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100% Recommended

33 Years In Business

Company Details

  • Bilingual

Contact

875 Mamaroneck Ave. Suite 400
Mamaroneck, NY 10543
http://www.koslbuilding.com

Hours

  • Mon: Open 24 Hours
  • Tue: Open 24 Hours
  • Wed: Open 24 Hours
  • Thu: Open 24 Hours
  • Fri: Open 24 Hours
  • Sat: Open 24 Hours
  • Sun: Open 24 Hours
View All Details & Credentials

Achievements

Seal of Approval
Top Rated Professional
Elite Service Professional
Super Service Award

Service Details

  • Residential Work

Areas of Expertise

  • Custom Home Building
  • Property Development
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Warranty Offered

Ratings

5.0
15 Verified Reviews
  • 5
    15
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    0

Highly rated for

  • Quality
  • Value
  • Customer Service

Reviews

Write a Review
Showing 1-10 of 15 results
5.0 Jessica C. Scarsdale, NY
5/26/2023

They were dependable with quick solutions and we couldnâ t be happier. Weâ d recommend them to anyone looking to buy a custom home - we never want to leave our house!

5.0 Andrew G. Scarsdale, NY
4/29/2023

KOSL made a very stressful process much easier and tailored our beautiful new home to perfection. Would highly recommend.

5.0 Brittany H. New Rochelle, NY
4/28/2023

KOSL was recommend to me by a family friend and Iâ m so thankful they did. They made the building process incredibly simple and we couldnâ t be happier with our result. They explained each step of the process throughly, and kept us in the loop the entire time. Id recommend them for others looking to build a custom home.

5.0 Franny M. Scarsdale, NY
4/28/2023

Working with this company was an absolute joy! Highly professional and the best value around.

5.0 Zachary A. Monroe, NY
4/27/2023

KOSL are absolute professionals. They built a custom home for me and my wife and we could not be happier.

5.0 Kaile P. Scarsdale, NY
4/27/2023

When it comes to high standards and performance, KOSL is second to none. They did an incredible job with our home!

5.0 Gisselle L. Scarsdale, NY
4/27/2023

Great company. Very professional and knowledgeable in their work. Would highly recommend them for anyone looking to build their dream home.

5.0 Ryan M. Harrison, NY
4/27/2023

Amazing builders to work with. Receptive to all of our requested changes, even though some were very challenging to meet. I would recommend to anyone.

5.0 Nicholas L. Scarsdale, NY
4/27/2023

Amazing work done by amazing people. We are extremely satisfied with our home! They worked closely with us every step of the way and paid close attention to every little detail throughout the construction. Itâ s a family run business and you can really see their passion for what they do!

5.0 Gabe S. Pittsburgh, PA
4/27/2023

After searching for a credible and quality builder for awhile, we are glad to have found KOSL Building. They helped us find the perfect property in Scarsdale and built the home we always wanted. Anything we needed, they were always there without hesitation. We have recommended them to all our family and friends!

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Photos

KOSL Building
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Harrison
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Rye
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Ardsley
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