Katherine Koniecko

Syosset NY

Signature Premier Properties

57 Closed Sales

$46.7M Total Value

$540K - $1.6M Price Range

$819.2K Average Price

Prior 5 years

About Katherine

Katherine Koniecko is a licensed real estate sales professional; one who is driven, energetic and business-oriented, yet warm, friendly, and compassionate to the needs and desires of clients and customers. Regardless of the challenge, she is relentless in her pursuit of the perfect property, commercial space, or dream home. Katherine has a vast background in architecture and construction. Before pursuing a career in real estate, she was previously working at her Father's top estimating firm on Long Island. During her time at the firm, she was working with clients on a daily basis; finding bids, acquiring prices and analyzing real estate propositions. It was a great foundation and learning experience for the path she wants to take. Personal Commitment: "To give real service, you must add something which cannot be bought or measured with money, and that is sincerity and integrity." Her enthusiasm, professionalism and knowledge of the area will enable her to assist clients through the process of buying, renting or selling a home.

Home Types: House, Co-op, Townhouse, Condo, MultiFamily, Lot/Land

Years of Experience: 9

Education: Holy Trinity High School

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	13
Total Value	$12,387,750
Average Sale Price	$952,904
Price Range	$660K - $1.4M

Buyer Deals
Total Deals	8
Total Value	$6,723,990
Average Sale Price	$840,499
Price Range	$345K - $1.1M

1 Year View by Quarter

Seller Deals
Total Deals	15
Total Value	$15,153,750
Average Sale Price	$1,010,250
Price Range	$660K - $1.6M

Buyer Deals
Total Deals	15
Total Value	$11,629,990
Average Sale Price	$775,333
Price Range	$200K - $1.3M

2 Year View by Quarter

Seller Deals
Total Deals	25
Total Value	$23,905,838
Average Sale Price	$956,234
Price Range	$125K - $1.6M

Buyer Deals
Total Deals	32
Total Value	$22,787,990
Average Sale Price	$712,125
Price Range	$199K - $1.3M

5 Year View

Neighborhoods Katherine is Experienced In

Katherine's Open Houses

Co-Listing Agent

$800,000

Open Sat 12PM - 2PM
- 4 Beds
- 3 Baths
- 2,265 Sq Ft
28 Royal Oak Dr

Huntington, NY
Nestled on a beautifully landscaped property surrounded by mature trees and natural beauty, this spacious 4 bedroom, 3 full bath Ranch offers the perfect blend of comfort, privacy, and functionality. The home features generous living spaces, natural gas heating, gas fireplace, and a full finished walkout lower level providing exceptional flexibility for recreation, entertaining, a home office,

Katherine Koniecko Signature Premier Properties

$899,999

Open Sun 12:30PM - 2:30PM
- 6 Beds
- 4 Baths
- 2,723 Sq Ft
2864 Eastern Blvd

Baldwin, NY
Welcome to 2864 Eastern Blvd, a spacious 6 bedroom, 4 bath hi ranch perfectly positioned near the Baldwin canal leading into Baldwin Bay. This unique property offers the best of both worlds. A prime South Shore location with flexible living space suited for a variety of lifestyles. Step inside to find an open and sunlit layout with generous room sizes throughout. The upper level features a bright

Katherine Koniecko Signature Premier Properties

Co-Listing Agent

$1,749,999

Open Sat 11:45AM - 1:30PM
- 5 Beds
- 3.5 Baths
- 3,200 Sq Ft
3569 Roger Dr

Wantagh, NY
Experience the pinnacle of luxury in this stunning New Construction located in the heart of the highly coveted Wantagh Woods. This 5 bedroom, 3.5 baths masterpiece showcases unparalleled craftsmanship with custom millwork and bespoke built ins throughout. The chef’s kitchen is a showstopper, featuring top of the line Thermador appliances, a wine fridge, sleek wet bar with a built-in beverage

