Kathleen Doubleday
Real Estate Agent (Associate Broker)
Bridgehampton NY

Associate Broker (NY: 10301220011)

REALTOR® 1 Active Listings Serves Suffolk County, NY
View on Realtor.com

Contact Information

Brokerage
Serhant East End Llc

Office Website
Office Address
2405 Main St B
Bridgehampton, NY  11932
(Suffolk County)
Office Phone
631-500-8800
Office Fax
Mobile
631-288-6900
Email
katied@serhant.com

Service Areas

East Quogue: NY Quogue: NY Flanders: NY Shinnecock Hills: NY Tuckahoe: NY Hampton Bays: NY Remsenburg-Speonk: NY Westhampton: NY Westhampton Beach: NY Fire Island: NY West Hampton Dunes: NY Quiogue: NY Northampton: NY

About Kathleen Doubleday

**Dee & Kate Estates at Corcoran**

Dee Bonner and Katie Doubleday form a dynamic mother-daughter duo with extensive expertise in the Hamptons real estate market. Their dedication to delivering exceptional service is evident in every interaction, characterized by integrity and loyalty. They take pride in engaging with all facets of real estate, from collaborating with investors on property flips to advocating for both buyers and sellers. As active participants in the real estate community, Dee and Katie approach each day with enthusiasm, committed to providing a high standard of service to their clients.

**Katie Doubleday**

Katie Doubleday is a licensed real estate agent who embarked on her professional journey in 2010 as an assistant to her mother, Dee Bonner. She obtained her real estate license in 2012, humorously noting that her career began long before that, as she often accompanied her mother to open houses. A graduate of Westhampton Beach High School in 2003, Katie earned a Bachelor of Arts in Political Science with a minor in English Writing from Sacred Heart University in 2007. During her college years, she was honored to be a member of the Phi Eta Sigma National Honor Society and the Alpha Alpha Phi Chapter.

After spending seven years in Fairfield County, Connecticut, where she worked in corporate sales, Katie returned to the Hamptons in 2011. Since obtaining her real estate license, she has fully immersed herself in the field. Outside of her professional life, Katie is an avid reader and animal lover who cherishes time spent with her family and pets. She enjoys delving into fiction, listening to music, and attending concerts.

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

$2,260,302
Avg. Listing Price
From Kathleen's portfolio
4.0 / 3.1
Avg. Beds/Baths
Typical property size
2,624 sf
Avg. Square Footage
Interior living space
4211
Active Listings
Current inventory

If you need to reach actively licensed real estate agents working across Long Island's largest county, this list was built for you. Mortgage lenders, title companies, PropTech platforms, insurance brokers, continuing education providers, and sales recruiters all rely on targeted agent data to drive outreach campaigns that actually convert. Rather than wasting budget on statewide blasts that dilute your message, this list puts your offer directly in front of the professionals closing deals in Suffolk County right now.

When you buy Suffolk County real estate agent email list data from a proven source, you get more than a spreadsheet of names. You get a verified, segmented contact file covering {{AGENT_COUNT}} actively licensed agents with confirmed email addresses, plus {{CELL_COUNT}} agents who also have cell phone numbers on file — giving you multiple channels to work with from a single purchase.

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

Every record in this list is sourced directly from the New York Department of State licensing database, so you are never buying guesswork or scraped web data. New emails are added weekly, the full list is cleaned monthly to remove bounces and bad addresses, and the entire database is rebuilt from scratch bi-annually to eliminate stale contacts. The result is a 96% deliverability guarantee that cheap list vendors simply cannot match because they are not doing the maintenance work behind the scenes.

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How to Use This Suffolk County Agent List

Email outreach is the obvious starting point, and this list is formatted for immediate import into cold-email platforms including Zap Contact, which is purpose-built for compliant, high-volume agent prospecting. You can also use the mailing addresses for direct mail drops, leverage cell phone numbers for SMS or ringless voicemail campaigns, and upload the file to LinkedIn or Facebook for matched-audience ad targeting that reinforces your email sequence.

The list ships segmented by broker versus sales agent designation, so you can craft separate messaging for principals who make purchasing decisions versus agents who influence referrals. Filter further by city or zip code to personalize subject lines and offers down to the neighborhood level.

Why Suffolk County, New York Agent Data Matters

Suffolk County stretches from Huntington and Babylon in the west through Islip, Brookhaven, Riverhead, and out to the Hamptons and the North Fork. Each market has its own agent community with distinct volume, specialization, and business needs. Targeting all {{AGENT_COUNT}} agents in the county as a unified audience gives you far better engagement than pulling Suffolk contacts out of a generic New York State file where your message competes with noise from every other market in the state.

No other vendor offers this data segmented down to the zip code level within Suffolk County. That granularity lets you run hyper-local campaigns for a specific town, zip, or corridor rather than paying for coverage you will never use. Whether you need every agent in 11901 or everyone licensed in the Hamptons zip codes, this list delivers the precision that regional and national marketers cannot get anywhere else.

Current Property Listings

As of 6/27/2026, Kathleen Doubleday has 1 property for sale in Bridgehampton and surrounding areas.

$2,199,999

Listed 2026-03-19

580 Dune Rd Unit 5
Westhampton, NY  11978

Beds: 3.0
Baths: 2.5
Sq Ft: 1,597
Lot: 1,594 sf
Condo Map
View Full Details

Current Property Rentals

Kathleen Doubleday currently has no rental properties available in Bridgehampton and surrounding areas. Check back later.