About Greg Koster

My name is Greg Koster, and I am proud to work with the community on behalf of New American Funding. As a highly-skilled Branch Manager, NMLS #1840191, my goal is to provide the best customer service possible along with knowledgeable, unbiased advice.



Top Rated
Mortgage Lender

4.9/5 Based on 269,421 Reviews


You're In Good Hands!

4.78/5 Based on 11 reviews
5/5

Santino R.

Transaction Completed:
3/7/2025

"I can’t recommend Greg Koster enough! I was overwhelmed by the mortgage process, but Greg made it an absolute breeze. His expertise and patience were unmatched—he took the time to explain every detail, answered all my questions, and found me a rate that fit my budget perfectly. Greg’s professionalism and genuine care for his clients really set him apart. He was proactive, keeping me updated at every step, and even went above and beyond to ensure everything closed on time. If you’re looking for a mortgage broker who’s knowledgeable, trustworthy, and truly has your back, Greg is your guy."

Setauket, NY
5/5

Alexandra T.

Transaction Completed:
3/4/2025

"They are very patient, explaining to me the process and walking me through it to make sure I understand."

Brooklyn, NY
4/5

Dennis O U.

Transaction Completed:
1/28/2025

"Everything was what was expected ok"

Waterbury, CT
5/5

Allison R.

Transaction Completed:
12/10/2024

"very friendly and professional"

Islip Terrace, NY

Pathway to HomeOwnership

Are you Ready?


At New American Funding, we believe that every person deserves a clear path to achieving their dream of homeownership. So, we created the Pathway to Homeownership initiative to alleviate some of your financial worries.


What is the Pathway to

Homeownership Initiative?


The Pathway to Homeownership offers qualified borrowers in select areas up to $6,000 in assistance. These funds are not a loan that needs to be repaid and are available to first-time homebuyers in designated areas.

This program can also potentially be combined with other down payment assistance programs to offer you even more support as you build the life of your dreams.

Contact me today for more information!

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NAF Cash Can Turn You into a Cash Buyer

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Purchase trends across the country

With NAF Cash, you can make a competitive, true cash offer that is not contingent on financing and close in little as seven days without having to sell your current home first.

Company Culture

NAF360 is our commitment to 360 degrees of trust and respect

NAF360 is our strength of character. It starts with each of us and flows from one person to another. It’s the trust we build with our clients, an understanding we’re here to help. It’s our ongoing contributions to the local community, the assurance we extend a helping hand. NAF360 is felt in our offices, transmitted in every call, evident in every referral, and shines brightly in countless glowing reviews.

Meet The Team

Greg Koster
Greg Koster

Branch Manager

NMLS #1840191

Tel: (516) 974-5310

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Location

New American Funding

Staten Island - Willowbrook

651 Willowbrook Road, ste. 102
Staten Island, NY 10314

Direct: 516-974-5310

Email: greg.koster@nafinc.com

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