| Primary address | 492 Castro Street, Mountain View |
| Alternate address(es) | 444 Castro St |
| Zip code | 94041 |
| County | Santa Clara |
| Neighborhood | Old Mountain View |
| Parcel ID | 158-11-058 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Property tax | $988,725 |
| Building sqft | 176,296 |
| Building class | Offices, High-Rise Office Buildings, Banks and Clinics (Category Also Includes Parking for Existing Office Buildings) (59) |
| Acreage | 1.58 |
| Lot sqft | 68,691 |
| Year built | 1973 |
| Stories | 12 |
| Zoning district | Register |
| School district | 05096 |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
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This Offices, High-Rise Office Buildings, Banks and Clinics (Category Also Includes Parking for Existing Office Buildings) (59) located at Mountain Bay Plaza - 492 Castro Street, Mountain View, CA 94041 has a total of 176,296 square feet.
What is the year built & the current market value of Mountain Bay Plaza - 492 Castro Street, Mountain View, CA 94041?Mountain Bay Plaza - 492 Castro Street, Mountain View, CA 94041 was built in 1973 and has a current tax assessor's market value of $85,242,247.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
| Listing type | For Lease |
|---|---|
| Last updated | 05/27/2026 |
| Lot size | 1.58 Acre |
| Suite name | Space type | Lease rate | Available space | Brokers |
|---|---|---|---|---|
| #120 | Retail | Listing price not available | 6,931 | Shelby Swanson |
Create a free account to view the complete sales history for 492 Castro Street, Mountain View, including title documents, transfer conditions, mortgages and liens.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for Mountain Bay Plaza - Mountain Bay Plaza - 492 Castro Street, Mountain View, CA 94041. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax | $988,725 |
| Market value | $85,242,247 |
Here's the assessment & property tax history for 492 Castro Street, Mountain View, including the evolution of the total tax rate and corresponding property tax.
| Year | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|
| 2025-2026 | $85,242,247 | 1.1599 | $988,725 | +2.20% |
| 2024-2025 | $83,570,831 | 1.1576 | $967,416 | +1.04% |
| 2023-2024 | $81,932,189 | 1.1686 | $957,460 | +0.25% |
| 2022-2023 | $80,325,676 | 1.189 | $955,072 | +5.88% |
| 2021-2022 | $76,255,982 | 1.1829 | $902,032 | -0.15% |
The complete history of permits filed for 492 Castro Street, Mountain View, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
| Total population | 16,050 |
| Median age | 34.1 |
| Average household income | $242,642 |
| Family households | 52.6% |
| Occupied housing units | 6,960 |
| Owner occupied units | 28.1% |
| People per household (average) | 2.3 |
| Median year structure built | 1974 |
| Median value for units with a mortgage | $2,000,001 |
| Median value for units without a mortgage | $1,902,800 |
Create a free account to unlock extended information for 492 Castro Street, Mountain View, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
| Fire hazard zone | See more on map |
| Faults and tsunami inundation zone map | Register |
| Landslides and liquefaction map | Register |
Access the detailed traffic volume map for 492 Castro Street, Mountain View to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
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Here are the neighbors for Mountain Bay Plaza - 492 Castro Street, Mountain View.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 725 Cottage CT, Mountain View | 11/07/2016 | ||
| 109 Laurel Way, Mountain View | 08/14/2023 | ||
| 709 Astor CT, Mountain View | 10/17/2003 | $396,500 | |
| 734 Cottage CT, Mountain View | 06/08/2006 | ||
| 743 Cottage CT, Mountain View | 12/02/2019 | $1,290,000 | |
| 727 Cottage CT, Mountain View | 03/30/2004 | $405,000 | |
| 726 Cottage CT, Mountain View | 09/12/2012 | ||
| 702 Astor CT, Mountain View | 12/17/2025 | ||
| 736 Cottage CT, Mountain View | 06/06/2019 | ||
| 748 Cottage CT, Mountain View | 01/29/2026 | $1,150,000 | |
| 705 Astor CT, Mountain View | 11/08/2022 | ||
| 713 Astor CT, Mountain View | 05/25/2007 | $224,000 | |
| 742 Cottage CT, Mountain View | 03/06/2024 | $1,310,000 | |
| 732 Cottage CT, Mountain View | 07/09/2024 | ||
| 510 Rathmore Ln, Mountain View | 07/25/2013 | ||
| 723 Cottage CT, Mountain View | 06/26/2020 | ||
| 113 Laurel Way, Mountain View | |||
| 720 Cottage CT, Mountain View | 02/23/2023 | $1,265,000 | |
| 738 Cottage CT, Mountain View | 04/03/2007 | ||
| 301 E Evelyn Ave, Mountain View | 266,088 | 01/20/2026 | $193,000,000 |