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Union County, NJ · Sold

NJ-716197

3899 County Road 209

$531,300
$29,832/ac · 17.81 ac
Acreage17.81 ac
Price per acre$29,832/ac
ZoningMixed Use
Road accessDirt
UtilitiesPower at road
TopographySloped
ListedNov 3, 2025
Coordinates40.6517, -74.3638
Loading terrain…
County GIS boundary

We do not yet have an active public ArcGIS connection for this county. Use the official source link to verify the parcel boundary and flood/zoning layers.

County market

Union County, New Jersey. Pinelands restrictions keep supply extremely tight.

View Union market data →

Step 1 · Is this a deal?

Due diligence

2 items to verify before you offer.

Risk index
17
Low risk
Wetlands0.5% of tract

Little to no mapped wetland coverage.

Average slope20.1%

Steep ground — expect meaningful site work to build.

Flood zoneX

Outside the mapped floodplain.

Legal accessDeeded frontage

788 ft of deeded road frontage.

Power164 ft away

Power at or near the road.

Buildable area10.63 of 17.81 ac

Net of wetlands and slope constraints.

Step 2 · Where do the numbers land?

Adjusted value estimate
$673,136
$558,157$788,115 · $37,795/ac on 17.81 ac
Asking vs estimate
-21.1%
Priced below the comp set

Weighted from 5 recorded sales, adjusted for tract size, access, utilities and time since sale. Range width reflects dispersion across the comp set.

AI deal brief

Comps, diligence flags, an offer number and what to ask the seller.

Offer calculatorAsking $531,300
Maximum allowable offer
$384,649
$21,597/ac · +30.0% target margin

You need $146,651 off asking to hit this margin.

All-in cost$417,344
Net resale$619,285
Projected profit$201,941
ROI+48.4%
Annualized+69.2%
Break-even resale$25,471/ac
Profit if resale lands off target
-20%
$78,084
-10%
$140,013
0%
$201,941
+10%
$263,870
+20%
$325,798
Comparable sales5 matches
ParcelAcresSoldPrice$/acAdj $/acDistMatch
NJ-996459
Gravel · Off grid
21.5Jul 27, 2026$879,60040,85642,4334.0 mi
88
NJ-925329
Landlocked · Power at road
9.5Jul 27, 2026$345,60036,37843,3752.1 mi
84
NJ-497869
Landlocked · Power at road
59.8Jul 27, 2026$1,115,60018,65628,9307.3 mi
69
NJ-286471
Landlocked · Off grid
21.7Nov 26, 2023$529,40024,37541,4438.0 mi
66
NJ-997619
Landlocked · Off grid
49.9Dec 10, 2024$772,80015,48729,0768.3 mi
58
Show adjustment detail for the top comp
  • Tract size (21.53 ac → 17.81 ac)+2.4%
  • Access (Gravel → Dirt)-14.0%
  • Utilities (Off grid → Power at road)+17.6%

Step 3 · Market it

Turn this underwriting into a listing

Generate a comp-priced headline, listing description, land-group post and cash-buyer email for this tract — then post it to the investor marketplace.