digital engagement and professional connectivity that facilitates efficient transactions across price points ranging from starter condos in Glen Ellyn to multi-million dollar estates in Burr Ridge.

Major Dupage County, Illinois Real Estate Markets

Naperville dominates as the county's largest real estate market, consistently ranking among Illinois' most desirable cities for families and professionals. The city's excellent school districts and corporate headquarters presence drive sustained demand, while nearby Downers Grove and Lombard offer more affordable alternatives with similar amenities. Aurora's western sections within DuPage County represent emerging growth areas, particularly appealing to first-time homebuyers seeking value.

The eastern communities of Elmhurst, Villa Park, and Addison benefit from exceptional transportation access to downtown Chicago, creating distinct micro-markets with varying price dynamics. Westmont and Clarendon Hills have emerged as hidden gems for buyers seeking walkable downtown areas, while Lisle attracts technology professionals due to its proximity to the Illinois Technology and Research Corridor.

Market Dynamics and Geographic Complexity

DuPage County's real estate market exhibits remarkable resilience due to its economic diversification, with major employers in healthcare, technology, and finance providing stable demand across multiple price segments. The county's 28 municipalities each maintain distinct character and pricing structures, from the historic charm of Glen Ellyn to the modern corporate environment of Oak Brook, requiring agents to develop specialized local expertise.

Surprisingly, the county's western edge communities like Carol Stream and Glendale Heights have experienced some of the strongest appreciation rates in recent years, as buyers discover excellent value propositions. The market also shows increasing interest in townhome and condominium developments, particularly in Wheaton and Wood Dale, as demographics shift toward lower-maintenance living options.

Why Businesses Need Dupage County, Illinois Agent Contact Data

Real estate service providers, from mortgage lenders to home improvement contractors, require comprehensive agent contact databases to effectively reach DuPage County's extensive network of 7,630 professionals. The county's high transaction volume and affluent client base make it particularly attractive for luxury service providers, property technology companies, and financial services firms seeking to establish meaningful business relationships with active agents.

Marketing professionals and B2B service companies benefit significantly from having verified email contacts for all licensed agents, enabling targeted campaigns for continuing education, professional services, and real estate technology solutions. Given the county's sophisticated market dynamics and high average transaction values, businesses that successfully connect with these agents often see substantial return on investment through sustained professional partnerships.

Current Property Listings

As of 2/17/2026, Diane Coyle has 7 properties for sale in Downers Grove and surrounding areas.

$314,900

Listed 2025-10-30

13810 S Magnolia Dr
Plainfield, IL  60544

Beds: 2.0
Baths: 2.0
Sq Ft: 1,435
Townhomes Map
View Full Details

$399,900

Listed 2026-02-12

1121 River Bend Ln
Lisle, IL  60532

Beds: 2.0
Baths: 2.5
Sq Ft: 2,158
Townhomes Map
View Full Details

$139,900

Listed 2026-01-08

1510 N Rock Run Dr Apt 2A
Crest Hill, IL  60403

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

$450,000

Listed 2026-01-09

6385 Winstead Ct
Lisle, IL  60532

Beds: 3.0
Baths: 2.5
Sq Ft: 1,741
Lot: 4,391 sf
Single Family Map
View Full Details

$260,000

Listed 2025-10-30

29 N Roslyn Rd
Westmont, IL  60559

Beds: 3.0
Baths: 1.0
Sq Ft: 864
Single Family Map
View Full Details

$450,000

Listed 2026-01-08

6314 Fairview Ave
Downers Grove, IL  60516

Beds: 2.0
Baths: 2.5
Sq Ft: 1,665
Townhomes Map
View Full Details

$310,000

Listed 2025-12-03


Plainfield, IL  60544

Beds: 3.0
Baths: 2.0
Sq Ft: 1,693
Townhomes Map
View Full Details

Current Property Rentals

Diane Coyle currently has no rental properties available in Downers Grove and surrounding areas. Check back later.