John Schlaffer

Sparta NJ

Keller Williams Integrity

133 Closed Sales

$49.3M Total Value

$140K - $1.3M Price Range

$370.7K Average Price

Prior 5 years

About John

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

Years of Experience: 18

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	10
Total Value	$3,420,500
Average Sale Price	$342,050
Price Range	$45K - $725K

Buyer Deals
Total Deals	6
Total Value	$3,731,000
Average Sale Price	$621,833
Price Range	$350K - $933K

1 Year View by Quarter

Seller Deals
Total Deals	30
Total Value	$12,294,000
Average Sale Price	$409,800
Price Range	$45K - $950K

Buyer Deals
Total Deals	14
Total Value	$6,667,500
Average Sale Price	$476,250
Price Range	$95K - $933K

2 Year View by Quarter

Seller Deals
Total Deals	91
Total Value	$33,016,171
Average Sale Price	$362,815
Price Range	$15K - $950K

Buyer Deals
Total Deals	42
Total Value	$16,292,800
Average Sale Price	$387,924
Price Range	$11K - $1.3M

5 Year View

Neighborhoods John is Experienced In

John's Active Listings

$300,000
- 1 Bed
- 2 Baths
5346 Berkshire Valley Rd

Jefferson, NJ
Tucked away in a peaceful wooded setting along the lake, this charming seasonal lakefront retreat offers a rare opportunity to enjoy a relaxing escape surrounded by nature. Designed for simple, comfortable living, the property features a spacious deck, patio, and private dock ideal for kayaking, fishing, swimming, entertaining, or simply enjoying the calm waterfront setting. The deeper 40-foot

John Schlaffer KELLER WILLIAMS INTEGRITY

$635,000
- 4 Beds
- 2.5 Baths
- 2,572 Sq Ft
1 Foley Dr

Newton, NJ
Welcome to this beautifully maintained Colonial-style home, where comfort and everyday living come together in a peaceful, natural setting. Nestled on an open lot with Clearview Lake privileges, this home offers a sense of privacy while still being connected to the surrounding community. Inside, you're greeted by a bright, open two-story foyer layout with warmth and natural light throughout. The

John Schlaffer KELLER WILLIAMS INTEGRITY

$150,000
- Land
- 10 Acres
- $14,940 per Acre
36 Countryside Rd

Knowlton Township, NJ
Discover over ten acres of peaceful, wooded land that offers a quiet and private setting surrounded by natural beauty. This property provides a unique opportunity to create your own retreat where you can enjoy space, serenity, and a true connection to the outdoors. The landscape is filled with mature trees and gentle terrain, creating a calming environment that feels tucked away, yet accessible

John Schlaffer KELLER WILLIAMS INTEGRITY

$420,000
- Land
- 5 Acres
- $82,353 per Acre
6 Hidden Valley Rd

Andover Township, NJ
This is a very rare opportunity to own over five acres of lakefront property with its own island! Yes, this lot has its own island on Hidden Valley Lake in Andover, NJ. This property offers a peaceful, nature-filled lifestyle. This expansive property features a unique setting with lakefront views and a semi-private, wooded landscape on the perimeter of the property that creates a sense of calm

John Schlaffer KELLER WILLIAMS INTEGRITY

$100,000
- Land
- 0.38 Acre
- $263,158 per Acre
3 Wentworth Ct

Hardyston, NJ
Prime vacant land lot located in Crystal Spring, ready for your dream home! Nestled in the Crystal Springs community this exceptional vacant lot offers the perfect opportunity to build your own dream home in one of Sussex County's most sought after locations. With natural gas available in the street and public water and sewer access, this lot is prime for development with convenience and

John Schlaffer KELLER WILLIAMS INTEGRITY

$825,000
- 4 Beds
- 2.5 Baths
- 2,584 Sq Ft
29 Bracken Hill Rd

Hamburg, NJ
Welcome to your future retreat in Crystal Springs where classic design meets the ease of modern living. This newly built home offers the perfect blend of elegance and comfort, nestled in a peaceful corner of one of New Jersey's well-maintained resort communities. Step inside to soaring spaces filled with natural light. The main level invites connection and relaxation, featuring an open-concept

