Heidi Karagianis

Heidi Karagianis
Real Estate Agent (Associate Broker)
Greenvale NY

Associate Broker (NY: 10301219443)

REALTOR® 2 Active Listings Serves Nassau County, NY
View on Realtor.com

Contact Information

Brokerage
Daniel Gale Sotheby's International Realty

Office Website
Office Address
342 Wheatley Plz
Greenvale, NY  11548
(Nassau County)
Office Phone
516-626-7600
Office Fax
Mobile
516-466-4036
Email
heidikaragianis@danielgale.com

Service Areas

Thomaston: NY Manhasset: NY Plandome Heights: NY Flower Hill: NY Plandome Manor: NY Plandome: NY North Hills: NY Munsey Park: NY Port Washington: NY Baxter Estates: NY Port Washington North: NY Manorhaven: NY Sands Point: NY Huntington: NY Lloyd Harbor: NY Cold Spring Harbor: NY Glen Cove: NY Glen Head: NY Old Westbury: NY East Hills: NY Roslyn Estates: NY Glenwood Landing: NY Searingtown: NY Roslyn: NY Roslyn Harbor: NY Jericho: NY Muttontown: NY Laurel Hollow: NY Syosset: NY Hicksville: NY Oyster Bay Cove: NY Bethpage: NY Old Bethpage: NY Plainview: NY Upper Brookville: NY Old Brookville: NY Brookville: NY Sea Cliff: NY

About Heidi Karagianis

Heidi is a dedicated real estate professional specializing in the North Shore of Long Island. With a comprehensive understanding of the local market, her commitment to excellence has consistently earned her recognition as a Top Producer throughout her career as a Realtor. Heidi prides herself on delivering personalized service, ensuring that each client feels supported in what is often their most significant financial and emotional investment: their home.

Whether clients are looking to buy or sell, they can expect the integrity, enthusiasm, and professionalism that Heidi brings to every transaction. Her passion for real estate and design is rooted in her fine arts education at Pratt Institute and her extensive experience as a Feature Film Location Manager in New York City. This background has honed her ability to listen attentively and quickly identify her clients' needs, allowing her to tailor her approach for optimal results.

A resident of Port Washington for 17 years, Heidi lives with her husband and their 16-year-old son. Her clients often express their appreciation for her expertise. One client remarked, "Heidi transformed our experience of selling our home of 30 years. Her understanding of the market, coupled with her ability to execute a plan efficiently, made all the difference. She has an exceptional eye for staging and a reliable network of professionals to assist with any necessary preparations. Our long-standing 'honey-do' list was completed in just a week!"

Heidi's insights into market trends, pricing strategies, and effective negotiation techniques are invaluable. Despite managing multiple transactions simultaneously, she ensures that each client feels prioritized and cared for. Her ability to balance numerous responsibilities while providing exceptional service is a testament to her dedication and skill in the real estate industry.

Nassau County, NY Real Estate Market Analysis (Single Family Homes)

$1,496,994
Avg. Listing Price
From Heidi's portfolio
4.1 / 3.0
Avg. Beds/Baths
Typical property size
2,500 sf
Avg. Square Footage
Interior living space
3110
Active Listings
Current inventory

If you need to reach working real estate agents in Nassau County, New York, this list was built for you. Mortgage lenders prospecting for referral partners, title companies looking to grow their closing volume, PropTech platforms launching in the New York metro, insurance providers targeting E&O or home warranty clients, continuing education providers, and recruiters building out their agent pipelines all rely on this data to drive outreach that actually lands in front of licensed professionals.

When you buy Nassau County real estate agent email list data from a source that maintains it properly, you are not just getting a spreadsheet — you are getting a direct line to {{AGENT_COUNT}} actively licensed agents with verified email addresses, plus {{CELL_COUNT}} agents who also have cell phone numbers on file. That kind of reach, at the county level, gives any B2B campaign a serious head start over cold prospecting from scratch.

Why Buy a Nassau County Real Estate Agent Email List From Dr Bill

This data is sourced directly from the New York State real estate licensing board, which means every contact represents a currently licensed agent — not someone who let their license lapse two years ago. New emails are added weekly, the full list is cleaned monthly, and the entire database is refreshed bi-annually. That ongoing maintenance is what backs the 96% deliverability guarantee. Cheap list vendors do not offer that because they cannot — they are reselling stale compiled data with no maintenance cycle behind it.

Dr Bill has been in the list business since 2005 and has sold over 31,000 lists to marketers, lenders, recruiters, and vendors across every industry that serves real estate professionals. That track record matters when you are spending real budget on outreach. The Nassau County file is available at the state, county, city, and zip code level — and no other vendor offers zip code-level segmentation within Nassau County specifically.

How to Use This Nassau County Agent List

The most immediate use is cold email outreach through platforms built for it. Tools like Zap Contact (zapcontact.com) are designed to handle verified B2B contact lists, manage sending volume, and track campaign performance without getting flagged. Beyond email, the same data supports direct mail drops, phone and SMS campaigns using the included cell numbers, and LinkedIn audience matching to layer in display-level touchpoints alongside your direct outreach.

You can also segment the list by broker versus sales agent status, which changes your messaging entirely. Brokers respond to different value propositions than individual agents, and splitting your campaign accordingly consistently improves conversion rates across every channel.

Why Nassau County, New York Agent Data Matters

Nassau County covers a dense, high-activity market that includes Garden City, Great Neck, Hempstead, Mineola, Hicksville, and Valley Stream, among others. With {{AGENT_COUNT}} licensed agents working across these communities, the county represents a concentrated professional population worth targeting on its own terms — not as a footnote inside a statewide New York blast that dilutes your budget across irrelevant markets.

Local targeting at the Nassau County level lets you tailor your offer to the specific submarkets and brokerage culture agents here actually work in. A statewide list means competing for attention alongside every other vendor blasting Albany, Buffalo, and Syracuse simultaneously. A county-level file with zip code segmentation means your message reaches the right agents, in the right neighborhoods, with copy that speaks directly to their market.

Current Property Listings

As of 6/27/2026, Heidi Karagianis has 2 properties for sale in Greenvale and surrounding areas.

$2,799,000

Listed 2026-05-28

17 Hastings Rd
Old Westbury, NY  11568

Beds: 4.0
Baths: 3.5
Sq Ft: 5,241
Lot: 87,120 sf
Single Family Map
View Full Details

$3,950,000

Listed 2026-02-25

18 Harriman Dr
Sands Point, NY  11050

Beds: 6.0
Baths: 5.5
Sq Ft: 5,872
Lot: 87,120 sf
Single Family Map
View Full Details

Current Property Rentals

Heidi Karagianis currently has no rental properties available in Greenvale and surrounding areas. Check back later.