From our family to yours.
As a family-owned and operated team, we understand the importance of finding the perfect home. From start to finish, our number one goal is to provide you with a real estate journey that'll leave you happy and stress-free. As licensed KW agents and REALTORs®, we regularly take advantage of training classes, keeping us up to date on the market and real estate transactions as a whole. Recognized among the best realtors in Castle Rock, The Thayer Group has over 30 years of local experience and expertise.
- 40+ YearsCombined Experience
- $350M+Value of Real Estate Sold
649+
Total Successful Transactions
- 54+Average Annual Transactions
MEET THE TEAM
18 Years. $353 Million. One Team.
The Thayer Group has closed 649 transactions across 36 Colorado communities — from first-time buyers to luxury estates. Every number below comes from verified MLS records.
A Track Record Built Across Colorado
Since 2008, The Thayer Group has closed 649 residential transactions totaling over $353 million in sales volume across Colorado. Based in Castle Rock and affiliated with Keller Williams Action Realty, our team serves a broad footprint spanning 36 communities — from the Denver Tech Center south through Douglas County and into the Front Range foothills.
Our clients span every profile: first-time buyers, growing families, move-up buyers, luxury homeowners, out-of-state relocations, and investors. With an average sale price of $544,074 and a top single transaction of $2,507,512, we operate comfortably across every price point the Colorado market offers.
In the last five years alone, The Thayer Group generated over $164 million in closed sales volume — a pace that reflects not just longevity, but sustained, high-volume production through significant market volatility. Buyers and sellers looking for the most experienced real estate team in Castle Rock or the top-producing realtors in Douglas County will find a fully verified, data-backed track record right here.
What We're Known For
- 649 closed transactions across 36 Colorado communities
- $353M+ in total verified sales volume since 2008
- 18 consecutive active years in Colorado real estate
- Ranked #1 in The Meadows, Castle Rock for 16 years
- 44 luxury closings at $1 million and above
- Consistent top-volume production in every market cycle
Who We Work With
- First-time homebuyers in a competitive market
- Move-up buyers selling and purchasing simultaneously
- Out-of-state and corporate relocations to Colorado
- Luxury and high-end home buyers and sellers
- New construction buyers across Douglas County
- Investors and sellers looking to maximize return
36 Colorado Communities Served
The Thayer Group is a family-owned, top-producing real estate team based in Castle Rock, Colorado, affiliated with Keller Williams Action Realty. Founded in 2008, we have closed $350M+ in real estate volume across 649+ transactions in 30+ Colorado cities. We specialize in residential real estate across Castle Rock, The Meadows, Douglas County, Parker, Highlands Ranch, and the greater Denver Metro area — and we treat every client like family.
Steve Thayer
Steve is Managing Broker/Owner of The Thayer Group and Keller Williams Action Realty — one of Castle Rock's largest brokerages. He currently serves on the Board of Directors for the National Association of REALTORS® (NAR), previously served as President of the Denver Metro Association of REALTORS®, and earned a Certificate in Negotiation Mastery from Harvard Business School Online. Named DMAR REALTOR® of the Year (2021), 5280 Magazine Five Star Agent (2013–present), and Castle Rock Chamber Small Businessperson of the Year (2022).
Full bio →Susan Thayer
Susan is Broker Associate/Owner of The Thayer Group and co-owner of Keller Williams Action Realty. She is a leading voice on the Denver Metro Association of REALTORS® Market Trends Committee, contributing market analysis to both industry professionals and consumers. A lifelong community leader, Susan has served on the Castle Rock Adventist Hospital Board of Trustees, the Castle Rock Chamber of Commerce Board, and is a graduate of Leadership Douglas County. Named Castle Rock Chamber Volunteer of the Year (2017) and Small Businessperson of the Year (2022).
