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Rosanne D'Agostino

Douglas Elliman Real Estate
68 Closed Sales
$36.8M Total Value
$337K - $1.2M Price Range
$541.3K Average Price
Prior 5 years

About Rosanne

With years of experience helping buyers and sellers throughout Suffolk County, Rosanne D’Agostino is a trusted real estate agent specializing in Smithtown, Centereach, Coram, Setauket, Stony Brook, Mount Sinai, Port Jefferson, Port Jefferson Station, Westhampton Beach and surrounding Long Island communities. Known for her personalized approach and deep local knowledge, Rosanne guides clients through every step of the buying and selling process — from listing preparation and pricing strategy to closing and relocation.

As an Associate Broker with Douglas Elliman Real Estate, Rosanne combines professional expertise with a commitment to delivering exceptional results. Her focus on building lasting relationships and understanding the unique needs of each client ensures that every home transaction is smooth, successful, and stress-free.

Whether you’re buying your first home, selling a family property, or exploring investment opportunities in Suffolk County, Rosanne’s hands-on approach and in-depth market insight make her the go-to resource for navigating Long Island real estate with confidence.
Home Types: House, Condo, Co-op, Townhouse
Years of Experience: 11
Education: St. Joseph's College- Bachelor's in Social Science

Transaction History

Seller Deals

Total Deals
9
Total Value
$5,843,000
Average Sale Price
$649,222
Price Range
$500K - $1.2M

Buyer Deals

Total Deals
4
Total Value
$3,081,388
Average Sale Price
$770,347
Price Range
$675K - $875K

Production Over Time

1 Year View by Quarter

Seller Deals

Total Deals
24
Total Value
$14,537,000
Average Sale Price
$605,708
Price Range
$340K - $1.2M

Buyer Deals

Total Deals
12
Total Value
$7,297,388
Average Sale Price
$608,116
Price Range
$200K - $1.1M

Production Over Time

2 Year View by Quarter

Seller Deals

Total Deals
39
Total Value
$22,600,000
Average Sale Price
$579,487
Price Range
$138K - $1.2M

Buyer Deals

Total Deals
29
Total Value
$14,211,748
Average Sale Price
$490,060
Price Range
$190K - $1.1M

Production Over Time

5 Year View

Rosanne's Listings and Deals

Awards and Designations

  • Leading Edge Award
  • President's Circle
  • CDS - Divorce Specialist Certification

Other Experience

First Time Home Buyers, Luxury Homes, Military Families, New Construction, Senior Communities, Veteran Programs
Agent License: New York #10301217906
Agent Photo

Rosanne D'Agostino