John Schlaffer KELLER WILLIAMS INTEGRITY

$1,350,000
- 8 Beds
- 8 Baths
967 McAfee Glenwood Rd

Vernon Township, NJ
There are properties with notable history, and Fox and Bear Lodge is one of them. Built in 1831 and restored in 2022, this property brings together historic elements and updated interior features. Set on nearly two acres with rolling terrain, mountain views, and a bordering stream, the site offers a natural setting within Vernon Township. Inside, more than four thousand square feet of interior

John Schlaffer KELLER WILLIAMS INTEGRITY

$6,000 per month
- 4 Beds
- 2 Baths
21 Payne Rd

Newton, NJ
LAKEFRONT RENTAL SET ON OVER 9 ACRES in Andover Township, just outside Sparta, NJ. This unique property offers a rare opportunity for a variety of living arrangements. The grounds offer space suitable for agricultural use, gardening, or hobby farming, with a greenhouse and barn structure on site. The property has also been utilized as a short-term rental, and ownership is open to discussing

John Schlaffer KELLER WILLIAMS INTEGRITY

Recently Sold

$45,000

Sold Feb 20, 2026
- Land
- 1.54 Acre Lot
000 Florence Ln

Andover Township, NJ
- 101 Days On Market
John Schlaffer KELLER WILLIAMS INTEGRITY

$545,000

Sold Dec 16, 2025
- 5 Beds
- 2 Baths
37 Rose Morrow Rd

Sussex, NJ
- 28 Days On Market
- Current Est. Value $554K
John Schlaffer KELLER WILLIAMS INTEGRITY

$486,500

Sold Nov 5, 2025
- 3 Beds
- 2 Baths
- 1,224 Sq Ft
35 Skytop Rd

Newton, NJ
- $397/SF
- 7 Days On Market
- Current Est. Value $477K
John Schlaffer KELLER WILLIAMS INTEGRITY

$725,000

Sold Nov 3, 2025
- 4 Beds
- 4 Baths
209 Highland Ave

Hampton Township, NJ
- 34 Days On Market
- Current Est. Value $712K
John Schlaffer KELLER WILLIAMS INTEGRITY

$603,000

Sold Aug 26, 2025
- 4 Beds
- 3 Baths
9 Dunn Place

Sussex, NJ
- 8 Days On Market
- Current Est. Value $614K
John Schlaffer KELLER WILLIAMS INTEGRITY

$450,000

Sold Apr 28, 2025
- 3 Beds
- 1 Bath
- 1,368 Sq Ft
35 Hance St

Wharton, NJ
- $329/SF
- 17 Days On Market
- Current Est. Value $457K
John Schlaffer KELLER WILLIAMS INTEGRITY

$48,000

Sold Apr 8, 2025
- Land
- 1.82 Acre Lot
162 Cork Hill Rd

Franklin, NJ
- 86 Days On Market
- Current Est. Value $57K
John Schlaffer KELLER WILLIAMS INTEGRITY

$150,000

Sold Mar 7, 2025
- 1 Bath
- 576 Sq Ft
1 Sundance Ct

Unit 3

Vernon, NJ
- $260/SF
- 12 Days On Market
- Current Est. Value $223K
John Schlaffer KELLER WILLIAMS INTEGRITY

$105,000

Sold Feb 4, 2025
- Land
999 Breakneck Rd

Vernon Township, NJ
- 0 Days On Market
John Schlaffer KELLER WILLIAMS INTEGRITY

Agent License: New Jersey 10301224573

John Schlaffer

(862) 362-2235

Homes for Sale by City

John Schlaffer

About John

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 John is Experienced In

John's Listings and Deals

John's Active Listings

Recently Sold