For Rent $4,475/month • Co-Listing Agent

For Rent $4,675/month • Co-Listing Agent

Mark Stempel

Bellmore NY

Blue Island Homes NY LLC

20 Closed Sales

$20.1M Total Value

$797.5K - $1.8M Price Range

$1M Average Price

Prior five years

About Mark

Owner & Licensed Real Estate Broker – Blue Island Homes

Mark Stempel is the Owner and Licensed Real Estate Broker of Blue Island Homes, one of Long Island’s most respected and award-winning boutique real estate firms. With over 30 years of experience in residential and commercial real estate, Mark is known for his deep market knowledge, hands-on approach, and unwavering commitment to his clients' success.

Holding a Master’s degree in Architecture, Mark brings a unique perspective to every transaction—combining strategic marketing, sharp negotiation skills, and a keen eye for design and value. Under his leadership, Blue Island Homes has become a trusted name in both brokerage and residential development, with divisions specializing in new construction, home improvement contracting, and real estate probate services.

Mark is passionate about helping homeowners, buyers, and investors navigate the ever-changing Long Island real estate market with clarity and confidence. His leadership has earned the firm numerous accolades, including recognition as the Best Boutique Real Estate Agency on Long Island by the Long Island Press.

Whether you're buying your first home, listing a luxury waterfront property, or developing a residential community, Mark delivers the experience, integrity, and results you need.

Home Types: Condo, House, Townhouse, MultiFamily

Years of Experience: 32

Transaction History

1 Year
2 Year

Neighborhoods Mark Has the Most Experience In

Mark's Recent Active Listings

Co-Listing Agent

$899,000
- 3 Beds
- 3 Baths
- 2,052 Sq Ft
11 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$889,000
- 3 Beds
- 3 Baths
- 1,946 Sq Ft
12 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$899,000
- 3 Beds
- 3 Baths
- 2,052 Sq Ft
10 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$899,000
- 3 Beds
- 3 Baths
- 2,052 Sq Ft
9 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$949,000
- 3 Beds
- 3 Baths
- 2,294 Sq Ft
7 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$889,000
- 3 Beds
- 3 Baths
- 1,946 Sq Ft
8 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$879,000
- 3 Beds
- 3 Baths
16 Ocean Watch Ct

Unit 16

Freeport, NY
Introducing this newly renovated waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings in the living

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$879,000
- 3 Beds
- 3 Baths
23 Ocean Watch Ct

Unit 23

Freeport, NY
Introducing this newly renovated waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings in the living

Mark Stempel Blue Island Homes NY LLC

Co-Listing Agent

$959,000
- 3 Beds
- 3 Baths
- 2,294 Sq Ft
13 Ocean Watch Ct

Freeport, NY
Introducing this new construction, to be built waterfront townhome, now available for sale in Ocean Watch at Harbor Pointe-a serene, gated luxury waterfront community. Step inside to discover all-new interiors boasting 9-foot ceilings on the first floor, complemented by 7-foot high 1 3/4" solid wood doors. The second floor features airy 9' ceilings, with a touch of grandeur from vaulted ceilings

Mark Stempel Blue Island Homes NY LLC

Other Experience

Investments, Luxury Homes, New Construction

Agent License #10491210966

Mark Stempel

(855) 938-2478

Blue Island Homes NY LLC

(855) 938-2478

Mark Stempel

About Mark

Transaction History

Seller Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Neighborhoods Mark Has the Most Experience In

Mark's Listings and Deals

Mark's Recent Active Listings

Other Experience