Santa Clara County property record for 660 Sierra Ave, Mountain View, CA 94041
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,390 sqft · built 1941 |
| Lot Size | 0.117 acres (5,100 sqft) |
| Owner | Company Name on File |
| Last Sale | $300,000 (Mar 1994) |
| Tax Bill | $6,175 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 158-09-033 |
| Primary APN | 158-09-033 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,390 sqft Living Area |
| 1st Floor Area | 1,390 sqft |
| Utility Room | Utility Room |
| Year Built | Built 1941 |
|---|---|
| Effective Year Built | Effective 1941 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 5,100 sqft (0.117 acres) |
| Lot Dimensions | 100 ft deep x 51 ft wide |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | None |
| Heating System | HVAC |
|---|
| Street Address | 660 SIERRA AVE |
|---|---|
| City | MOUNTAIN VIEW |
| State | CA |
| Zip | 94041-2147 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT 74 |
| Legal Subdivision | NELSON MANOR |
| Legal Lot Number | 74 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 509600 |
Source: Santa Clara County assessment roll, 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 | Company Name on File |
|---|---|
| Mailing Address | 660 SIERRA AVE, MOUNTAIN VIEW, CA 94041-2147 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Mar 31, 1994 · Amount on Record |
| Deed Sale | Mar 31, 1994 · Amount on Record |
| Deed Document Number | 199412428674 |
| Deed Book / Page | 376 / 116 |
| Last Transfer Date | Oct 1, 2008 |
| Transfer Doc | 0020042394 |
| Record Updated | Sep 20, 2026 |
Source: Santa Clara County assessment roll, as of July 27, 2026
| 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $520,071 (+2%) Land $329,385 Building $190,686 | |
| 2025 | $6,175.00 (+3.52%) Homeowner's exemption | $509,875 (+4.04%) Land $322,927 Building $186,948 |
| 2023 | $5,965.00 (+0.32%) Homeowner's exemption | $490,079 Land $310,389 Building $179,690 |
| 2022 | $5,946.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective January 18, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 |
| 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.
Source: FCC Broadband Data Collection, based on 538 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 · Fiber in parts of the area | 2,000 / 2,000 |
| Etheric Communications, LLC. Fixed Wireless | 250 / 100 |
| Ridge Wireless Fixed Wireless | 100 / 60 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: California Internet, Cruzio Internet, Radiate Holdings, Verizon.
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