John Schlaffer Real Estate Agent - Keller Williams Integrity

168 Fredon Marksboro Rd, Newton, NJ For Sale $585,000 - listed by John Schlaffer — For Sale $585,000

John Schlaffer listing agent for 1 Foley Dr, Newton, NJ - sold for $645,000 — Sold $645,000

21 Payne Rd, Newton, NJ For Rent $5,200/month - listed by John Schlaffer — For Rent $5,200/month

66 Wood Duck Ct Unit 185, Hackettstown, NJ Pending $325,000 - listed by John Schlaffer — Pending $325,000

John Schlaffer buyer's agent for 19 Colonial Cir, Glenwood, NJ - sold for $640,000 — Sold $640,000

John Schlaffer

Sparta NJ

Keller Williams Integrity

137 Closed Sales

$52.3M Total Value

$140K - $1.3M Price Range

$381.6K 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	12
Total Value	$6,072,500
Average Sale Price	$506,042
Price Range	$45K - $1.3M

Buyer Deals
Total Deals	5
Total Value	$2,162,500
Average Sale Price	$432,500
Price Range	$183K - $640K

1 Year View by Quarter

Seller Deals
Total Deals	32
Total Value	$13,928,000
Average Sale Price	$435,250
Price Range	$45K - $1.3M

Buyer Deals
Total Deals	14
Total Value	$6,947,500
Average Sale Price	$496,250
Price Range	$95K - $933K

2 Year View by Quarter

Seller Deals
Total Deals	94
Total Value	$35,426,171
Average Sale Price	$376,874
Price Range	$15K - $1.3M

Buyer Deals
Total Deals	43
Total Value	$16,853,900
Average Sale Price	$391,951
Price Range	$11K - $1.3M

5 Year View

John's Listings and Deals

John's Recent Active Listings

$585,000
- 4 Beds
- 2.5 Baths
168 Fredon Marksboro Rd

Newton, NJ
Imagine coming home to nearly four acres of open space, rolling green hills, beautiful views, and a little more peace and quiet at the end of the day. Set on 3.74 acres in Fredon, this spacious 4 bedroom Colonial offers a setting where mornings can begin with coffee on the Trex deck, evenings can be spent around the wood-burning fireplace, and there is room to simply slow down and enjoy the

John Schlaffer KELLER WILLIAMS INTEGRITY

$1,290,000
- 5 Beds
- 4.5 Baths
- 3,957 Sq Ft
539 S Beverwyck Rd

Parsippany, NJ
Some homes are built. Others are lovingly preserved. Originally crafted in 1900 and carefully restored to match the original craftsmanship in every detail of the home. This extraordinary colonial tells a story more than a century in the making. Every renovation was completed with respect for its architectural heritage while embracing the comforts of modern living. A hand-carved front door crafted

John Schlaffer KELLER WILLIAMS INTEGRITY

$1,795,000
- 5 Beds
- 8 Baths
- 5,800 Sq Ft
60 Morgan Dr

Sparta, NJ
Set on nearly four private acres, this exceptional custom residence offers a rare blend of luxury, privacy, and natural beauty.Overlooking a private pond complete with a dock and tranquil water views, this remarkable property delivers an extraordinary lifestyle in a picturesque Sparta setting.A grand two story foyer welcomes you into beautifully appointed interiors where sunlight pours through

John Schlaffer KELLER WILLIAMS INTEGRITY

$275,000
- 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

$125,000
- Land
- 10 Acres
- $12,450 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

$410,000
- Land
- 5 Acres
- $80,392 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

$325,000

Pending
- 2 Beds
- 1.5 Baths
66 Wood Duck Ct

Unit 185

Hackettstown, NJ
Imagine spending your weekends by the pool, on the golf course, or instead of mowing the lawn or shoveling snow. Welcome to easy living in Panther Valley. Within this gated community, this beautifully maintained multi-level townhome offers the perfect blend of comfort, convenience, and low-maintenance living. Hardwood floors welcome you into the spacious living room, while the renovated eat-in

John Schlaffer KELLER WILLIAMS INTEGRITY

$575,000

Pending
- 3 Beds
- 2 Baths
397 W Shore Trail

Sparta, NJ
Imagine beginning each day with the lake just across the street and ending each evening on a welcoming front porch swing. Nestled behind the gates of Lake Mohawk, this timeless custom home blends historic craftsmanship with thoughtful modern updates. From morning coffee on the inviting front porch swing to evenings gathered around the fieldstone wood-burning fireplace, every space was designed to

John Schlaffer KELLER WILLIAMS INTEGRITY

$5,200 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 home is currently furnished, with the option for a furnished or unfurnished lease depending on

John Schlaffer KELLER WILLIAMS INTEGRITY

Recently Sold

$95,000

Sold Aug 21, 2026
- Land
- 0.38 Acres Lot
3 Wentworth Ct

Hardyston, NJ
- 14% Below List
- 91 Days On Market
John Schlaffer KELLER WILLIAMS INTEGRITY

$645,000

Sold Aug 14, 2026
- 4 Beds
- 3 Baths
- 2,918 Sq Ft
1 Foley Dr

Newton, NJ
- 2% Above List
- 11 Days On Market
- $221/SF
- Current Est. Value $632K
John Schlaffer KELLER WILLIAMS INTEGRITY

$795,000

Sold Aug 13, 2026
- 4 Beds
- 3 Baths
- 2,584 Sq Ft
29 Bracken Hill Rd

Hamburg, NJ
- 4% Below List
- 51 Days On Market
- $308/SF
- Current Est. Value $809K
John Schlaffer KELLER WILLIAMS INTEGRITY

$465,000

Sold Aug 7, 2026
- 3 Beds
- 3 Baths
- 1,792 Sq Ft
13 Valley Dr N

Glenwood, NJ
- 3% Above List
- 25 Days On Market
- $259/SF
- Current Est. Value $489K
John Schlaffer KELLER WILLIAMS INTEGRITY

$1,300,000

Sold Jul 1, 2026
- 4,135 Sq Ft
967 McAfee Glenwood Rd

Vernon Township, NJ
- 98 Days On Market
- $314/SF
John Schlaffer KELLER WILLIAMS INTEGRITY

$45,000

Sold Feb 20, 2026
- Land
- 1.54 Acres 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 $558K
John Schlaffer KELLER WILLIAMS INTEGRITY

$486,500

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

Newton, NJ
- 7 Days On Market
- $397/SF
- Current Est. Value $485K
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 $734K
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

John's Listings and Deals

John's Recent Active Listings

Recently Sold