About Joan Bischoff

Associate Broker - Greenport Office
Licensed as Joan H. Bischoff van Heemskerck
120 Front Street, Greenport, NY 11944

Email: Joan.Bischoff@raveis.com | Cell: 631.948.0234

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North Fork Luxury Real Estate Experts | William Raveis

Choosing the right real estate representation on the North Fork is one of the most important decisions you will make financially, personally, and often generationally. You deserve professionals who combine deep local knowledge, proven results, strategic judgment, and responsible stewardship of the land.

That is exactly what you gain with Joan H. Bischoff and Nicholas Planamento of William Raveis.

Trusted North Fork Buyer & Seller Representation

William Raveis is the leading independent, family-owned real estate brokerage in the Northeast, known for sophisticated marketing, global reach, and full-service support. With industry-leading digital exposure, in-house mortgage and insurance services, and a powerful referral network, William Raveis provides unmatched resources.

What truly sets a transaction apart, however, is who represents you.

As trusted North Fork real estate agents, we bring personalized guidance, strategic advocacy, and a commitment to excellence to every buyer and seller we represent from first-time purchasers to owners of extraordinary legacy properties.

Record-Setting North Fork Real Estate Sales

In December 2025, serving as exclusive seller's agents, we closed the largest real estate transaction in North Fork history:
Trumans Beach | East Marion | 100+ acres | $23.5 million

This landmark sale stands as a defining moment in the North Fork real estate market and a clear demonstration of our ability to handle complex, high-value transactions with discretion, precision, and vision.

Luxury Real Estate with Environmental Stewardship

The Truman's Beach transaction was about more than achieving a record price. The property's extraordinary waterfront setting, environmental sensitivity, and historic significance required thoughtful representation and responsible stewardship.

We approached the sale with a clear understanding of:
● Coastal and environmental considerations
● Zoning and long-term land use implications
● The importance of protecting irreplaceable North Fork landscapes

By strategically positioning the property and engaging the right buyer pool, we helped ensure the land's integrity and legacy were respected proving that exceptional results and environmental responsibility are not mutually exclusive.

This philosophy guides all of our work, particularly with waterfront estates, farmland, and conservation-sensitive properties across the North Fork.

North Fork Waterfront, Farm & Estate Specialists

Our combined experience spans the full range of North Fork real estate, including:
● Waterfront homes and bay-front estates
● Farm, vineyard, and agricultural properties and extensive development rights experience.
● First Time Home Buyer guidance and advice.
● Luxury residences and historic homes
● Investment and legacy holdings

Joan Bischoff van Heemskerck and Nicholas Planamento bring decades of hands-on experience and deep community ties on the North Fork, with a reputation built on results, trust, and unmatched local insight. Together, we offer buyers and sellers a level of market understanding that simply cannot be replicated from outside the region.

Strategic Guidance in Every Market

Real estate transactions are rarely simple especially in today?s market. We provide clear, informed, and steady guidance at every stage, including pricing strategy, negotiations, inspections, contract issues, and closing.

Our approach is:

● Strategic, not transactional

● Customized, not formulaic

● Calm, responsive, and transparent

Whether you are selling a cherished property, purchasing your primary residence, or making a long-term investment, our role is to protect your interests and position you for success.

Why Clients Choose Us

● Proven, record-setting results

● Deep North Fork and East Marion expertise

● Sophisticated marketing and global reach through William Raveis

● Integrity-driven representation

● Long-term relationships built on trust

Our clients are not transactions. They are relationships and we treat them accordingly.

We are proud to have helped many kids who grew up locally homes they thought they could never afford and begin the American Dream.

North Fork Real Estate Representation That Delivers

From historic, record-setting sales to highly personal home purchases, we deliver results while honoring the land, the community, and the trust placed in us.

If you are considering buying or selling on the North Fork and want representation that combines market leadership, discretion, and responsible stewardship, we would be honored to work with you.

Exceptional people and properties deserve exceptional care.

Testimonials

I was not surprised to hear that Joan Bischoff van Heemskerck and Nicholas Planamento had joined William Raveis Real Estate. I had worked with them when they were associated with another company, and where they each stood out due to their integrity as well as their unique senses of both aesthetic and interpersonal style. I knew that these and other qualities and strengths of character would allow them to work together wonderfully well. I had spent every summer of my life in Mattituck, I wanted to find a rental property for the following summer. Money was an issue to us at the time, but Nich didn't make it one. He showed us properties exactly like what we had described, and well within our means, never wasting his time, or ours. He was knowledgeable about every aspect of each property, and believe me, I ask very detailed questions. One of the things I appreciate about Joan and Nich is that they really listen to me, and it shows in their actions. I had the sad task of selling our family's summer home after my mother's death, and after different members of our family had owned it for nearly 60 years. The discovery that my siblings were not interested in keeping it was hard, and the kindness and understanding that Joan extended to me in any part of the sale which he handled, is something I will never forget. Joan has an old-world European elegance sorely needed in this country. I never felt pushed or even felt that Joan thought of what he was doing as work. In every conversation he silently conveyed that he was honored to be helping me, and you know, You can't put a price tag on that. because I had spent every summer of my life in Mattituck, I wanted to find a rental property for the following summer. Money was an issue to us at the time, but Nich didn't make it one. He showed us properties exactly like what we had described, and well within our means, never wasting his time, or ours. He was knowledgeable about every aspect of each property, and believe me, I ask very detailed questions. My work has landed me in Prague for the past few summers, and will again this year. But I know that when we are ready to buy or rent in Mattituck again, I wouldn't dream of working with anyone other than Joan and Nich to find our perfect place. Alison Bolshoi, opera singer"
Alison Bolshoi, Opera Singer
This is just a note of appreciation to say "thank you" for helping us acquire our new home in Southold. We know you spent many, many hours driving us around various hamlets and giving us a wonderful education on the North Fork. We know we will be very happy out here and we truly appreciate your efforts and your professionalism. You did it - You made it happen! We are very grateful. We will be in touch-speak to you soon.
Joan and Paul Simon
"Joan, Thank you very much for all of your kindness and help in finding us a home! You certainly made the process a pleasure and we look forward to a continuing friendship in the future!

Alison Bolshoi, Opera Singer

This is just a note of appreciation to say "thank you" for helping us acquire our new home in Southold. We know you spent many, many hours driving us around various hamlets and giving us a wonderful education on the North Fork. We know we will be very happy out here and we truly appreciate your efforts and your professionalism. You did it - You made it happen! We are very grateful. We will be in touch-speak to you soon.
Joan and Paul Simon

"Joan, Thank you very much for all of your kindness and help in finding us a home! You certainly made the process a pleasure and we look forward to a continuing friendship in the future! "
Liz, Marc, & Emma DeTour

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