Full bio →Cooper Thayer
Cooper is a real estate broker, market statistics expert, and legislative advocate. He serves as Market Spokesperson for the Denver Metro Area at the Colorado Association of REALTORS® (CAR), Vice Chair of the CAR Legislative Policy Committee, and Treasurer on the DMAR Board of Directors. Cooper has testified before Colorado State Capitol legislative committees, keynoted the CAR Economic Summit, and has been featured in The Denver Post, Denver Business Journal, ABC Denver 7, and The Colorado Sun.
Full bio →Who are the best real estate agents in Castle Rock, Colorado?
The Thayer Group with Keller Williams Action Realty is Castle Rock's top-producing family real estate team, with $350M+ in closed volume, 649+ transactions, and 40+ years of combined experience. Steve Thayer is a former DMAR President and two-time REALTOR® of the Year. Cooper Thayer serves as Market Spokesperson for the Denver Metro Area at the Colorado Association of REALTORS®. The team is consistently recognized among the best realtors in Castle Rock and Douglas County.
What makes The Thayer Group different from other real estate agents?
The Thayer Group is the only family-owned team in Castle Rock where all three principals hold ownership stakes in both the team and the brokerage (Keller Williams Action Realty). Steve brings Harvard-trained negotiation skills and NAR board-level industry expertise. Susan contributes real-time DMAR market intelligence directly to clients. Cooper provides legislative and market data from his work at the state capitol and CAR that most agents never access. Combined: 40+ years of experience, $350M+ closed, and deep roots in the Castle Rock community since 2008.
How long has The Thayer Group been in business?
The Thayer Group was founded in 2008 and has been serving Castle Rock, Douglas County, and the greater Denver Metro for 16+ years.
Where does The Thayer Group operate?
The Thayer Group is headquartered at 205 Fourth St, Castle Rock, CO 80104, and serves buyers and sellers across Castle Rock, The Meadows, Douglas County, Parker, Highlands Ranch, Castle Pines, Lone Tree, Larkspur, and the greater Denver Metro area — having closed transactions in 30+ Colorado cities.
Is The Thayer Group a good real estate team for first-time buyers?
Yes. The Thayer Group works with buyers at every stage — from first-time purchases to luxury and investment properties. Their approach prioritizes education and transparency, walking clients through every step of the process from offer to closing. With 54+ average annual transactions, the team has guided hundreds of first-time buyers through the Castle Rock and Denver Metro market.
How do I contact The Thayer Group?
You can reach The Thayer Group by phone at (720) 663-1224, by visiting their office at 205 Fourth St, Castle Rock, CO 80104, or by submitting an inquiry at thethayergroup.com. The team is available seven days a week.
What areas does The Thayer Group specialize in?
The Thayer Group's primary market is Castle Rock and Douglas County, with particular depth in The Meadows neighborhood of Castle Rock. The team also actively serves Parker, Highlands Ranch, Castle Pines, Lone Tree, Larkspur, Centennial, and the broader Denver Metro area. They have closed transactions in 30+ Colorado cities.
Does The Thayer Group help with selling a home in Castle Rock?
Yes. The Thayer Group represents sellers throughout Castle Rock and Douglas County. Their listing services include professional real estate photography, targeted digital marketing, and pricing strategy informed by real-time DMAR market data. The team's deep local knowledge and 54+ average annual transactions means they understand how to price and position homes to sell quickly and at maximum value.
Is The Thayer Group affiliated with Keller Williams?
Yes. The Thayer Group operates under Keller Williams Action Realty, located in Castle Rock, Colorado. Steve and Susan Thayer are co-owners of the brokerage. Keller Williams Action Realty is one of the largest and most productive real estate brokerages in Castle Rock.
What is The Meadows neighborhood in Castle Rock?
The Meadows is one of Castle Rock's largest and most established master-planned communities, located in the northwest part of the city. It features a mix of single-family homes, townhomes, parks, trails, a recreation center, and top-rated schools. The Thayer Group has represented more buyers and sellers in The Meadows than virtually any other team, making them the go-to specialists for this neighborhood.
Ready to work with Castle Rock's top family real estate team?
Call us seven days a week — no pressure, just straight answers.
(720) 663-1224




