Hidden behind a private gate, 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.
Single-familyProperty Type
2006Year Built
59.18 acresLot Size
$1,743Price/Sq.Ft.
2 garage spacesParking
Listed by Anthony Gozzarino•DRE #01932929• Compass
•707-318-2127 (agent)
•teamgozzarino@gmail.com (agent)
Bought with Lyn Cobb•DRE #01332535• Coldwell Banker Realty
Est. $3,543 per month, based on comparable rentals
Sale and tax history for 2315 Mountain Ranch Rd
Sale History
Tax History
Date
Event
Price
BAREIS #326046141
Oct 22, 2026
Sold
$3,700,000
$1,743/sq ft
Oct 19, 2026
Pending
—
Aug 27, 2026
Contingent
—
Jun 16, 2026
Listed
$4,200,000
$1,978/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$11,596 (+4.3%)
$506,375 + $442,288
$948,663
2024
$11,117 (+1.9%)
$496,447 + $433,616
$930,063
2023
$10,913 (+1.4%)
$486,713 + $425,114
$911,827
2022
$10,757 (+9.7%)
$477,170 + $416,779
$893,949
2021
$9,809 (−0.7%)
$467,814 + $408,607
$876,421
2020
$9,874 (+2.4%)
$458,642 + $400,596
$859,238
2019
$9,643 (+3.5%)
$453,940 + $396,489
$850,429
2018
$9,316 (+3.7%)
$445,040 + $388,715
$833,755
2017
$8,983 (+5.9%)
$427,759 + $373,622
$801,381
2015
$8,481 (+1.2%)
$419,372 + $366,297
$785,669
2014
$8,377 (+3.1%)
$404,982 + $353,728
$758,710
2013
$8,127 (+1.9%)
$404,982 + $353,728
$758,710
2012
$7,972 (+2.0%)
$403,152 + $352,130
$755,282
2011
$7,817 (+1.1%)
$395,248 + $345,226
$740,474
2010
$7,733 (−0.1%)
$387,499 + $338,457
$725,956
2009
$7,743 (+2.0%)
$384,603 + $335,928
$720,531
2007
$7,593
$377,958 + $326,685
$704,643
Public record
Public record
Permits
Beds
2
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
59.18 Acres
Year renovated
2006
Sq. Ft.
2,981
Year built
2006
Style
Single Family Residential
County
Sonoma County
APN
137040015000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 30, 2026.
Jun 11, 2016 • Final
Agricultural exemption
ADU
Electrical
Jun 11, 2016 • Final
Building permit no plan check
ADU
Electrical
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking & Garage Information
Parking Total: 10
Parking Features: Detached
Garage Spaces: 2
Interior
Bathroom Information
# of Bathrooms (Total): 2
# of Bathrooms (Full): 2
Bedroom Information
# of Bedrooms (Total): 2
Heating & Cooling
Cooling: Central
Heating: Central
Interior Features
Fireplaces Total: 1
Fireplace Features: Gas Piped
Interior Features: Open Beam Ceiling
Laundry Features: Inside Room
# of Stories: 1
Room Information
Basement: None
Levels: One
Main Level: Bedroom(s), Dining Room, Family Room, Full Bath(s), Kitchen, Living Room
Exterior
Exterior Features
Patio And Porch Features: Front Porch
Allows Horses: Yes
Horse Amenities: Pasture, See Remarks
Exterior Features: Fire Pit, Kitchen
Pool Information
Has Private Pool: No
Has Spa: Yes
Spa Features: Spa/Hot Tub Personal
Property Information
ADU 2nd Unit: No
Property Type: Residential
Property Sub Type: Single Family Residence
Lot Information
Lot Size Square Feet: 2,577,881
Lot Size Acres: 59.18
Lot Size Source: Assessor Auto-Fill
Lot Features: Pond Year Round, Private, Secluded, See Remarks
Power Production Information
Type: None
Size: 0.00
Year Install: 0
Utilities
Utilities Information
Sewer: Septic System
Location
HOA Information
Association YN: No
Location Information
Area: Penngrove
Community Information
Senior Community: No
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 2,981
Stories: 1.0
Lot Size: 59.18 acres
Style: Single Family Residential
Year Built: 2006
Year Renovated: 2006
County: Sonoma County
APN: 137040015000
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
Corona Creek Elementary School
Public K-6 • Assigned • 1.9mi
7/10
Kenilworth Junior High School
Public 7-8 • Assigned • 1.8mi
6/10
Casa Grande High School
Public 9-12 • Assigned • 4.4mi
8/10
Provided by GreatSchools
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
4/10 Fire Factor
0.93% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 93° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
20 unhealthy days expected this year, 20 days in 30 years
Provided by First Street
Historical weather
Petaluma, CA • 94954
Average low and high temperatures (°F)
60
41
62
44
69
47
67
47
73
50
77
52
80
54
84
55
81
57
73
51
64
46
56
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
96/ 100
Exceptional sunlight
Sunscore
This home ranks in the top 9% for direct sun exposure in Petaluma. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.6 hrs
5.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.27M – $3.96M
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