Diana Kostandi

Staten Island NY

JM Properties

28 Closed Sales

$19.5M Total Value

$383K - $1.9M Price Range

$696.7K Average Price

Prior 5 years

About Diana

With over 20 years of hands-on experience as a landlord and property manager, I bring a deep, practical understanding of real estate to every client I serve. My passion for the industry began long before my career did, and five years ago I transformed that lifelong interest into a full-time profession. Since then, I’ve built my business on expertise, integrity, and a genuine commitment to helping others achieve their goals.
I take pride in guiding clients through some of the most meaningful financial decisions of their lives. Whether I’m helping first-time homebuyers navigate the journey to homeownership or supporting investors as they expand their portfolios, I offer personalized service, clear communication, and a wealth of real-world knowledge. My goal is always to provide confidence, clarity, and a smooth experience from start to finish.
Driven, dedicated, and deeply invested in my clients’ success, I look forward to helping you reach your real estate goals—no matter where you are in your journey.

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

Years of Experience: 5

Transaction History

1 Year
2 Year
5 Year

Buyer Deals
Total Deals	7
Total Value	$3,711,000
Average Sale Price	$530,143
Price Range	$450K - $650K

1 Year View by Quarter

Seller Deals
Total Deals	4
Total Value	$4,059,600
Average Sale Price	$1,014,900
Price Range	$290K - $1.9M

Buyer Deals
Total Deals	12
Total Value	$7,576,000
Average Sale Price	$631,333
Price Range	$450K - $890K

Seller Deals
Total Deals	8
Total Value	$7,494,500
Average Sale Price	$936,813
Price Range	$290K - $1.9M

Buyer Deals
Total Deals	20
Total Value	$12,013,200
Average Sale Price	$600,660
Price Range	$383K - $890K

5 Year View

Neighborhoods Diana is Experienced In

Diana's Active Listings

$1,249,900
- 4 Beds
- 3 Baths
- 2,680 Sq Ft
24 Ross Ln

Staten Island, NY
24 Ross Lane - Eltingville, Staten Island Step back in time and experience the timeless charm of this beautiful Victorian home situated on an oversized, private property in the heart of Eltingville. Rich in character and craftsmanship. This home was completely renovated and restored 1989 and had an addition added to this 3-4 bedroom residence showcases stunning original woodwork throughout,

Diana Kostandi JM Properties

$799,900
- 3 Beds
- 2.5 Baths
- 1,150 Sq Ft
11 N Rhett Ave

Staten Island, NY
Welcome to 11 N Rhett Avenue! Updated 3 bedroom, 3 bath ranch on a quiet block in the heart of Great Kills. Completely renovated in 2016, the home offers a modern & efficient layout with a finished basement adding an additional 1,150 sqft for work, guests, or downtime, plus a beautiful backyard with an above ground pool for those hot summer days. The roof was just completely replaced and comes

Diana Kostandi JM Properties

$549,900
- 4 Beds
- 3.5 Baths
- 1,553 Sq Ft
128 Emily Ln

Staten Island, NY
Beautifully maintained 4 bedroom, 4 bath townhome located in the Aspen Knolls Community! Step inside to a welcoming foyer with direct access to a pristine garage and a versatile fourth bedroom complete with its own private bath. The second level features beautiful hardwood floors, a convenient half bath, a spacious living room, and a generously sized kitchen ideal for everyday living and

Diana Kostandi JM Properties

Recently Sold

$469,600

Sold Jun 12, 2025
- 2 Beds
- 1.5 Baths
- 972 Sq Ft
35 Melissa St

Unit 91

Staten Island, NY
- 3% Below List
- $483/SF
- 53 Days On Market
- Current Est. Value $496K
Diana Kostandi JM Properties

$290,000

Sold Mar 21, 2025
- 1 Bed
- 1 Bath
- 650 Sq Ft
49 Vera St

Unit E

State Island, NY
- 5% Above List
- $446/SF
- 39 Days On Market
Diana Kostandi JM Properties

$1,850,000

Sold Oct 3, 2024
- 4 Beds
- 2.5 Baths
- 2,676 Sq Ft
96 70th St

Brooklyn, NY
- $691/SF
- 16 Days On Market
- Current Est. Value $2M
Diana Kostandi JM Properties

$1,560,000

Sold Jun 20, 2024
- 4 Beds
- 3 Baths
- 2,160 Sq Ft
23 Bay 7th St

Brooklyn, NY
- 8% Below List
- $722/SF
- 151 Days On Market
- Current Est. Value $1M
Diana Kostandi JM Properties

$544,900

Sold Mar 18, 2024
- 3 Beds
- 3 Baths
- 1,212 Sq Ft
914 Post Ave

Staten Island, NY
- 16% Below List
- $450/SF
- 239 Days On Market
- Current Est. Value $603K
Diana Kostandi JM Properties

$625,000

Sold Oct 6, 2022
- 3 Beds
- 2 Baths
- 1,836 Sq Ft
54 Trossach Rd

Staten Island, NY
- 4% Below List
- $340/SF
- 46 Days On Market
- Current Est. Value $735K
Diana Kostandi JM Properties

$705,000

Sold May 5, 2022
- 3 Beds
- 2 Baths
- 1,040 Sq Ft
27 Alpine Ct

Staten Island, NY
- 18% Above List
- $678/SF
- 13 Days On Market
- Current Est. Value $804K
Diana Kostandi JM Properties

Other Experience

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

Agent License: New York #10401355696

Diana Kostandi

(551) 205-0193

JM Properties

(551) 205-0193

Homes for Sale by City

Diana Kostandi

About Diana

Transaction History

Buyer Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Buyer Deals

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods Diana is Experienced In

Diana's Listings and Deals

Diana's Active Listings

Recently Sold

Other Experience