Sean Mack

Cortland NY

Hartnett Realty Solutions

34 Closed Sales

$6.4M Total Value

$59K - $695K Price Range

$188.3K Average Price

Prior 5 years

About Sean

Been A Realtor for 39 years.

Home Types: House, Condo, MultiFamily, Lot/Land, Manufactured, Commercial

Years of Experience: 42

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	7
Total Value	$1,630,000
Average Sale Price	$232,857
Price Range	$42K - $695K

Buyer Deals
Total Deals	3
Total Value	$438,900
Average Sale Price	$146,300
Price Range	$75K - $184K

1 Year View by Quarter

Seller Deals
Total Deals	11
Total Value	$2,392,670
Average Sale Price	$217,515
Price Range	$42K - $695K

Buyer Deals
Total Deals	5
Total Value	$873,900
Average Sale Price	$174,780
Price Range	$75K - $310K

Seller Deals
Total Deals	24
Total Value	$4,798,970
Average Sale Price	$199,957
Price Range	$42K - $695K

Buyer Deals
Total Deals	10
Total Value	$1,602,200
Average Sale Price	$160,220
Price Range	$59K - $360K

5 Year View

Neighborhoods Sean is Experienced In

Cortland

9 Sales
Cortlandville

8 Sales
Virgil

3 Sales
Groton

1 Sale
Newark Valley

1 Sale
Locke

1 Sale

Sean's Active Listings

$149,900
- 3 Beds
- 2 Baths
- 2,416 Sq Ft
1229 State Route 392

Cortland, NY
Great Virgil location offered in this spacious older home with 3 story barn and over 3 acre parcel! The barn roof was replaced approx. 6 years ago. Owner's improvements include barn roof, laminate flooring, updated plumbing, hot water heater and primary bedroom mini-split heater/ air conditioner. Other features include ,hardwoods in living room and dining room, vinyl windows, and all appliances.

Sean Mack Hartnett Realty Solutions

$330,000
- 5 Beds
- 5,400 Sq Ft
5 Elm St

Tully, NY
5 apartments plus storefront in vibrant hamlet of Tully. Short drive to Syracuse and Cortland. Right off Interstate 81. Explore the possibilities!

Sean Mack Hartnett Realty Solutions

$199,900
- 3 Beds
- 1.5 Baths
- 1,200 Sq Ft
305 S Main St

Groton, NY
Charming village home with extra deep lot. In the same family for over 50 years!

Sean Mack Hartnett Realty Solutions

$234,900
- 3 Beds
- 2 Baths
- 1,392 Sq Ft
4325 Cosmos Hill Rd

Cortland, NY
Prime location is featured with this California style ranch. Enjoy the spectacular views, sunsets and a carefree lifestyle accented with the homes great room effect. The primary bedroom has its own bathroom and walk-in closet. Spend summers lounging at your backyard patio and staying refreshed in the inground pool. The lot expands to include the field in the rear and offers possibilities for a

Sean Mack Hartnett Realty Solutions

Co-Listing Agent

$165,000
- 7 Beds
- 3 Baths
- 2,160 Sq Ft
52 Maple Ave

Cortland, NY
This property has previously been rented to seven students and is currently tenant-occupied. It offers excellent versatility, making it suitable for a variety of owners or investment strategies. There is also strong potential to convert the home into a two-unit property with minimal effort. Conveniently located near downtown, shopping areas, and just minutes from SUNY Cortland. Call for

Sean Mack Hartnett Realty Solutions

Recently Sold

$180,500

Sold Dec 30, 2025
- 5 Beds
- 2.5 Baths
- 1,344 Sq Ft
1087 State Route 221

Marathon, NY
- $134/SF
- 126 Days On Market
- Current Est. Value $186K
Sean Mack Hartnett Realty Solutions

$245,000

Sold Nov 18, 2025
- 4 Beds
- 1 Bath
- 1,596 Sq Ft
14183 New York 90

Locke, NY
- 11% Below List
- $154/SF
- 34 Days On Market
Sean Mack Hartnett Realty Solutions

$138,000

Sold Oct 3, 2025
- 2 Beds
- 1 Bath
- 1,006 Sq Ft
60 Wheeler Ave

Cortland, NY
- 5% Below List
- $137/SF
- 14 Days On Market
- Current Est. Value $144K
Sean Mack Hartnett Realty Solutions

$695,000

Sold Sep 25, 2025
- 4 Beds
- 4 Baths
- 3,321 Sq Ft
1149 Davinci Dr

Cortland, NY
- $209/SF
- 13 Days On Market
- Current Est. Value $745K
Sean Mack Hartnett Realty Solutions

$41,500

Sold Jun 23, 2025
- Land
- 0.56 Acre Lot
1833 Preble Rd

Unit 1831

Preble, NY
- 17% Below List
- 186 Days On Market
- Current Est. Value $103K
Sean Mack Hartnett Realty Solutions

$150,000

Sold May 21, 2025
- 4 Beds
- 2 Baths
- 2,090 Sq Ft
4 S Franklin St

Cortland, NY
- $72/SF
- 24 Days On Market
- Current Est. Value $170K
Sean Mack Hartnett Realty Solutions

$147,500

Sold May 8, 2024
- 3 Beds
- 1 Bath
- 1,154 Sq Ft
70 Floral Ave

Cortland, NY
- 16% Below List
- $128/SF
- 184 Days On Market
- Current Est. Value $169K
Sean Mack Hartnett Realty Solutions

$150,500

Sold May 3, 2024
- 4 Beds
- 1 Bath
- 1,296 Sq Ft
6 Joseph St

Cortland, NY
- 8% Above List
- $116/SF
- 5 Days On Market
- Current Est. Value $162K
Sean Mack Hartnett Realty Solutions

$50,000

Sold Jan 2, 2024
- 7 Beds
- 4 Baths
- 2,965 Sq Ft
20 S Washington Ave

Oxford, NY
- 17% Below List
- $17/SF
- 9 Days On Market
- Current Est. Value $127K
Sean Mack Hartnett Realty Solutions

Agent License: New York 30MA0531346

Sean Mack

(607) 605-6659

Hartnett Realty Solutions

(607) 605-6659

Homes for Sale by City

Sean Mack

About Sean

Transaction History

Seller Deals

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 Sean is Experienced In

Sean's Listings and Deals

Sean's Active Listings

Recently Sold