2315 Mountain Ranch Road

$4,200,000 2,123 SQ FT
$1,978 SQ/FT

2315 Mountain Ranch Road

@ Hardin Lane - Penngrove, Petaluma

Map direct
  • 2 Bed
  • 2 Bath
  • 10 Park
  • 2,123 sqft
  • Petaluma
  • Payment calculator
DOM
1
SFR
  • Favorite
  • Hide
Message Jennifer Watkins

Hidden behind private gates, this 59-acre legacy estate offers luxury, privacy, and agricultural infrastructure. Anchored by a private lake and a high-producing 25 GPM well, this property represents the ultimate in Sonoma County land ownership. The custom home was constructed in 2006, with its grand entrance and covered front porch. The soaring ceilings with handsome wood beams and light-filled spaces give a sense of refined craftsmanship and impressive scale. The home features a chef's kitchen, a cozy living room with a gas fireplace, and a spacious den/office (with potential for conversion into a third bedroom). The primary suite looks out over the lake and olive orchard, truly stunning! The wrap-around deck offers numerous entertaining areas and is strategically designed to take in the many views the property offers. A fire pit area off the dining room is the perfect place to take in the sunset from the west-facing home. Out back, additional entertaining and dining areas overlook the olive orchard and lake. A custom outdoor kitchen and additional fire pit anchor this space, perfect for hosting gatherings or spending time with the family. Enjoy lazy days paddleboarding on the lake, or just lounging on the dock watching the abundant migratory birds. The detached garage, completely drywalled and nicely finished with a full bath and office, leaves the options wide open as to future use. A rustic yet well-appointed guest cottage with a full bath and private, west-facing back patio adds charm and function. Next to the cottage is a magnificent cork oak tree, estimated to be well over a century old! Its canopy offers the perfect spot to hang a hammock and catch the gentle breezes the region is famous for. Primed for future expansion, a septic system designed for 6 bedrooms was installed when constructed for future growth. This leaves many options to explore build a grand estate home on the lakefront site, expand the existing home, or add an ADU. A large (approx. 1,800 sqft.) concrete slab located near the house offers a variety of uses. The land features a perfect blend of rolling hills and flat acreage, ideal for an equestrian facility or agricultural endeavors. With approx. 12 acres of olive trees and its DA zoning, explore Williamson Act eligibility for significant tax benefits. While the property shares a private road with neighboring estates, there is no restrictive HOA. 2315 Mountain Ranch Road, a truly unique offering with limitless potential.

Days on Market
1 day
Current Status
Active
Original Price
$4,200,000
List Price
$4,200,000
On Market Date
Jun 16, 2026
Property Type
Single Family Residence
Area
Penngrove
Zip Code
94954
MLS ID
326046141
APN
137-040-015-000
Year Built
2006
Stories in Building
Unavailable
Possession
Close Of Escrow
Data Source
BAREIS
Origin MLS System
Bed
2
Bath
2
Parking
10
Detached
SQ FT
2,123
SQ FT Source
Not Verified
Lot SQ FT
2,577,881.0
Lot Acres
59.18 Acres
Cooling
Central
Exterior Details
Fire Pit, Kitchen
Fire Place
Gas Piped
Heating
Central
Laundry
Inside Room
Main Level
Bedroom(s), Dining Room, Family Room, Full Bath(s), Kitchen, Living Room, Primary Bedroom
Views
Mountains, Orchard, Panoramic, Pasture
Possession
Close Of Escrow
Basement
None
Fee
$0

MLS and other Information regarding properties for sale as shown in Theo have been obtained from various sources such as sellers, public records, agents and other third parties. This information may relate to the condition of the property, permitted or unpermitted uses, zoning, square footage, lot size/acreage or other matters affecting value or desirability. Unless otherwise indicated in writing, neither brokers, agents nor Theo have verified, or will verify, such information. If any such information is important to buyer in determining whether to buy, the price to pay or intended use of the property, buyer is urged to conduct their own investigation with qualified professionals, satisfy themselves with respect to that information, and to rely solely on the results of that investigation.

School data provided by GreatSchools. School service boundaries are intended to be used as reference only. To verify enrollment eligibility for a property, contact the school directly.

Listings © 2026 Bay Area Real Estate Information Services Inc

Copyright © 2026 Theo Inc. All Rights Reserved