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Courtney Marsh

Courtney Marsh
Real Estate Agent (Managing Broker)
O Fallon IL

Managing Broker (IL: 471020000)

8 years experience

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

Contact Information

Brokerage
Red Door Realty Group Inc
Office Address
1001 S Lincoln
O Fallon, IL  62269
(Saint Clair County)
Office Phone
618-632-9448
Office Fax
Mobile
618-401-9765
Email
courtney@reddoorrg.com

Service Areas

Roxana: IL Holiday Shores: IL South Roxana: IL Fort Russell: IL Moro: IL Glen Carbon: IL Pontoon Beach: IL Edwardsville: IL Maryville: IL O'Fallon: IL Fairview Heights: IL Smithton: IL Belleville: IL Freeburg: IL Rentchler: IL Shiloh: IL Swansea: IL Grantfork: IL Highland: IL St. Jacob: IL Pierron: IL Lebanon: IL Scott AFB: IL Mascoutah: IL Fayetteville: IL Sugar Creek: IL Summerfield: IL Trenton: IL Troy: IL

About Courtney Marsh

As a second-generation REALTOR® and business owner, Courtney has deep roots in the real estate industry, influenced by a mother who dedicated her career to this field. Licensed since 2010, Courtney has a genuine passion for real estate, which led to the establishment of Red Door Realty Group in 2019. In 2022, [he/she/they] expanded [his/her/their] vision by founding The Marsh Team, operating under the Red Door Realty Group umbrella.

A ninth-generation resident of St. Clair County and a sixth-generation member of the O’Fallon community, Courtney is also a devoted parent of five. This personal experience equips [him/her/them] with a unique understanding of the demands faced by busy families in transition. As a full-time real estate agent, [he/she/they] is committed to staying abreast of market trends and developments, ensuring clients receive informed guidance. Courtney takes pride in [his/her/their] community involvement and remains dedicated to a career that [he/she/they] truly loves.

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

$271,287
Avg. Listing Price
From Courtney's portfolio
3.2 / 2.3
Avg. Beds/Baths
Typical property size
1,985 sf
Avg. Square Footage
Interior living space
1022
Active Listings
Current inventory

Mortgage lenders, title companies, PropTech startups, real estate recruiters, insurance agents, and continuing education providers all need direct access to Saint Clair County's actively licensed real estate professionals. Our verified email list of 565 Saint Clair County agents gives you the precise targeting power to reach decision-makers who control billions in annual transaction volume across Belleville, O'Fallon, Fairview Heights, and surrounding communities.

Unlike generic statewide databases that waste your budget on irrelevant contacts, this county-specific list ensures every email reaches agents working your exact geographic market. Whether you're launching a new mortgage product, recruiting top performers, or promoting continuing education courses, having verified contact information for every licensed agent in Saint Clair County eliminates the guesswork from your outreach campaigns.

Why Buy a Saint Clair County Real Estate Agent Email List From Dr Bill

Our Saint Clair County agent data comes directly from Illinois state licensing board records, not scraped websites or outdated directories that other vendors rely on. Each of the 565 email addresses undergoes monthly verification to maintain our industry-leading 96% deliverability guarantee, ensuring your campaigns reach real inboxes instead of bouncing back as undeliverable messages.

While competitors sell stale data that may be months or years old, we update this list monthly to capture new licenses, expired renewals, and contact changes. This commitment to data freshness means you're not wasting money sending emails to agents who moved firms or left the industry. Our rigorous verification process consistently outperforms cheap alternatives that promise thousands of contacts but deliver mostly dead email addresses.

How to Use This Saint Clair County Agent List

Deploy this verified agent data across multiple outreach channels for maximum impact. Cold-email platforms like Zap Contact (zapcontact.com) - Dr Bill's purpose-built system for purchased lists - handle the technical aspects of deliverability that mainstream platforms like Mailchimp or Constant Contact prohibit for purchased data. You can also use these verified addresses for direct mail campaigns, phone outreach, and LinkedIn connection strategies.

The list includes detailed licensing information that lets you segment between managing brokers and sales agents, allowing you to customize messaging based on seniority and decision-making authority. This granular targeting capability means loan officers can focus on high-volume producers while recruiters can identify newer agents ready for career moves.

Why Saint Clair County, Illinois Agent Data Matters

Saint Clair County's 565 licensed agents serve diverse markets from urban Belleville and East St. Louis to growing suburbs like O'Fallon, Fairview Heights, and Swansea. When you buy Saint Clair County real estate agent email list data, you're accessing professionals who understand local market nuances that statewide broadcasts simply cannot address effectively.

Dr Bill offers this Saint Clair County data at unprecedented granularity - state, county, city, and zip code levels - giving you targeting precision that no other vendor provides. This zip-code-level segmentation lets you craft hyperlocal campaigns that resonate with agents working specific neighborhoods, dramatically improving response rates compared to generic county-wide messaging.

Current Property Listings

As of 5/29/2026, Courtney Marsh has 7 properties for sale in O Fallon and surrounding areas.

$500,000

Listed 2026-03-06

530 W State St
O'Fallon, IL  62269

Beds:
Baths:
Sq Ft: 0
Lot: 84,506 sf
Land Map
View Full Details

$195,000

Listed 2026-04-09

113 Perrottet Dr
Mascoutah, IL  62258

Beds: 3.0
Baths: 1.0
Sq Ft: 1,036
Lot: 7,405 sf
Single Family Map
View Full Details

$110,000

Listed 2025-12-20

30 S 21st St
Belleville, IL  62226

Beds: 4.0
Baths: 1.0
Sq Ft: 849
Lot: 6,098 sf
Single Family Map
View Full Details

$100,000

Listed 2025-12-20

2218 W A St
Belleville, IL  62226

Beds: 3.0
Baths: 2.0
Sq Ft: 1,428
Lot: 6,534 sf
Single Family Map
View Full Details

$100,000

Listed 2025-12-20

16 S 21st St
Belleville, IL  62226

Beds: 3.0
Baths: 1.0
Sq Ft: 1,084
Lot: 6,098 sf
Single Family Map
View Full Details

$105,000

Listed 2025-12-20

2216 W A St
Belleville, IL  62226

Beds: 4.0
Baths: 2.0
Sq Ft: 1,519
Lot: 5,663 sf
Single Family Map
View Full Details

$125,000

Listed 2025-10-07

400 Avery Hl
Belleville, IL  62223

Beds: 2.0
Baths: 1.0
Sq Ft: 1,651
Lot: 20,038 sf
Single Family Map
View Full Details

Current Property Rentals

Courtney Marsh currently has no rental properties available in O Fallon and surrounding areas. Check back later.