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Jefferson County, WA · Sold

WA-519185

4107 County Road 379

$850,300
$1,566/ac · 543 ac
Acreage543 ac
Price per acre$1,566/ac
ZoningUnzoned
Road accessLandlocked
UtilitiesOff grid
TopographyFlat
ListedAug 24, 2024
Coordinates47.8085, -123.5005
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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

Jefferson County, Washington. Eastern Washington irrigated ground and Cascade foothill lots.

View Jefferson market data →

Step 1 · Is this a deal?

Due diligence

5 items to verify before you offer.

Risk index
68
High risk
Wetlands33.8% of tract

Heavy wetland coverage — assume a delineation and permitting delay.

Average slope3.2%

Gentle grade, straightforward to develop.

Flood zoneAE

Inside the 100-year floodplain — insurance and elevation apply.

Legal accessLandlocked

No legal access of record — resale is severely limited.

Power14,222 ft away

A long utility run — price in solar/off-grid instead.

Buildable area341.51 of 543.02 ac

Net of wetlands and slope constraints.

Step 2 · Where do the numbers land?

Adjusted value estimate
$1,049,107
$774,501$1,323,713 · $1,932/ac on 543 ac
Asking vs estimate
-19.0%
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 $850,300
Maximum allowable offer
$599,490
$1,104/ac · +30.0% target margin

You need $250,810 off asking to hit this margin.

All-in cost$650,447
Net resale$965,179
Projected profit$314,732
ROI+48.4%
Annualized+69.2%
Break-even resale$1,302/ac
Profit if resale lands off target
-20%
$121,696
-10%
$218,214
0%
$314,732
+10%
$411,250
+20%
$507,768
Comparable sales5 matches
ParcelAcresSoldPrice$/acAdj $/acDistMatch
WA-569519
Gravel · Off grid
691.7Jan 2, 2026$1,278,8001,8491,3890.4 mi
82
WA-239860
Paved · Full utilities
885.5Jun 2, 2026$5,311,5005,9982,8225.7 mi
75
WA-858211
Gravel · Power at road
268.1Jul 27, 2026$912,2003,4021,5998.4 mi
72
WA-427935
Gravel · Off grid
219.6Mar 29, 2026$855,3003,8952,0637.6 mi
70
WA-949652
Gravel · Power at road
761.6Jun 18, 2024$1,979,8002,6001,8173.5 mi
68
Show adjustment detail for the top comp
  • Tract size (691.67 ac → 543.02 ac)+7.7%
  • Access (Gravel → Landlocked)-32.0%
  • Market time (7 mo)+2.6%

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.