Section Image

Dawn Costello

5.0stars, 11 Reviews
Douglas Elliman Real Estate
16 Closed Sales
$11.4M Total Value
$521K - $1.5M Price Range
$713.5K Average Price
Prior five years

About Dawn

Dawn Costello: Sea Cliff & North Shore’s Digital Marketing Powerhouse | Fast, Profitable Home Sales

Are you searching for a real estate agent who will make your home stand out and sell for maximum value—fast?

I’m Dawn Costello, a local expert who brings Fortune 500 marketing power to every listing in Sea Cliff, North Shore School District, Glen Cove, Roslyn, Locust Valley and the surrounding area. My 20+ years with brands like HGTV, AOL, and Food Network taught me how to leverage advanced digital and AI marketing tools so your property reaches top buyers everywhere—on every screen.

Here’s what sets me apart:
* Precision Targeting: I use best-in-class AI, social media, online ads, and retargeting—your home gets maximum exposure to buyers.
* Record Results: Sellers love my track record—multiple offers, over-ask sales, and deals closed in record time.
* White Glove Service: From pre-listing prep and professional photography to skilled negotiation and closing, I personally oversee every step—so you can be assured you are in good hands.
* Your Local Advantage: As an active North Shore resident and community advocate, I know what makes this market move and how to showcase your home’s unique story.

Ready to sell smart? I’ll make your move the easiest—and most profitable—yet. Contact me today at 917.224.2442 for a strategy that creates real results.
Home Types: Co-op, House
Years of Experience: 7
Education: Cornell University, and Commercial Real Estate Certificate

Transaction History

Seller Deals

Total Deals
3
Total Value
$2,407,500
Average Sale Price
$802,500
Price Range
$224K - $1.2M

Seller Deals

Total Deals
6
Total Value
$4,910,500
Average Sale Price
$818,417
Price Range
$224K - $1.2M

Buyer Deals

Total Deals
3
Total Value
$1,682,000
Average Sale Price
$560,667
Price Range
$355K - $675K

Seller Deals

Total Deals
10
Total Value
$7,914,488
Average Sale Price
$791,449
Price Range
$224K - $1.5M

Buyer Deals

Total Deals
6
Total Value
$3,502,000
Average Sale Price
$583,667
Price Range
$355K - $769K

Dawn's Listings and Deals

Awards and Designations

  • ABR - Accredited Buyer Representative

Other Experience

Distressed Properties, First Time Home Buyers, Foreclosures, Investments, Luxury Homes, Senior Communities

Dawn's Reviews

5.0stars, 11 Reviews

9/6/22Dave Calzone

Google Review

Dawn was an excellent agent. Timely responses, excellent advice and she really made me feel like I was her only client. Very knowledgeable about the area market. Would highly recommend.

8/2/22alan

Google Review

I highly recommend Dawn Costello to help anyone looking to sell their property. She helped me with an estate sale on the North Shore of Long Island and made things very easy, which was critical as I live out of state. Dawn is a digital marketing whiz at marketing properties and she secured an offer above asking within a few weeks. Dawn went above and beyond to ensure everything went smoothly and was a pleasure to work with. She keenly understands the real estate market and shared excellent advice throughout. I am very confident you will be in great hands with Dawn.

9/21/21Christian Adams

Google Review

Dawn was INCREDIBLE. She not only helped us find a beautiful rental but when we returned to her to buy a home she helped navigate the entire process with us and was a gem from start to finish. She is the perfect balance of providing information you need to think about as well as allowing you to make decisions about homes on your own and also had a Rolodex of helpful experts, from plumbing, to legal, to movers, and home inspectors and on and on. Dawn was a one stop shop and was an unflagging advocate and guide for us throughout the entire home buying process.

Beyond her expertise she also made it fun, whenever we entered a new home she always could help us imagine fun ways to use the space; truly she was a joy to house hunt with.

If you want the best go with Dawn!!

Agent License: New York #10401322926
Agent Photo

Dawn Costello