NOT LISTED FOR SALE

2100 Mountain Ranch Rd Petaluma, CA 94954

Estimated Value: $1,726,000 - $2,286,000

2 Beds
2 Baths
1,847 Sq Ft
$1,094/Sq Ft Est. Value

Last Sold October 21, 2022

Last sale price $2,105,000 $1,140 Per Sq Ft

Est. 4% decrease in value since last sale

Current estimated payment $11,990/month

18 Days on Market

Highlights

  • Barn
  • Second Garage
  • Panoramic View
  • Corona Creek Elementary School Rated A
  • RV Garage
  • Gated Community

About This Home

As of October 2022

2100 Mountain Ranch Road tucked away in the Petaluma countryside. 16.94 acres of privacy and soaring views. This single-level updated farmhouse feels like a brand new home. Enter through the private gate and extensive tree lined driveway. Two bedrooms, office, two bathrooms, and 1847sf. Some of the recent updates include a new Timberline roof, Hardie Cedar Milled siding, three bamboo ​porches​, Jeldwen windows, and wide plank floors. New farmhouse stainless and quartz kitchen with island bar, wood stove, shiplap, and brick accent walls. Multiple out buildings including a 24x30 barn with guest suite and storage. A separate 45x60 steel barn with 18' ceilings awaits your imagination. Wine country alfresco entertaining garden with a bocce ball court, raised garden beds, grill​ing​ bar with refrigerator, and two tiny garden cottages perfect for dining, home office, or art studio. Private and tucked away but just minutes from the towns Petaluma and Penngrove.

Last Agent to Sell the Property

Rob Sullivan

Coldwell Banker Realty License #01259514 Listed on: 09/19/2022

Coldwell Banker Realty

Last Buyer's Agent

James Maloney

Inactive Office License #01440376

Inactive Office

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1980 | Remodeled

Lot Details

  • 16.94 Acre Lot
  • Private Lot
  • Secluded Lot

Parking

  • 3 Car Direct Access Garage
  • 20 Open Parking Spaces
  • Second Garage
  • Garage Door Opener
  • Auto Driveway Gate
  • RV Garage

Property Views

  • Panoramic
  • Vineyard
  • Pasture
  • Hills

Home Design

  • Farmhouse Style Home
  • Side-by-Side
  • Ranch Property
  • Concrete Foundation
  • Composition Roof

Interior Spaces

  • 1,847 Sq Ft Home
  • 1-Story Property
  • Beamed Ceilings
  • Ceiling Fan
  • Wood Burning Stove
  • Wood Burning Fireplace
  • Raised Hearth
  • Living Room with Fireplace
  • Living Room with Attached Deck
  • Dining Room
  • Engineered Wood Flooring

Kitchen

  • Breakfast Area or Nook
  • Free-Standing Gas Range
  • Range Hood
  • Dishwasher
  • Wine Refrigerator
  • Kitchen Island
  • Quartz Countertops
  • Fireplace in Kitchen

Bedrooms and Bathrooms

  • 2 Bedrooms
  • Bathroom on Main Level
  • 2 Full Bathrooms

Laundry

  • Laundry in unit
  • Washer and Dryer Hookup

Home Security

  • Security Gate
  • Carbon Monoxide Detectors
  • Fire and Smoke Detector

Outdoor Features

  • Shed
  • Outbuilding

Additional Homes

  • Separate Entry Quarters

Farming

  • Barn
  • Electricity in Barn
  • Pasture

Utilities

  • Central Heating and Cooling System
  • Heating System Uses Propane
  • Propane
  • Well
  • Septic System
  • Internet Available
  • TV Antenna

Community Details

  • Gated Community

Listing and Financial Details

  • Assessor Parcel Number 137-040-013-000

Home Details

Home Type

Single Family

Year Built

Built in 1980 | Remodeled

Lot Details

16.94 Acres

Parking

3

Listing Details

  • Interior Amenities: Open Beam Ceiling
  • Type: Residential
  • Property Sub Type: Single Family Residence
  • Subtype Description: Detached, Ranchette/Country
  • Directions To Property: Adobe Road or Corona Road to Hardin Lane to Mountain Ranch Road
  • Lot Size Acres: 16.9400
  • Stories: 1
  • Levels: One
  • ArchitecturalStyle: Farmhouse
  • Second Unit Private Entry: Yes
  • Special Features: None

Interior Features

  • Appliances: Dishwasher, Free Standing Gas Range, Free Standing Refrigerator, Hood Over Range, Wine Refrigerator
  • Number Of Fireplaces: 1
  • Bedrooms: 2
  • Full Bathrooms: 2
  • Living Room Features: Deck Attached, Open Beam Ceiling
  • Flooring: Simulated Wood
  • Price Per Square Foot: 1139.69
  • Square Footage: 1847.00
  • Bathrooms: 2
  • Fireplace Features: Kitchen, Living Room, Raised Hearth, Wood Burning, Wood Stove
  • Kitchen Features: Breakfast Area, Island, Quartz Counter
  • Main Level: Bedroom(s), Dining Room, Full Bath(s), Garage, Kitchen, Living Room, Primary Bedroom, Street Entrance

