518 Sierra Ave, Mountain View, CA 94041 Property Records

Santa Clara County property record for 518 Sierra Ave, Mountain View, CA 94041

Property Summary

Property Type	Single Family Home
Details	2 bd · 1.5 ba · 1,279 sqft · built 1939
Lot Size	0.117 acres (5,100 sqft)
Owner	2 Individual Names on Record
Last Sale	$2,250,000 (May 2019)
Tax Bill	$29,357 (2025)
Deeds & Mortgages	Apr 2020 Mortgage Oct 2021 Mortgage
Flood Zone	Zone X (reduced by levee)
APN	`158-09-023`

Property Details

APN / Parcel Number

Primary APN	`158-09-023`

Interior

Bedrooms	2 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,279 sqft Living Area
1st Floor Area	1,279 sqft

Exterior

Year Built	Built 1939
Effective Year Built	Effective 1939
Architectural Style	H-Shape
Construction Type	Wood
Lot Area	5,100 sqft (0.117 acres)
Lot Dimensions	100 ft deep x 51 ft wide
Garage Area	304 sqft
Parking Spaces	1 Parking Space
Porch	None

Utilities, Heating & Cooling

Heating System	HVAC

Location & Zoning

Street Address	518 SIERRA AVE
City	MOUNTAIN VIEW
State	CA
Zip	94041-2145
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	LOT 42
Legal Subdivision	NELSON MANOR
Legal Lot Number	42
Jurisdiction	SANTA CLARA CA
Township / Civil Division	SAN JOSE
Census Block Group	1
Census Block	1008
Census Tract	509600

Owner

Source: Santa Clara County records, as of July 27, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	518 SIERRA AVE, MOUNTAIN VIEW, CA 94041-2145
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 22, 2020	Deed of Trust, Mortgage · Conventional Mortgage CITIBANK NA
Oct 21, 2021	Deed of Trust, Mortgage · Conventional Mortgage CITIBANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 13, 2019 · Amount on Record
Deed Sale	May 13, 2019 · Amount on Record
Prior Sale	Jun 18, 1998 · Amount on Record
Deed Document Number	201924177782
Prior Transfer Date	Jul 16, 1996
Prior Transfer Doc	0013484480
Record Updated	Oct 29, 2026

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SANTA CLARA CA
Property Address	518 SIERRA AVE, MOUNTAIN VIEW, CA 94041-2145
Transaction Type	Mortgage
Record Updated	Dec 7, 2021
Title Company	MORTGAGE CONNECT

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0024460692
Date	Apr 22, 2020
Instrument	24460692

Lender

Name	CITIBANK NA
Type	Bank
Address	O FALLON, MO 63368

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2050

October 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SANTA CLARA CA
Property Address	518 SIERRA AVE, MOUNTAIN VIEW, CA 94041-2145
Transaction Type	Mortgage
Record Updated	Dec 7, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	518 SIERRA AVE, MOUNTAIN VIEW, CA 94041-2145

Mortgage

Document Number	0025139534
Date	Oct 21, 2021
Instrument	25139534

Lender

Name	CITIBANK NA
Type	Bank
Address	O FALLON, MO 63368

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2051

Tax Assessment & Valuation

Source: Santa Clara County assessment roll, as of July 27, 2026

Property Jurisdictions

Type	Name
State	California
County	Santa Clara County
Municipality	Mountain View City
Elementary School District	Mountain View Whisman Elementary School District (KG - 08)
Secondary School District	Mountain View-Los Altos Union School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$2,560,109 (+2%) Land $2,304,101 Building $256,008
2025	$29,357.00 (+3.26%) Homeowner's exemption	$2,509,912 (+4.04%) Land $2,258,923 Building $250,989
2023	$28,430.00 (+0.27%) Homeowner's exemption	$2,412,451 Land $2,171,207 Building $241,244
2022	$28,354.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective January 18, 2026

FEMA Flood Zone	Zone X reduced by levee · depends on levee performance
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	Not rated no burnable land within 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 MOUNTAIN VIEW serves 81,340 people · EPA ID CA4310007
Water Source	Purchased surface water from several systems
Last State Inspection	Feb 2025
Lead	Under 1 ppb (2023–2025) 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 736 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 2,000
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
Ridge Wireless Fixed Wireless	100 / 60
T-Mobile Fixed Wireless	100 / 20

May also be available: Cruzio, GeoLinks.

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