$500,000
2 bd1 ba540 sqft Sea Cliff, NY
2 bd1 ba540 sqft
Sea Cliff, NY
Sold 4 months ago
Buyer
Get to know Dawn Costello
Licensed Real Estate Salesperson
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 N...
Specialties
8 Years of experienceBuyer's AgentListing AgentRelocationForeclosureCommercial PropertiesFirst Time HomebuyersInvestment PropertiesRentalsLuxury Homes
Dawn Costello's listings & sales (29)
For Sale
For Rent
Sold
This map can show the most recent 100 listings and 100 sales. Review all listings and sales below.
For Sale (1)
Address | Bed/Bath | Listing price |
|---|---|---|
 16 Altamont Ave Sea Cliff, NY 11579
| 3 Bed, 1 Bath | $749,000 |
For Rent (1)
Address | Bed/Bath | Listing price |
|---|---|---|
 2 Ruth Ln Glenwood Landing, NY 11547
| 3 Bed, 2 Bath | $4,490/mo |
Sold (27)
Address | Sold date | Closing price | Represented | Flag Sale |
|---|---|---|---|---|
| 11/25/2025 | $500,000 | Buyer | ||
| 8/28/2025 | $979,000 | Seller | ||
| 6/3/2025 | $1,205,000 | Seller | ||
| 1/30/2025 | $223,500 | Seller | ||
| 1/30/2025 | $223,500 | Seller |
Dawn Costello's reviews (29)
- 5.0
- 3/1/2026
- • Veronika Dolar
Found a tenant for a home.
We had a wonderful experience working with Dawn! From the very beginning, she was incredibly helpful, knowledgeable, and generous with her time and advice. She took the t...We had a wonderful experience working with Dawn! From the very beginning, she was incredibly helpful, knowledgeable, and generous ...5.0- 8/11/2025
- • Erin Connell
Sold a Single Family home in 2025 in Locust valley, NY.
Dawn is simply the best! She’s been with us through every stage—helping us find the perfect rental, guiding us through buying our first home, and then selling it for a fa...Dawn is simply the best! She’s been with us through every stage—helping us find the perfect rental, guiding us through buying our ... - 5.0
- 8/8/2025
- • don meyer
Bought a Condo home in 2025 in Forest hills, Queens, NY.
Dawn went above and beyond throughout the entire process of my CO-OP purchase. Her professionalism, attention to detail, and constant support made everything smooth and s...Dawn went above and beyond throughout the entire process of my CO-OP purchase. Her professionalism, attention to detail, and const...5.0- 6/19/2025
- • TaylorCuster9
Helped me rent a Multiple Occupancy home in Oyster bay, NY.
Our experience was wonderful! Dawn listened to what we were looking for and helped us find our perfect next step. Moving from out of town, she helped us learn about the a...Our experience was wonderful! Dawn listened to what we were looking for and helped us find our perfect next step. Moving from out ... - 5.0
- 1/20/2025
- • frank longobucco
Found a tenant for a Multiple Occupancy home in Glen cove, NY.
Dawn was an absolute pleasure to work with. Her professionalism and expertise helped us understand the current rental landscape and help set the right rental rate for ou...Dawn was an absolute pleasure to work with. Her professionalism and expertise helped us understand the current rental landscape a...5.0- 6/14/2024
- • Bbokovsky
Bought a Condo home in 2024 in Roslyn heights, NY.
Highly recommended!!! Let's start from the end. --- What I said after closing. " You are awesome. You are like a relative!" ----How I found Dawn My son-in-law's mom r...Highly recommended!!! Let's start from the end. --- What I said after closing. " You are awesome. You are like a relative!" ---... - 5.0
- 2/16/2024
- • devldogz
Sold a home in 2023.
Dawn did an outstanding job helping me sell the house. She had great knowledge of the geographical area and was able to determine a reasonable market value of the house. ...Dawn did an outstanding job helping me sell the house. She had great knowledge of the geographical area and was able to determine ...5.0- 1/17/2024
- • x7j2qb524c
Sold a Single Family home in 2023 in Sea cliff, NY.
Dawn Costello is an absolute credit to her profession and I would highly recommend her to anyone seeking her expertise. I am an attorney, and have dealt with many brokers...Dawn Costello is an absolute credit to her profession and I would highly recommend her to anyone seeking her expertise. I am an at... - 5.0
- 8/6/2023
- • yostan1980
Sold a Single Family home in 2023 in Glenwood landing, NY.
Dawn was amazing helping us sell our house. She was with us every step of the way with informative advice. She was helpful with all aspects of the sale as well as all acc...Dawn was amazing helping us sell our house. She was with us every step of the way with informative advice. She was helpful with al...5.0- 9/1/2022
- • DaveCalzone
Bought a Single Family home in 2021 in Sea cliff, NY.
Dawn was an excellent agent. Print timely responses, excellent advice and she really made me feel like I was her only client. Very knowledgeable about the area market. Wo...Dawn was an excellent agent. Print timely responses, excellent advice and she really made me feel like I was her only client. Very...
