Owner

About Tammy

who can argue with well over a billion of sales in her career—tammy donnelly has truly earned the right to be considered a go-to professional when you want real estate done right. she is nothing less than a living legend, for all her clients and customers with the 340 real estate company and among colleagues in profession & community locally. famous for her unparalleled realty acumen and st. john marketplace secrets, tammy has an astounding resume while making sales records along the way, as well as a knack to address any challenge that may come up during negotiation… all the while exuding cool confidence- because when it came down to brass tacks: “a lot was at stake!

She is a Pittsburgh, PA native and her parents moved to St John in 1978 — she has never left. With all the various shades of blue water and green mountains it was easily love at first sight for this island girl! She graduated from Antilles School on St Thomas in 1982 after working as a windsurf instructor, worked her way up the ladder in the restaurant business, she built a successful property management business which led to obtain her real estate license, then two years later becoming broker. She spent 24 years + of her career meeting and helping all the wonderful people she has met who either needed to sell a piece of property or wanted to buy that special “piece of the rock”. She loves helping people and has met so many amazing people some she is friends with to this day.

Tammy lives with her husband Jeff in Fish Bay, where presumably the couple and their 2 rescue pups live happily ever after? Her two kids, both born and raised in St John. Just Grown and gone but in 2017 her daughter returned with her family to hopefully raise them on St John as she loved how it is growing up here. Tammy says she feels so fortunate to have them living down the road, watching them grow up..

Read More

Tammy's Vision

At 340 Real Estate, we are a boutique, locally-rooted firm with a deep love for our island home. We’re passionate about connecting with people and helping them discover their own “piece of the rock.” Committed to excellence, integrity, and hard work, we strive to make every real estate journey a positive and personalized experience.

Celebrating 25 Years of Real Estate Excellence on St. John

Your Trusted Partner in Paradise – Since 1999

This year marks 25 years since I started my real estate journey on the beautiful island of St. John. What began as a passion for helping people find their piece of paradise has grown into a trusted name in island real estate.

From vacation homes and investment properties to first-time buyers and dream homes, it's been an incredible ride—one filled with relationships, stories, and a deep love for this vibrant community.

I’m filled with gratitude for every client, colleague, and friend who’s been part of this journey. Whether you're buying, selling, or simply exploring what St. John has to offer, I’m here to help you every step of the way.

Thank you for being part of this journey. Here’s to 25 years of service — and many more to come!"

Let’s make the next chapter even more memorable—together.


Broker/Owner – 340 Real Estate Co.

Get in touch

Reach Out for Villa Rentals: Contact Us Today!


What Our Clients Say

"TAMMY is a very good real estate agent who knows the area and laws to get the job completed. I would refer her in an instant and use her again if I needed her services. Highly recommended! "

Dbarbier

"Tammy was so helpful while we were buying our villa on St John. We had been thinking about buying for years, but after working with Tammy, we felt so better prepared for the ownership. It has been over 6 months since our purchase and we could not be happier!"

Lynn Hood

"Tammy is very professional and knowledgeable about the market on St John! She kept me informed on all new properties coming on the market so we were able to get the first offer in on our new Villa! This is the third time I have used Tammy for my Realestate needs on St John! If you are looking for someone with the best knowledge of the market on St John and outstanding personal follow up choose Tammy!"

mchamberlain550

View All Reviews