Duncan Rd, Monte Rio, CA Property Records

Sonoma County property records for 18 addresses on Duncan Rd, Monte Rio, CA · Last verified August 2026

Duncan Rd Highlights

Properties 18
Median Sale Price $395,000
Deeds and Mortgages on File 19
Median Price per Sqft $422
Owner Occupied 28%
Median Annual Tax Bill $3,541
Median Year Built 1949
Median Ownership Tenure 14 years

Properties on Duncan Rd

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

19801 Duncan Rd

40 acres

Last Sale Tax Bill Prior Sale Owner Records
$530,000Apr 2019 $6,8152025 Amount on Record Apr 2008 1 Name on Record Assessor + 1 DocumentUpdated May 2026

21554 Duncan Rd

1 bd · 1 ba · 1,096 sqft · 4.36 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,2752025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

21555 Duncan Rd

2 bd · 1 ba · 888 sqft · 1.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$175,000Oct 1996 $3,5412025 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated May 2026

21564 Duncan Rd

4.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$17,000Aug 1990 $1,4242025 1 Name on Record AssessorUpdated Aug 2026

21565 Duncan Rd

2 bd · 2 ba · 1,447 sqft · 11.3 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2002 $8,3542025 Amount on Record Oct 1994 1 Name on Record AssessorUpdated Apr 2026

21670 Duncan Rd

1 bd · 1 ba · 478 sqft · 0.386 acres

Last Sale Tax Bill Prior Sale Owner Records
$202,000Oct 2012 $3,3322025 Amount on Record Mar 2005 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

21834 Duncan Rd, #A

1 bd · 1 ba · 2,067 sqft · 0.257 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$118,000Jul 1991 $5,6552025 1 Name on Record Assessor + 2 DocumentsUpdated May 2026

21844 Duncan Rd

0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$395,000Jul 2018 $3872025 Amount on Record Jul 1991 1 Name on Record Assessor + 2 DocumentsUpdated May 2026

21850 Duncan Rd

2 bd · 1 ba · 1,295 sqft · 0.069 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,1002025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

21856 Duncan Rd

0.163 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated May 2026

21914 Duncan Rd

1 bd · 1 ba · 1,029 sqft · 0.227 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,0052025 1 Name on Record Owner Occupied AssessorUpdated Apr 2026

21920 Duncan Rd

2 bd · 2 ba · 594 sqft · 0.088 acres · Pool

Last Sale Tax Bill Prior Sale Owner Records
$547,000Jul 2022 $6,9582025 Amount on Record Dec 2017 1 Name on Record Assessor + 3 DocumentsUpdated May 2026

21930 Duncan Rd

2 bd · 2 ba · 750 sqft · 0.254 acres

Last Sale Tax Bill Prior Sale Owner Records
$305,000Apr 2004 $6,0632025 Amount on Record Aug 2001 1 Name on Record Assessor + 1 DocumentUpdated Oct 2025

21943 Duncan Rd

1 ba · 759 sqft · 0.239 acres

Last Sale Tax Bill Prior Sale Owner Records
$7912025 1 Name on Record AssessorUpdated Apr 2026

21950 Duncan Rd

1 ba · 504 sqft · 0.222 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Apr 2026

21955 Duncan Rd

1 bd · 1 ba · 828 sqft · 0.151 acres

Last Sale Tax Bill Prior Sale Owner Records
$454,500Nov 2021 $5,9952025 2 Names on Record Assessor + 3 DocumentsUpdated Aug 2026

21960 Duncan Rd

0.104 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Apr 2026

21970 Duncan Rd

0.076 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Apr 2026

Wildfire Risk on Duncan Rd

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire Risk to HomesModerate
this street's cells rank at the 47th percentile of exposed land nationally · 27th in California
Wildfire LikelihoodModerate — about 1 in 1,256 per year
ExposureDirect
5 of 5 cells directly exposed · 5 adjoin burnable vegetation

Property Records in Nearby Streets