Katherine Koniecko Signature Premier Properties

Co-Listing Agent

$3,890,000

Open Sat 2:30PM - 4PM
- 6 Beds
- 6 Baths
- 12,000 Sq Ft
33 Beach Rd

Northport, NY
Rising along one of the most prestigious stretches of shoreline in Asharoken, this extraordinary waterfront estate represents the largest and most significant residential offerings in the area. Set on approximately 3.43 private, gated acres with an impressive 400 feet of direct sandy beachfront along the Long Island Sound, the property offers exceptional scale, privacy, and uninterrupted water

Katherine Koniecko Signature Premier Properties

$3,299,888

Open Sun 12PM - 1:30PM
- 6 Beds
- 5.5 Baths
- 4,400 Sq Ft
33 High Farms Rd

Glen Head, NY
Welcome to a rare opportunity to own a fully renovated and extended estate—rebuilt from the studs up and reimagined for modern luxury in the heart of one of Long Island’s most coveted neighborhoods. Set on a beautifully manicured 2 acre lot, this 6-bedroom, 5.5-bathroom smart residence combines sophisticated design, premium finishes, and cutting-edge amenities, offering a seamless blend of

Katherine Koniecko Signature Premier Properties

Katherine's Active Listings

$1,949,000
- 6 Beds
- 5.5 Baths
- 3,595 Sq Ft
199 Cold Spring Rd

Syosset, NY
Tucked away off the main road on a private drive, in North Syosset this exceptional residence sits on 1.05 flat, park like acres offering privacy, space, and timeless curb appeal. Constructed from natural stone, the home blends classic elegance with everyday easy living across a spacious and versatile layout featuring 6 bedrooms, 5 full baths, and 1 half bath.A dramatic entry foyer with

Katherine Koniecko Signature Premier Properties

$2,695,000
- 5 Beds
- 3.5 Baths
- 4,100 Sq Ft
1 Glenby Ln

Glen Head, NY
Tucked away in the heart of Brookville, this exceptional 2-acre estate at 1 Glenby Lane offers the perfect blend of luxury, privacy, and comfort within the highly regarded Locust Valley Central School District. Surrounded by lush, expansive grounds, the property unfolds into a sprawling, park-like setting complete with a full tennis court and a beautiful in-ground pool creating your own private

Katherine Koniecko Signature Premier Properties

$5,895,000
- 6 Beds
- 7.5 Baths
- 7,000 Sq Ft
27 Victorian Ln

Glen Head, NY
Welcome to an extraordinary estates of timeless elegance located at 27 Victorian Lane, Brookville NY. — a distinguished estate that embodies architectural grace in one of the most prestigious residential setting. Set across approximately 2 acres of professionally landscaped grounds, this exceptional residence spans roughly 7,000 square feet of thoughtfully designed interior space, offering a rare

Katherine Koniecko Signature Premier Properties

$2,799,999
- Land
- 2 Acres
- $1,400,000 per Acre
169 Middle Neck Rd

Sands Point, NY
DEVELOPERS, VISIONARIES, AND BUILDERS! Welcome to 169 Middle Neck Road, Sands Point, NY — an incredible opportunity to create something truly special in one of Long Island’s most prestigious locations. Set on 2 flat, private acres, this property offers the perfect foundation to renovate, expand, or build your dream luxury estate in the heart of Sands Point. The existing 4,600+ square foot

Katherine Koniecko Signature Premier Properties

$729,999
- 4 Beds
- 2 Baths
- 1,280 Sq Ft
522 Southern Pkwy

Uniondale, NY
Welcome to this fully renovated 4-bedroom, 2-bath home offering modern and effortless living. Situated on a desirable corner property with a private driveway, this home provides both convenience and curb appeal.Step inside to a open floor plan featuring a stunning brand-new white kitchen featuring sleek quartz countertops and contemporary finishes. Both bathrooms have been completely

Katherine Koniecko Signature Premier Properties

$2,199,999
- 6 Beds
- 3.5 Baths
- 5,103 Sq Ft
9 Chicken Valley Rd

Glen Head, NY
Sprawling Brick Expanded Ranch in Prestigious Old Brookville! Welcome to this impressive custom-expanded ranch, rebuilt in 2001 and nestled on 2.2 flat acres in the heart of Old Brookville. Offering over 5,100 sq ft of living space, this 6-bedroom, 3.5-bath home combines generous scale with a versatile open floor plan—perfect for both everyday living and entertaining. Highlights include a large

