Franz Rosenberger

With over 22 years of experience, I am a Realtor and co-owner of Coldwell Banker Islands Realty where I specialize in Lake Champlain lakefront properties. As a top-performing real estate agent in Grand Isle County, Vermont, I help clients buy and sell lakefront homes, vacation properties, and second homes throughout the Champlain Islands. I have been ranked the #1 Coldwell Banker agent in Vermont by sales volume 3 of the last 5 years and recognized among the top 1% of Coldwell Banker [...]

With over 22 years of experience, I am a Realtor and co-owner of Coldwell Banker Islands Realty where I specialize in Lake Champlain lakefront properties. As a top-performing real estate agent in Grand Isle County, Vermont, I help clients buy and sell lakefront homes, vacation properties, and second homes throughout the Champlain Islands. I have been ranked the #1 Coldwell Banker agent in Vermont by sales volume 3 of the last 5 years and recognized among the top 1% of Coldwell Banker agents worldwide. I work closely with clients to guide pricing, marketing, and negotiations, backed by a solid understanding of shoreline regulations, seasonal demand, and local market trends.

After relocating from Isle of Palms South Carolina to Vermont’s scenic Champlain Islands in 2000, my wife Anne and I brought decades of business and customer service experience with us from owning a successful restaurant and outfitting business in South Carolina. In 2001, we purchased and began restoring an 1860 farmhouse and lakefront cottage in Grand Isle on Lake Champlain, where we still live today.

Real estate is a family business for us. Our daughter Alex, a graduate of the University of Vermont, is a licensed Realtor at Coldwell Banker Islands Realty specializing in marketing, social media, video production, and FAA-certified drone photography. Anne focuses on real estate photography, staging, and buyer representation, helping us deliver a full-service client experience.

As longtime Vermont residents and waterfront homeowners, we understand the unique aspects of buying and selling lakefront, island, vacation, and country properties throughout Northwestern Vermont. We also own 2 short term rental properties in  Grand Isle and Stowe, giving us firsthand knowledge of vacation and investment real estate.

Whether you are buying or selling waterfront property, a vacation home, or a country estate in the Champlain Islands or greater Lake Champlain region, we provide experienced local knowledge, strategic marketing, and personalized service to help you achieve your real estate goals.

Awards:

• #1 Coldwell Banker Sales Associate in Vermont 2022, 2020, 2008
• #2 Coldwell Banker Sales Associate in Vermont 2025, 2021, 2017 
• International Presidents Premier Award 2025 Top 1% of CB Agents Worldwide
• International Presidents Elite Award 2020-2024 Top 2% of CB Agents Worldwide 
• #1 Agent in Grand Isle County 2020-2025, 2014-2018, 2012 (NEREN MLS)
• Real Trends Top Ranked Agents in Vermont 2021-2025
• Specialty in Lakeshore and Island Properties
• Member of the National Association of REALTORS®
• Member of the Vermont Association of REALTORS®

Featured Testimonials:

"We had an outstanding experience working with Franz, Anne and Alex. They helped us get our house fully prepared for the market, created amazing videos, and took beautiful photos that really showcased our home. Throughout the process, they expertly guided us through inspections and made what could have been a stressful experience feel manageable. Coordinating two closings in one day is no small task, but they handled everything seamlessly. We truly appreciated their professionalism, attention to detail, and dedication from start to finish. Highly recommend!" - Tracy P.

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"We had an incredible experience working with Franz. From the very beginning, he truly understood what we were looking for and didn’t just send listings—he actively kept an eye out for the right opportunity.

Thanks to his strong relationships and local knowledge, he connected us with a property that wasn’t even on the market yet—an old farmhouse right on Lake Champlain that aligned really well with what we were hoping to find. It’s the kind of opportunity we never would have found on our own.

Since we didn’t have any connections in the area, we also really appreciated Franz’s referrals throughout the closing process. Every recommendation he made was reliable and helped everything come together smoothly.

He made the entire experience seamless, communicated clearly, and was a trusted advisor every step of the way. We’re so grateful for his dedication and would highly recommend him to anyone looking for a home—especially if you want someone who goes above and beyond." - Karen O.