Exterior Features

  • Construction Materials: Wood
  • Foundation: Concrete Perimeter
  • Lot Features: Gated Community, Private, Secluded
  • Property Condition: Updated/Remodeled
  • Roof: Composition
  • Fencing: Partial
  • OtherStructures: Barn(s), Outbuilding, Second Garage, Shed(s), Storage
  • Patio And Porch Features: Uncovered Deck
  • View: Hills, Panoramic, Pasture, Vineyard

Garage/Parking

  • Parking Features: Attached, Covered, Garage Door Opener, Interior Access, RV Access, RV Garage Detached, RV Possible, Side-by-Side
  • Total Parking Spaces: 12.00
  • Garage Spaces: 3.00
  • OpenParkingSpaces: 20.00
  • Driveway/Sidewalks: Gated, Paved Driveway

Utilities

  • Cooling: Ceiling Fan(s), Central
  • Security Features: Carbon Mon Detector, Double Strapped Water Heater, Security Gate, Smoke Detector, Unguarded Gate
  • Sewer: Septic System
  • Utilities: Dish Antenna, Electric, Internet Available, Propane Tank Leased, Public
  • Water Source: Well
  • Heating: Central, Fireplace(s), Propane
  • Laundry Features: Hookups Only, Inside Room

Lot Info

  • Horse Property Features: Barn w/Electricity, Pasture
  • Assessor Parcel Number: 137-040-013-000
  • Lot Size Sq Ft: 737906.00

Building Info

  • Year Built: 1980

Multi Family

  • Second Unit Description: Guest Suite / Office
  • Second Unit Kitchen: Yes
  • Second Unit Occupied: No
  • Second Unit Partial Bathrooms: 0
  • Second Unit Type: Detached

Ownership History

Date Name Owned For Owner Type

Purchase Details

Closed on
Mar 12, 2025
Sold by
Ongaro Dean M and Ongaro Cynthia T
Bought by
Dean M And Cynthia T Ongaro 1993 Trust and Ongaro
Current Estimated Value
$2,020,081

Purchase Details

Listed on
Sep 19, 2022
Closed on
Oct 11, 2022
Sold by
Orion Homes Inc
Bought by
Ongaro Dean M and Ongaro Cynthia T
Seller's Agent
Rob Sullivan
Coldwell Banker Realty
Buyer's Agent
James Maloney
Inactive Office
List Price
$1,895,000
Sold Price
$2,105,000
Premium/Discount to List
$210,000
11.08%
Views
4

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
-1.19%
Original Mortgage
$1,684,000
Interest Rate
5.38%
Mortgage Type
New Conventional
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
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List Price
Sold Price
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Purchase History

Date Buyer Sale Price Title Company
Dean M And Cynthia T Ongaro 1993 Trust -- None Listed On Document
Ongaro Dean M $2,105,000 Old Republic Title
Source: Public Records

Mortgage History

Date Status Borrower Loan Amount
Previous Owner Ongaro Dean M $1,684,000
Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft
10/21/2022 10/21/22 Sold $2,105,000 0.0% $1,140 / Sq Ft
10/07/2022 10/07/22 Pending -- -- --
09/27/2022 09/27/22 Price Changed $2,105,000 +11.1% $1,140 / Sq Ft
09/19/2022 09/19/22 For Sale $1,895,000 -- $1,026 / Sq Ft
Source: Bay Area Real Estate Information Services (BAREIS)

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $14,353 $1,312,442 $525,402 $787,040
2024 $14,353 $1,286,708 $515,100 $771,608
2023 $14,353 $2,105,000 $842,000 $1,263,000
2022 $7,156 $612,538 $308,374 $304,164
2021 $6,974 $600,528 $302,328 $298,200
2020 $7,016 $594,371 $299,228 $295,143
2019 $6,854 $582,717 $293,361 $289,356
2018 $6,547 $571,292 $287,609 $283,683
2017 $6,315 $560,091 $281,970 $278,121
2016 $6,110 $549,110 $276,442 $272,668
2015 $5,960 $540,863 $272,290 $268,573
2014 $5,888 $520,225 $266,957 $253,268
Source: Public Records

Agents Affiliated with this Home

  • Rob Sullivan

    Seller's Agent in 2022

    Rob Sullivan

    Coldwell Banker Realty

    (707) 772-9171

    184 Total Sales

    Rob Sullivan
    Section Image
  • James Maloney

    Buyer's Agent in 2022

    James Maloney

    Inactive Office

    (415) 302-7809

    19 Total Sales

    James Maloney
    Section Image
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Map

Source: Bay Area Real Estate Information Services (BAREIS)

MLS Number: 322086056

Bay Area Real Estate Information Services (BAREIS)

APN: 137-040-013

California Sonoma County Petaluma 94954

2100 Mountain Ranch Rd, Petaluma, CA

Not Listed for Sale

Detached

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Bay Area Real Estate Information Services (BAREIS) Listing information deemed reliable but not guaranteed. Copyright 2026 Bay Area Real Estate Information Services, Inc. All Right Reserved.

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