What are the opening hours?

Monday 9am - 6pm Tuesday 9am - 6pm Wednesday 9am - 6pm Thursday 9am - 6pm Friday 9am - 6pm Saturday 9am - 6pm Sunday 9am - 6pm

Rosemarie Costa Residential Real Estate

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Mount Sinai, NY
Rosemarie Costa Residential Real Estate

Rosemarie Costa is an associate broker at Coldwell Banker Residential Brokerage Hi, my page is dedicated to Residential Real Estate on beautiful Long Island.

As a native of Long Island and long time professional Associate Real Estate Broker; it is my pleasure to help homeowners achieve their dreams of selling their home and on to the next. When it comes to selling your largest investment, your home, experience does matter. My cell phone number is 631-678-6200. I am here to help.

03/20/2026

03/08/2026

Yippie !

02/24/2026

Find your happy place—and let us help you get there. 🏡
Live well with Coldwell.

02/21/2026

Over the past decade, one-person households have risen significantly, especially in Jackson, Michigan, where the share increased from 28.6% in 2014 to 38.7% in 2024. This shift impacts housing demand and market trends.
Check out your market: https://www.nar.realtor/blogs/economists-outlook/jackson-mi-one-of-the-largest-increases-in-one-person-households

02/17/2026

Is to get your home Sold !

12/11/2025

12/09/2025

This is what happened in Real Estate on Long Island last month,

Address

Mount Sinai, NY
11776

Opening Hours

Monday	9am - 6pm
Tuesday	9am - 6pm
Wednesday	9am - 6pm
Thursday	9am - 6pm
Friday	9am - 6pm
Saturday	9am - 6pm
Sunday	9am - 6pm

Telephone

+16316786200

Website

http://RosemarieCosta.com/

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Our Story

As a native of Long Island and long time professional Associate Real Estate Broker, it is my pleasure to help homeowners achieve their dreams of selling their home and on to the next. When it comes to selling your largest investment, your home, experience does matter. My cell phone number is 631-678-6200. I am here to help.