# 99 Constantine Way, Mount Sinai, NY 11766 > **TL;DR:** 2bd/2ba condo, $599,000 ($431/sqft), built 2002, 1,389 sqft. > Fireplace, A/C, 1-car garage. Est. $3,859/mo. Listed 137 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $599,000 | | Price/sqft | $431 | | Bedrooms | 2 | | Bathrooms | 2 full | | Square Feet | 1,389 | | Year Built | 2002 | | Lot Size | 1,390 sqft (0.03 acres) | | Garage | 1-car | | Property Type | Condo (Condominium) | | Status | Pending | | Days on Market | 137 | ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $3,029 | | Estimated Insurance | $175 | | HOA | $655 | | **Total** | **$3,859** | ## Nearby Schools - **Elementary:** Mt Sinai Elementary School - **Middle:** Mt Sinai Middle School - **High:** ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL ## Key Amenities - Fireplace - A/C - 1-car garage ## Property Highlights - Built in 2002 - 0.03 acre lot - Fireplace ## Description ### Agent Description Welcome to this beautiful Dover Lower End Unit! Offers an open floor plan that seamlessly blends the formal dining room and living room area, highlighted by a tray ceiling, crown molding, and a cozy fireplace with double sliding doors that lead to a private back yard. The eat-in kitchen is adorned with granite countertops and custom cabinetry. First-floor master bedroom with a master bath, an additional bedroom, and one full bath, Laundry room, and one-car garage. Enjoy the luxury condo living in the desirable 24-hour gated community, which includes an indoor/outdoor in-ground pool, tennis, bocce, playground, clubhouse w/gym, and a dog run. This home is located close to shops, schools, restaurants, and a park. ## Location - **Address:** 99 Constantine Way, Mount Sinai, NY 11766 - **County:** Suffolk County - **Coordinates:** 40.936717, -73.003796 - **Google Maps:** https://www.google.com/maps?q=40.936717,-73.003796 ## Virtual Tour & Media - **Video Tour:** https://tours.longislandvirtual.com/idx/328032 ## Listing Agent - **Name:** Yaffa Stegemann - **Brokerage:** Douglas Elliman Real Estate - **Broker Phone:** 6317516000 - **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/99-Constantine-Way_Mount-Sinai_NY_11766_M47498-65929?f=listhub&s=MLSLINY&m=1014871&c=propsimple) ## Photos ![99 Constantine Way - Photo 1](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1664084924r.jpg) ![99 Constantine Way - Photo 2](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f4050873123r.jpg) ![99 Constantine Way - Photo 3](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3949308415r.jpg) ![99 Constantine Way - Photo 4](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1212077396r.jpg) ![99 Constantine Way - Photo 5](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2981280726r.jpg) ![99 Constantine Way - Photo 6](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3937427491r.jpg) ![99 Constantine Way - Photo 7](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f4278938240r.jpg) ![99 Constantine Way - Photo 8](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2400042914r.jpg) ![99 Constantine Way - Photo 9](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2005852080r.jpg) ![99 Constantine Way - Photo 10](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f4109778116r.jpg) ![99 Constantine Way - Photo 11](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3136615664r.jpg) ![99 Constantine Way - Photo 12](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3667115151r.jpg) ![99 Constantine Way - Photo 13](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1708672873r.jpg) ![99 Constantine Way - Photo 14](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2400145392r.jpg) ![99 Constantine Way - Photo 15](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f4276954969r.jpg) ![99 Constantine Way - Photo 16](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f4170666215r.jpg) ![99 Constantine Way - Photo 17](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f492053406r.jpg) ![99 Constantine Way - Photo 18](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2337061822r.jpg) ![99 Constantine Way - Photo 19](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f4256156357r.jpg) ![99 Constantine Way - Photo 20](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3057950184r.jpg) ![99 Constantine Way - Photo 21](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1906309950r.jpg) ![99 Constantine Way - Photo 22](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3345514129r.jpg) ![99 Constantine Way - Photo 23](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f942731131r.jpg) ![99 Constantine Way - Photo 24](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3816474239r.jpg) ![99 Constantine Way - Photo 25](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2053077354r.jpg) ![99 Constantine Way - Photo 26](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f458429369r.jpg) ![99 Constantine Way - Photo 27](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f2798513385r.jpg) ![99 Constantine Way - Photo 28](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3745292969r.jpg) ![99 Constantine Way - Photo 29](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3385402082r.jpg) ![99 Constantine Way - Photo 30](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1598179363r.jpg) ![99 Constantine Way - Photo 31](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1553529872r.jpg) ![99 Constantine Way - Photo 32](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3322076989r.jpg) ![99 Constantine Way - Photo 33](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f3979371706r.jpg) ![99 Constantine Way - Photo 34](http://lh.rdcpix.com/8247fac3533f416de364caf25764b2d6l-f1831424444r.jpg) --- **MLS#:** 1014871 | **Updated:** 2026-10-24 **Source:** listhub *Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.* [View on PropertySimple](https://www.propertysimple.ai/listing/99-constantine-way-mount-sinai-ny-11766-35fe186214e84bb4a39ea832e9b4e663) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/99-constantine-way-mount-sinai-ny-11766-35fe186214e84bb4a39ea832e9b4e663#listing", "url": "https://www.propertysimple.ai/listing/99-constantine-way-mount-sinai-ny-11766-35fe186214e84bb4a39ea832e9b4e663", "name": "99 Constantine Way, Mount Sinai, NY 11766", "description": "Welcome to this beautiful Dover Lower End Unit! Offers an open floor plan that seamlessly blends the formal dining room and living room area, highlighted by a tray ceiling, crown molding, and a cozy fireplace with double sliding doors that lead to a private back yard. 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