Skip to content
Skip to content
TopHapOpen in map
Residential - Vacant LandResidential

15435 MONTE ROSA AVE

UNINCORP COUNTY, CA
0
Baths
0.7 ac
Lot SizeThe size of the land the home sits on, from county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$307 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$4,357 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,357
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$4,272

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.41
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
82
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential - Vacant Land
CountySONOMA
Lot (acres)The size of the land the home sits on, from county records.0.70
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Guerneville Elementary (Charter)C-
Elementary · Grades KG–8 · 1.6 mi
H
Analy High SchoolA-
High · Grades 9–12 · 12.6 mi

District: Guerneville Elementary School District

Owner Tools

Do you own this home?
Claim this home

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

15435 Monte Rosa Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Has a bigger lot than 81% of homes in Sonoma County

How it measures up in Sonoma County

The dot is this home. The mark in the middle is the typical home in Sonoma County.

Lot size0.7 ac
SmallerTypical 0.17 acBigger

Bigger than 81% of homes nearby

How 15435 Monte Rosa Ave ranks against every home in each area.
MeasureThis homeSonoma County
Lot sizebigger than0.7 ac81% of homes

About 15435 Monte Rosa Ave

When did 15435 Monte Rosa Ave, Unincorp County, CA last sell?

15435 Monte Rosa Ave, Unincorp County, CA last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 15435 Monte Rosa Ave, Unincorp County, CA?

15435 Monte Rosa Ave, Unincorp County, CA is assigned to Guerneville Elementary (Charter) (elementary), rated C-; Analy High School (high), rated A-. All sit in Guerneville Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

What are the property taxes on 15435 Monte Rosa Ave, Unincorp County, CA?

The 2025 property tax bill for 15435 Monte Rosa Ave, Unincorp County, CA was $307. The county assessed it at $4,357.

More homes on Monte Rosa Ave

Closest homes

Assigned schools

Explore the area

See this home in context

Open 15435 Monte Rosa Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map