Katherine Koniecko Signature Premier Properties

$1,299,999
- 4 Beds
- 2 Baths
- 1,620 Sq Ft
138 Claudy Ln

New Hyde Park, NY
Experience refined suburban living at 138 Claudy Lane – a distinguished residence set in the coveted Lakeville Estates and zoned for Great Neck South School District.Perfectly positioned on a corner lot, this beautifully maintained 4-bedroom, 2-bath ranch showcases exceptional curb appeal, lush landscaping, and timeless design throughout.Inside, an inviting open layout is accented by

Katherine Koniecko Signature Premier Properties

Recently Sold

$830,000

Sold May 6, 2026
- 5 Beds
- 3 Baths
- 2,465 Sq Ft
28 Sanford St

Huntington Station, NY
- 2% Below List
- $337/SF
- 95 Days On Market
- Current Est. Value $784K
Katherine Koniecko Signature Premier Properties

$685,000

Sold Mar 26, 2026
- 3 Beds
- 2 Baths
- 1,136 Sq Ft
792 Frankford Rd

West Babylon, NY
- 10% Above List
- $603/SF
- 15 Days On Market
- Current Est. Value $660K
Katherine Koniecko Signature Premier Properties

$1,320,000

Sold Feb 26, 2026
- 5 Beds
- 3.5 Baths
- 2,300 Sq Ft
159 Brixton Rd

Garden City, NY
- 6% Below List
- $574/SF
- 143 Days On Market
- Current Est. Value $1M
Katherine Koniecko Signature Premier Properties

$940,000

Sold Dec 4, 2025
- 4 Beds
- 3.5 Baths
- 2,248 Sq Ft
70 Sugar Toms Ln

East Norwich, NY
- 4% Below List
- $418/SF
- 133 Days On Market
- Current Est. Value $973K
Katherine Koniecko Signature Premier Properties

$900,000

Sold Nov 26, 2025
- 4 Beds
- 3 Baths
- 1,697 Sq Ft
8624 253rd St

Bellerose, NY
- 2% Above List
- $530/SF
- 14 Days On Market
- Current Est. Value $882K
Katherine Koniecko Signature Premier Properties

$820,000

Sold Nov 7, 2025
- 3 Beds
- 2 Baths
- 1,700 Sq Ft
11 Arden Ct

Melville, NY
- 9% Above List
- $482/SF
- 21 Days On Market
- Current Est. Value $821K
Katherine Koniecko Signature Premier Properties

$990,000

Sold Sep 23, 2025
- 4 Beds
- 2.5 Baths
- 2,843 Sq Ft
12 W Sanders St

Greenlawn, NY
- 4% Above List
- $348/SF
- 21 Days On Market
- Current Est. Value $1M
Katherine Koniecko Signature Premier Properties

$789,000

Sold Aug 25, 2025
- 3 Beds
- 2 Baths
- 1,650 Sq Ft
23 Cherokee St

Massapequa, NY
- 5% Above List
- $478/SF
- 48 Days On Market
- Current Est. Value $773K
Katherine Koniecko Signature Premier Properties

$883,750

Sold Aug 22, 2025
- 3 Beds
- 2 Baths
- 1,881 Sq Ft
947 N 6th St

New Hyde Park, NY
- 7% Below List
- $470/SF
- 72 Days On Market
- Current Est. Value $917K
Katherine Koniecko Signature Premier Properties

Agent License: New York 10401304416

Katherine Koniecko

(516) 703-2819

Homes for Sale by City

Katherine Koniecko

About Katherine

Transaction History

Seller Deals

Buyer Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Buyer Deals

Production Over Time

2 Year View by Quarter

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods Katherine is Experienced In

Katherine's Listings and Deals

Katherine's Open Houses

Katherine's Active Listings

Recently Sold