Lisa Bertossa, Broker - Keystone Residential Group

Lisa Bertossa, Broker - Keystone Residential Group Keystone Residential Group is a real estate brokerage focusing on providing the best customer service during and beyond the transaction.

Keystone Residential Group is a real estate brokerage in St. Cloud, Florida focusing on providing the best customer service during and beyond the transaction. Founded by accomplished local real estate broker Lisa Bertossa, Keystone Residential Group will proudly represent and serve both residential and commercial clients with an emphasis on simple, secure, and transparent transactions.

“I am extremely proud to announce the opening of my brokerage, Keystone Residential Group, whose values will be rooted in the customer experience,” stated Bertossa. “I first started working in the real estate industry nearly 30 years ago and after taking a brief break following the Great Recession, I returned five years ago to find that the industry had radically changed. Customers were no longer the broker’s priority. Instead, high profits and heaps of transactions took precedence. This was deeply troubling to me and I knew I wanted to do things differently, which led to my desire to launch Keystone Residential Group. I welcome the local Florida community to Keystone where you will discover our heartfelt dedication to serving you.”

Keystone Residential Group will serve clients in Central Florida where Bertossa is a native and field expert. By being extremely well versed in the area’s neighborhoods, history, and prime investment areas, Bertossa’s brokerage will have a strong advantage over other Florida brokerages given her local expertise and personalized level of service.

“Along with our proficient knowledge of the Central Florida real estate market, Keystone Residential Group stands apart from competitors because of our core focus on the customer,” continued Bertossa. “At Keystone, our focus will not just be on completing transactions with clients but instead will be on building lifelong relationships and serving as a trusted advisor. Our level of service is even reflected in our company name — Keystone — something on which other things depend on for support.”

Keystone Residential Group will focus on providing clients with residential and commercial real estate support. These clients range from first-time homebuyers to those seeking to sell in order to down-size or up-size, as well as individuals looking for investment opportunities among vacant land and those constructing buildings from scratch. By depending on Keystone Residential Group for their buying, selling, and investment needs, clients will be confident in the firm’s abilities given the high level of customer service, quality property marketing, use of advanced technology, and transparency that the brokerage provides. Bertossa opens Keystone Residential group after most recently serving as a broker associate at Watson Realty Corp. where she earned multiple production awards and was consistently ranked among the company’s top 20 agents in the region. Highly dedicated to real estate, Bertossa has earned prestigious designations including Seller Representative Specialist (SRS), Accredited Buyer's Representative (ABR), Graduate Realtor Institute (GRI), and has been named one of Orlando's top 500 agents. For more information, visit keystoneresidential.org.

2705 Emerald Lake Ct, the waterfront condo on Fish Lake in Kissimmee, is under contract.Here's the honest picture of the...
08/11/2026

2705 Emerald Lake Ct, the waterfront condo on Fish Lake in Kissimmee, is under contract.

Here's the honest picture of the market right now: buyers have more room to breathe. Osceola County has around 4,400 homes for sale, up from a year ago, and the typical home is taking roughly two months to sell. Fewer buyers, more choices, less urgency.

So when a home goes under contract in this market, it isn't luck. It's honest pricing, real preparation, and marketing that actually reaches the people who are looking. That's the work, and it still works.

We still have inspections and financing to work through, but I'm happy for my sweet seller and hopeful about the road to closing.

If you've been waiting for a "hot market" to sell, the better question is whether your home is ready to stand out. Happy to take a look.

07/17/2026

Some closings are about more than handing over the keys.

Today, both the buyers and the seller were at the closing table, something you don’t see very often anymore.

My buyers are beginning a new chapter, moving to Central Florida to be closer to their daughter and son-in-law, who I had the privilege of helping purchase a home last year.

The seller was saying goodbye to the home she and her late husband built together, a place filled with years of memories. It was bittersweet, but she was ready for her own new beginning.

Moments like these remind me that real estate is never just about a house. It’s about the lives that unfold within it, and I never take for granted the privilege of being part of those milestones. ❤️

07/14/2026
07/08/2026

One of the reasons I love real estate is that home is about so much more than a transaction.

