18249 Old Monte Rio Rd is a 894 square foot house on a 0.96 acre lot with 3 bedrooms and 1 bathroom. Based on Redfin's Guerneville data, we estimate the home's value is $523,222.
Single-familyProperty Type
1905Year Built
0.96 acresLot Size
$585Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$523,222
$25K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 5.3% higher than the average sale price ($497K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$2,002 (+6.7%)
$44,397 + $80,588
$124,985
2024
$1,877 (+1.5%)
$43,527 + $79,008
$122,535
2023
$1,849 (+1.7%)
$42,674 + $77,459
$120,133
2022
$1,818 (+0.1%)
$41,838 + $75,941
$117,779
2021
$1,816 (−2.6%)
$41,018 + $74,452
$115,470
2020
$1,864 (+4.0%)
$40,214 + $72,993
$113,207
2019
$1,793 (+1.4%)
$39,802 + $72,245
$112,047
2018
$1,768 (+3.1%)
$39,022 + $70,829
$109,851
2017
$1,715 (+3.5%)
$37,507 + $68,080
$105,587
2015
$1,657 (+1.3%)
$36,772 + $66,746
$103,518
2014
$1,635
$35,511 + $64,457
$99,968
2013
$1,634 (+2.6%)
$35,511 + $64,457
$99,968
2012
$1,593 (+3.3%)
$35,351 + $64,166
$99,517
2011
$1,542 (+0.7%)
$34,658 + $62,908
$97,566
2010
$1,530 (+6.5%)
$33,979 + $61,675
$95,654
2009
$1,437 (+1.4%)
$33,726 + $61,215
$94,941
2007
$1,417
$33,145 + $60,158
$93,303
Tax history for 18249 Old Monte Rio Rd
Year
Property tax
Land + Additions
Assessment*
2025
$2,002 (+6.7%)
$44,397 + $80,588
$124,985
2024
$1,877 (+1.5%)
$43,527 + $79,008
$122,535
2023
$1,849 (+1.7%)
$42,674 + $77,459
$120,133
2022
$1,818 (+0.1%)
$41,838 + $75,941
$117,779
2021
$1,816 (−2.6%)
$41,018 + $74,452
$115,470
2020
$1,864 (+4.0%)
$40,214 + $72,993
$113,207
2019
$1,793 (+1.4%)
$39,802 + $72,245
$112,047
2018
$1,768 (+3.1%)
$39,022 + $70,829
$109,851
2017
$1,715 (+3.5%)
$37,507 + $68,080
$105,587
2015
$1,657 (+1.3%)
$36,772 + $66,746
$103,518
2014
$1,635
$35,511 + $64,457
$99,968
2013
$1,634 (+2.6%)
$35,511 + $64,457
$99,968
2012
$1,593 (+3.3%)
$35,351 + $64,166
$99,517
2011
$1,542 (+0.7%)
$34,658 + $62,908
$97,566
2010
$1,530 (+6.5%)
$33,979 + $61,675
$95,654
2009
$1,437 (+1.4%)
$33,726 + $61,215
$94,941
2007
$1,417
$33,145 + $60,158
$93,303
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jun 11, 2016 • Final
Building permit no plan check
Upgrade the electrical service to 100 amps.
Electrical
Jun 11, 2016 • Final
Demolition
Demolish a garage.
Demolition
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
Interior
Bathroom Information
# of Full Baths: 1
Room Information
# of Rooms: 4
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Poor
Property Information
Subdivision Name: RUSSIAN RIVER HEIGHTS SUB/BL 07
Living Sq. Ft: 894
Building Sq. Ft: 2,175
# of Stories: 2
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 360
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 41,800
Legal Lot Number: 1-7
Legal Block Number: 30
Acres: 0.9596
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 894
Stories: 2.0
Lot Size: 0.96 acres
Style: Single Family Residential
Year Built: 1905
Year Renovated: 1905
County: Sonoma County
APN: 072240011000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Guerneville Elementary School
Charter K-8 • Assigned • 2.1mi
4/10
Analy High School
Public 9-12 • Assigned • 11.4mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
2/10 Heat Factor
7 days above 86° expected this year, 20 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Guerneville, CA • 95446
Average low and high temperatures (°F)
59
40
60
43
69
45
66
45
74
49
78
51
76
51
85
53
80
53
76
49
62
45
57
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.6 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$498,000 – $602,000
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