John Grosse

East Islip NY

Howard Hanna Coach

43 Closed Sales

$29.4M Total Value

$425K - $1.7M Price Range

$683.2K Average Price

Prior 5 years

About John

Allison is a life-long resident of East Islip who has been involved in many community projects over the years. Allison is an Associate Broker and along with her husband John, are very successful and knowledgeable Top Producing Realtors.
Member of the Islip Rotary Club and the Ladies Ancient Order of Hibernians.

Home Types: House, Co-op, Condo, MultiFamily, Townhouse

Years of Experience: 14

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	6
Total Value	$6,399,000
Average Sale Price	$1,066,500
Price Range	$600K - $1.7M

Buyer Deals
Total Deals	3
Total Value	$1,930,500
Average Sale Price	$643,500
Price Range	$530K - $731K

Seller Deals
Total Deals	7
Total Value	$7,164,000
Average Sale Price	$1,023,429
Price Range	$600K - $1.7M

Buyer Deals
Total Deals	7
Total Value	$4,592,500
Average Sale Price	$656,071
Price Range	$505K - $935K

Seller Deals
Total Deals	28
Total Value	$19,625,500
Average Sale Price	$700,911
Price Range	$402K - $1.7M

Buyer Deals
Total Deals	15
Total Value	$9,754,000
Average Sale Price	$650,267
Price Range	$130K - $1.2M

5 Year View

Neighborhoods John is Experienced In

Downtown Bay Shore

1 Sale

John's Active Listings

$699,000
- 5 Beds
- 4 Baths
- 2,424 Sq Ft
19 Oak St

Deer Park, NY
Spacious and versatile 5-bedroom, 4-bath property featuring accessory apartment (with proper permits). Endless potential for investors, Multi generational living or savvy buyers looking to create value. The upper level offers a 2-bedroom apartment, while the main level includes a 3-bedroom/2 bath living space with generous room sizes and flexible layout options. Full basement with additional

John Grosse Howard Hanna Coach

Recently Sold

$955,000

Sold Jun 22, 2026
- 5 Beds
- 3.5 Baths
- 2,700 Sq Ft
741 10th St

Islip Terrace, NY
- 6% Above List
- $354/SF
- 16 Days On Market
- Current Est. Value $906K
John Grosse Howard Hanna Coach

$855,000

Sold Mar 26, 2026
- 4 Beds
- 2.5 Baths
- 2,122 Sq Ft
24 Birchwood Dr

Great River, NY
- 13% Below List
- $403/SF
- 22 Days On Market
- Current Est. Value $884K
John Grosse Howard Hanna Coach

$1,650,000

Sold Feb 2, 2026
- 5 Beds
- 3.5 Baths
- 4,188 Sq Ft
30 Lawrence Ln

Bay Shore, NY
- 10% Above List
- $394/SF
- 15 Days On Market
- Current Est. Value $2M
John Grosse Howard Hanna Coach

$1,189,000

Sold Dec 5, 2025
- 5 Beds
- 3 Baths
- 2,700 Sq Ft
127 Church Rd

Great River, NY
- 3% Above List
- $440/SF
- 21 Days On Market
- Current Est. Value $1M
John Grosse Howard Hanna Coach

$600,000

Sold Aug 25, 2025
- 3 Beds
- 2 Baths
- 1,180 Sq Ft
37 Dawes Ave

Amityville, NY
- 4% Above List
- $508/SF
- 29 Days On Market
- Current Est. Value $600K
John Grosse Howard Hanna Coach

$1,150,000

Sold Aug 4, 2025
- 3 Beds
- 2.5 Baths
- 2,608 Sq Ft
47 Amityville St

Islip Terrace, NY
- 28% Above List
- $441/SF
- 6 Days On Market
John Grosse Howard Hanna Coach

$765,000

Sold Apr 26, 2024
- 5 Beds
- 3 Baths
15 Manistee Ln

East Islip, NY
- 10% Below List
- 34 Days On Market
- Current Est. Value $931K
John Grosse Howard Hanna Coach

$950,000

Sold Mar 4, 2024
- 4 Beds
- 4.5 Baths
- 3,101 Sq Ft
12 Josephine Ln

East Islip, NY
- 17% Below List
- $306/SF
- 68 Days On Market
- Current Est. Value $1M
John Grosse Howard Hanna Coach

$526,000

Sold Oct 16, 2023
- 3 Beds
- 2 Baths
25 Pauchogue Ave

East Islip, NY
- 5% Above List
- 26 Days On Market
- Current Est. Value $769K
John Grosse Howard Hanna Coach

Awards and Designations

C-RETS - Certified Real Estate Team Specialist
CBR - Certified Buyer Representative
CHMS - Certified Home Marketing Specialist
SFR - Short Sale & Foreclosure Resource
SRS - Seller Representative Specialist

Other Experience

Distressed Properties, First Time Home Buyers, Foreclosures, Investments, Luxury Homes, Military Families, New Construction, Property Management, Senior Communities, Short Sales, Timeshares, Veteran Programs

Agent License: New York 10301217554

John Grosse

(631) 250-5002

Howard Hanna Coach

(631) 250-5002

Homes for Sale by City

John Grosse

About John

Transaction History

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods John is Experienced In

John's Listings and Deals

John's Active Listings

Recently Sold

Awards and Designations

Other Experience