It's where mornings begin.

It's where gardens grow.

It's where neighbors become friends.

Helping people find a place to build a life like that is one of the most rewarding parts of what I do.

Can you picture the kids spending the afternoon here?Pool games.Birthday parties.Summer cookouts.Friends gathered under ...
06/06/2026

Can you picture the kids spending the afternoon here?

Pool games.
Birthday parties.
Summer cookouts.
Friends gathered under the lanai.

Some homes are built to impress.
Others are built to be enjoyed.

1620 Marina Lake Drive is still available.

🔗https://www.krghome.com/1620-marina-lake-drive

Homeownership has long been one of the most effective ways for families to build wealth and create financial stability f...
06/05/2026

Homeownership has long been one of the most effective ways for families to build wealth and create financial stability for future generations.

Today, I was honored to join Senator Ashley Moody, Mayor Chris Robertson, and other community leaders to discuss the new Trump Accounts initiative and the opportunities it may create for young people.

During my remarks, I shared that these accounts can do more than support education and entrepreneurship. They may also help future generations take a step toward homeownership through down payment assistance and long-term financial planning.

As a Realtor, I see every day how homeownership can change the trajectory of a family's future. That's why I believe it's important to have conversations about creating more pathways to the American Dream.

What are your thoughts on helping our next generation build a stronger financial foundation for their future?

Learn more about Trump Accounts here: https://trumpaccounts.gov and https://www.irs.gov/trumpaccounts

Some homes are where you live. Others become the place everyone comes back to.For years, this was the house where birthd...
06/01/2026

Some homes are where you live. Others become the place everyone comes back to.

For years, this was the house where birthdays were celebrated, Easter eggs were hidden across the backyard, prom photos were taken on the staircase, and teenagers gathered in the loft with friends.

Set on over half an acre inside the gated community of Ashley Cove, this one-owner home offers something that's becoming harder to find: room for life to happen.

🏡 5 Bedrooms
🏡 4 Bathrooms
🏡 3,643 Sq Ft
🏡 .53 Acre Lot
🏡 Saltwater Pool & Spa
🏡 Outdoor Kitchen
🏡 Detached 20x20 Workshop with Electric
🏡 Gated Community

The pool, backyard, and workshop are impressive.
But what makes this home special is everything that happened here.

Take a look inside:
🔗

Discover 1620 Marina Lake Drive, a spacious Kissimmee pool home featuring a detached shop, oversized backyard, flexible living spaces, and exceptional outdoor entertaining potential in an established Central Florida neighborhood.

05/22/2026

Some homes feel different the moment you arrive.

Not because of the square footage, but because of the feeling they create.

The quiet.�The space.�The backyard evenings.
�The slower pace at the end of the day.

Tucked inside the gated community of Ashley Cove, this one-owner home sits on one of the largest lots in the neighborhood and offers something that’s becoming harder and harder to find in Central Florida, room to truly live.

✨ 5 Bedrooms�✨ .53 Acre Lot�✨ Resort-Style Pool�✨ Detached Workshop�✨ Oversized 3-Car Garage

📍1620 Marina Lake Drive, Kissimmee

Because some homes deserve more than a listing.

05/15/2026

Some homes are memorable because of the updates.

Others are memorable because of the life lived there.

Coming soon in St. Cloud. 🌳

The net worth of a homeowner is 43x greater than that of a renter. Not 2x. Not 5x. Forty-three.And even if renting feels...
04/21/2026

The net worth of a homeowner is 43x greater than that of a renter. Not 2x. Not 5x. Forty-three.

And even if renting feels like the easier move right now, that’s a number that sticks with you because it shows what’s at stake over time.

Look, I know buying can feel out of reach. But when’s the last time you actually ran the numbers? Because you might be closer than you think.

Now that doesn’t mean you have to buy today. But you should at least know your options and what it would take to get there.

Want to stop renting and start building something for yourself? DM me and come up with a plan together. Your timeline. Your budget. Your future.

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Saint Cloud, FL

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