About Sean

Hi, I’m Sean.

A Colorado native, former collegiate athlete and real estate broker with Serhant Colorado LLC. Helping you find your place here starts with getting to know you.

Colorado has always been home. I grew up here, and now my wife and I are raising our family here. I know how different life can feel from one community to the next, from Denver’s established neighborhoods to the foothills and properties with room to spread out.

My job is to help you find what fits your life. Whether you are buying, selling, moving across town or coming from out of state, I bring local perspective, honest conversations and a plan built around what matters to you.

Book a call to get acquainted
Sean Flanagan with his family in the Colorado mountains
Colorado is home for our family, too.
At home in Colorado

Our roots are here

My wife and I are both Colorado natives. We grew up here and have raised our family here, and I want to help others find the same quality of life that Colorado has offered us.

This chapter of your life should feel exciting and empowering, and I am here to give you the clarity and resources to make it happen.

Recent sales

Homes I’ve helped buy and sell

Recent closings across Castle Pines, Parker, Littleton, Aurora, Westminster and the rest of the Denver metro.

  • Sold

    Castle Pines

    $960,000

    5 bd · 4 ba · 3,877 sq ft

  • Sold

    Westminster

    $620,000

    4 bd · 4 ba · 2,443 sq ft

  • Sold

    Denver

    $773,000

    4 bd · 4 ba · 3,287 sq ft

  • Sold

    Littleton

    $1,170,000

    4 bd · 3 ba · 3,749 sq ft

  • Sold

    Castle Rock

    $781,000

    5 bd · 5 ba · 4,187 sq ft

  • Sold

    Parker

    $545,000

    4 bd · 3 ba · 2,237 sq ft

  • Sold

    Englewood

    $320,000

    3 bd · 2 ba · 1,352 sq ft

  • Sold

    Highlands Ranch

    $535,000

    2 bd · 3 ba · 1,813 sq ft

  • Sold

    Centennial

    $525,000

    4 bd · 2 ba · 1,858 sq ft

  • Sold

    Aurora

    $715,000

    5 bd · 3 ba · 3,794 sq ft

  • Sold

    Parker

    $1,347,500

    5 bd · 5 ba · 5,672 sq ft

  • Sold

    Thornton

    $355,000

    2 bd · 2 ba · 2,632 sq ft

  • Sold

    Centennial

    $830,000

    4 bd · 3 ba · 3,514 sq ft

  • Sold

    Parker

    $775,000

    4 bd · 5 ba · 4,365 sq ft

  • Sold

    Arvada

    $300,000

    2 bd · 1 ba · 800 sq ft

Sold homes from 2026, from public sales records as shown on Sean’s Zillow agent profile. Includes homes where Sean represented the buyer or the seller.

Client reviews

What clients say

5.0 average from 10 client reviews on Zillow

Read all reviews on Zillow
“He connected us with lenders, title companies, home warranty providers, and inspectors, and he consistently stepped in to keep everyone on track and hitting deadlines.”
Zillow reviewerBought a home, 2026
“From day one, he was thorough, thoughtful, and incredibly detail-oriented. Nothing slipped through the cracks. Ever.”
Dane L.Sold and bought in Aurora, 2026
“He made sure he listened to us and our wants and needs, at the same time as he was guiding us with all of his knowledge and what he thought would be best for us!”
Zillow reviewerSold and bought in Littleton, 2025
“Sean was absolutely amazing throughout the whole process of buying our home. He was very pleasant to work with and always available to us.”
Zillow reviewerBought in Aurora, 2025
“He was friendly and very available and responded to our questions and concerns promptly.”
Brett S.Bought in Denver, 2025
“Sean took the time to understand our needs and preferences, and his expertise of the local market was invaluable.”
Zillow reviewerRelocated from Delaware, bought in Arvada, 2025
“So responsive, knowledgeable, professional, friendly, and available at all hours to help us find and close on a house in less than 2 weeks time!”
Zillow reviewerBought in Broomfield, 2024
“He went above and beyond on helping us find our perfect home! He is very knowledgeable around the Denver area and is so easy to work with!”
Madison D.Bought in Wheat Ridge, 2024
“Sean’s input was always informative and transparent at every step of the buying process.”
Zillow reviewerFirst home, 2024
“Sean did an amazing job helping us find a home and navigating the home purchase smoothly.”
Taylor H.Bought in Dacono, 2024
A local’s perspective

Knowing the place makes the difference

I am a Denver native and have lived here my entire life. I have watched this city and the surrounding communities grow and change firsthand, and I have experienced Denver in every season and every stage, from quiet suburbs to growing neighborhoods to areas closer to the foothills. I know what life here is really like beyond what you see online.

What most people do not realize is how different life can feel depending on where you land. Neighborhoods only a few miles apart can have completely different schools, traffic patterns, weather and sense of community. Even how long the snow sticks around can change from one street to the next.

That is why I created my community guides along with the videos I share on Instagram. My goal is to give you honest insight so you can make a confident decision before a big move. Whether you are after city living, a family-focused suburb or a home closer to the foothills, I would be honored to help you find the right place to call home.

Explore the Denver suburbs guide
Sean Flanagan with Ryan Serhant
Brokered by Serhant Colorado LLC

Personal guidance with a broader perspective

My relationship with you comes first. Let’s talk about what you need from your next move and put a plan around it.

Tell me about your move