Extraordinary LAKEFRONT ESTATE & POSSIBLE LUXURY COUNTRY INN / BOUTIQUE B&B / PRIVATE RETREAT LODGING. Potential Bed & Breakfast use subject to Sparta Township Zoning Use Variance approval. Located just 60 minutes from NYC with breathtaking natural surroundings. A magnificent two-story foyer with dramatic butterfly staircase opens to a spectacular great room with soaring ceilings and a wall of windows showcasing panoramic lake and estate views. This GREEN ENERGY ESTATE features an exceptional energy infrastructure, OWNED 41.58 kW ground-mounted solar array with 126 panels. A TRUE GREEN-ENERGY system that pays 99% of the utilities, including charging 3 Teslas, heating the pool and returned a financial payment to the seller for unused energy credits sold in 2025. The gourmet chef's kitchen (fueled with propane gas) offers premium appliances, custom cabinetry and an expansive island. Formal dining room, huge great room overlooking the patio, pool, outdoor wood-burning pizza oven and outdoor kitchen, billiards room, media lounge and private office provide exceptional living and entertaining spaces. An elevator offers convenient access throughout. The upper level features a luxurious primary suite, en-suite bedrooms and fitness center. The finished lower level includes a second kitchenette, theater, custom bar, guest accommodations and storage. A truly one-of-a-kind lakefront estate combining luxury, privacy and energy efficiency.
Extraordinary LAKEFRONT ESTATE & POSSIBLE LUXURY COUNTRY INN / BOUTIQUE Bed & Breakfast / PRIVATE RETREAT LODGING. Potential Bed & Breakfast use subject to Sparta Township Zoning Use Variance approval. Located just 60 minutes from NYC with breathtaking natural surroundings. A magnificent two-story foyer with dramatic butterfly staircase opens to a spectacular great room with soaring ceilings and a wall of windows showcasing panoramic lake and estate views. This GREEN ENERGY ESTATE features an exceptional energy infrastructure, OWNED 41.58 kW ground-mounted solar array with 126 panels. A TRUE GREEN-ENERGY system that pays 99% of the utilities, including charging 3 Teslas, heating the pool and returned a financial payment to the seller for unused energy credits sold in 2025. The gourmet chef's kitchen (fueled with propane gas) offers premium appliances, custom cabinetry and an expansive island. Formal dining room, huge great room overlooking the patio, pool, outdoor wood-burning pizza oven and outdoor kitchen, billiards room, media lounge and private office provide exceptional living and entertaining spaces. An elevator offers convenient access throughout. The upper level features a luxurious primary suite, en-suite bedrooms and fitness center. The finished lower level includes a second kitchenette, theater, custom bar, guest accommodations and storage. A truly one-of-a-kind lakefront estate combining luxury, privacy and energy efficiency.
GSMLS #4037136
Jun 26, 2026
Listed
$2,988,000
$312/sq ft
NJMLS #25038682
Dec 26, 2025
Price Changed
$2,988,000
$312/sq ft
Nov 5, 2025
Listed
$3,248,000
$339/sq ft
NJMLS #2
Sep 22, 2016
Price Changed
$1,895,000
$198/sq ft
Aug 22, 2016
Price Changed
$1,975,000
$206/sq ft
Jul 14, 2016
Price Changed
$1,998,000
$208/sq ft
GSMLS #2734854
Apr 2, 2010
Sold
$1,500,000
$157/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$61,560 (+2.2%)
$223,000 + $1,455,300
$1,678,300
2024
$60,234 (+3.0%)
$223,000 + $1,455,300
$1,678,300
2023
$58,506 (+7.0%)
$223,000 + $1,455,300
$1,678,300
2022
$54,677 (+26.0%)
$223,000 + $1,455,300
$1,678,300
2013
$43,405 (+4.6%)
$135,000 + $1,024,000
$1,159,000
2012
$41,502 (+4.0%)
$135,000 + $1,024,000
$1,159,000
2011
$39,912 (+7.4%)
$135,000 + $1,000,800
$1,135,800
2010
$37,152 (+4.7%)
$135,000 + $1,000,800
$1,135,800
2009
$35,482
$135,000 + $1,000,800
$1,135,800
Public record
Beds
—
Baths
—
Stories
—
Lot width
—
Lot depth
—
Lot size
14.5 Acres
Year renovated
—
Finished Sq. Ft.
9,583
Unfinished Sq. Ft.
—
Total Sq. Ft.
9,583
Year built
2005
Style
Single Family Residential
County
Sussex County
APN
1801001 00089
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 9, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
7 days above 94° expected this year, 15 days in 30 years
4/10 Wind Factor
17% chance of strong winds in next 30 years
2/10 Air Factor
2 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Sparta, NJ • 07871-3029
Average low and high temperatures (°F)
30
18
35
21
53
33
61
41
68
50
79
61
83
66
79
59
75
56
64
44
50
36
35
23
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
20/ 100
Low sunlight
Sunscore
There appears to be significant shading by surrounding buildings, terrain, and vegetation.
3.1 hrs
0.6 hr
JuneDecember
Provided by Shadowmap
Redfin Estimate for 305 Green Rd
$2,764,477
$224K under list price of $2.99M
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $475K to $1.2M.