150 W Sierra Ave, Cotati, CA 94931 Property Records

Sonoma County property record for 150 W Sierra Ave, Cotati, CA 94931

Property Summary

Property Type	Parochial School, Private School
Details	1.5 ba · 1,144 sqft · built 1963
Lot Size	0.241 acres (10,500 sqft)
Owner	Company Name on Record
Last Sale	$220,000 (Jun 2004)
Tax Bill	$4,019 (2025)
Flood Zone	Zone X (minimal risk)
APN	`144-353-008-000`

Property Details

APN / Parcel Number

Primary APN	`144-353-008-000`
Alternative APN	`144-353-008`

Interior

Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	1 Room
Units	2 Units
Stories	1 Story
Building Area	1,144 sqft Gross Area
1st Floor Area	1,144 sqft

Exterior

Year Built	Built 1963
Effective Year Built	Effective 1964
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	10,500 sqft (0.241 acres)

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	144-353-008
Street Address	150 W SIERRA AVE
City	COTATI
State	CA
Zip	94931-5237
Property Category	Other
Property Type	Other > Parochial School, Private School
Local Zoning Code	CITYCO
Legal Subdivision	PLAN OF THE TOWNSITE OF COTATI SUB #6
Legal Block	3
Legal Lot Number	6
Jurisdiction	SONOMA CA
Township / Civil Division	PETALUMA
Census Block Group	3
Census Block	3010
Census Tract	151204

Owner

Source: Sonoma County records, as of September 1, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Company Name on Record
Mailing Address	150 W SIERRA AVE, COTATI, CA 94931-5237
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 11, 2004 · Amount on Record
Deed Sale	Jun 11, 2004 · Amount on Record
Prior Sale	Aug 15, 2003 · Amount on Record
Deed Document Number	200490049
Prior Transfer Date	Jan 28, 2003
Prior Transfer Doc	0000170895
Record Updated	Oct 29, 2026

Tax Assessment & Valuation

Source: Sonoma County assessment roll, as of September 1, 2026

Property Jurisdictions

Type	Name
State	California
County	Sonoma County
Municipality	Cotati City
Unified School District	Cotati-Rohnert Park Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$319,029 (+2%) Land $181,269 Building $137,760
2025	$4,019.00 (+3.08%)	$312,774 (+4.04%) Land $177,715 Building $135,059
2023	$3,899.00 (+1.8%)	$300,630 Land $170,815 Building $129,815
2022	$3,830.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective February 15, 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Low lower than 97% of the US · lower than 97.8% of California
Wildfire Likelihood	0.02% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF COTATI serves 7,290 people · EPA ID CA4910016
Water Source	Groundwater
Last State Inspection	Aug 2024
Lead	Under 1 ppb (2024–2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 321 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL	100 / 20