| Primary address | 983 Helen Avenue, Sunnyvale |
| Zip code | 94086 |
| County | Santa Clara |
| Tract | 2384 |
| Parcel ID | 213-36-023 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Current property tax | $0 |
| Building sqft | 2,764 |
| Building class | Three and Four Family (03) |
| Acreage | 0.19 |
| Lot sqft | 8,442 |
| Units | 4 |
| Year built | 1961 |
| Stories | 2 |
| Zoning district | Medium Density Residential (R3) |
| School district | 09023 |
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).
Create a free account to access valuable data points such as:
983 Helen Avenue, Sunnyvale, CA 94086 was built in 1961 and has a total of 2,764 square feet.
What is the assessed value of 983 Helen Avenue, Sunnyvale, CA 94086 and the property tax paid?Assessed at $624,102, the tax amount paid for 983 Helen Avenue, Sunnyvale, CA 94086 is $7,209.
How many residential units does this building have?This building has 4 residential unit(s).
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 983 Helen Avenue, Sunnyvale, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 983 Helen Avenue, Sunnyvale, CA 94086. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Base tax | $7,210 |
| Current property tax | $0 |
| Market value | $624,102 |
Here's the assessment & property tax history for 983 Helen Avenue, Sunnyvale, 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 | $624,102 | 1.1552 | $7,210 | +1.36% |
| 2024-2025 | $611,866 | 1.1625 | $7,113 | +1.02% |
| 2023-2024 | $599,869 | 1.1738 | $7,041 | +1.76% |
| 2022-2023 | $588,108 | 1.1766 | $6,920 | +0.34% |
| 2021-2022 | $576,577 | 1.196 | $6,896 | +1.85% |
The complete history of permits filed for 983 Helen Avenue, Sunnyvale, 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.
Create a free account to unlock extended information for 983 Helen Avenue, Sunnyvale, 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) | 0.2 (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 983 Helen Avenue, Sunnyvale to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| St. Lawrence Elementary and Middle School | NR | Private | PK-8 | 236 | 0.47 |
| St. Lawrence Elementary and Middle School | NR | Private | PK-8 | 236 | 0.47 |
| Silicon Valley Academy | NR | Private | K-12 | 121 | 0.59 |
| Ponderosa Elementary School | 5 | Public | K-5 | 501 | 0.63 |
| Silicon Valley Academy | NR | Private | PK-8 | 146 | 0.64 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| St. Lawrence Elementary and Middle School | NR | Private | PK-8 | 236 | 0.47 |
| Marian A. Peterson Middle School | 6 | Public | 6-8 | 729 | 0.57 |
| Silicon Valley Academy | NR | Private | K-12 | 121 | 0.59 |
| Silicon Valley Academy | NR | Private | PK-8 | 146 | 0.64 |
| School of Choice | NR | Private | 6-12 | 0 | 0.69 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| New Valley Continuation High School | 3 | Public | 9-12 | 169 | 0.34 |
| Silicon Valley Academy | NR | Private | K-12 | 121 | 0.59 |
| School of Choice | NR | Private | 6-12 | 0 | 0.69 |
| Llatino High School | NR | Private | 9-12 | 0 | 0.95 |
| Santa Clara Community Day | NR | Public | 6-12 | 10 | 1.06 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 983 Helen Avenue, Sunnyvale.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 1008 Helen Ave, Sunnyvale | 2,910 | 06/21/2017 | $1,925,000 |
| 941 Tamarack Ln, Sunnyvale | 17,150 | 02/25/2004 | |
| 966 Helen Ave, Sunnyvale | 4,700 | 03/05/2008 | |
| 982 Helen Ave, Sunnyvale | 2,764 | 09/19/2023 | |
| 1128 Myrtle Dr, Sunnyvale | 05/20/2014 | ||
| 1004 Helen Ave, Sunnyvale | 2,910 | 06/21/2006 | |
| 826 Tamarack Ln, Sunnyvale | 07/14/2021 | ||
| 979 Helen Ave, Sunnyvale | 2,764 | 04/27/2022 | |
| 996 Helen Ave, Sunnyvale | 2,764 | 12/05/2018 | |
| 1101 E El Camino Real, Sunnyvale | 5,650 | 10/21/2022 | $295,500 |
| 1132 Myrtle Dr, Sunnyvale | 06/27/2003 | $425,000 | |
| 1071 E El Camino Real, Sunnyvale | 22,686 | 10/02/1996 | |
| 1085 E El Camino Real, Sunnyvale | 122,426 | 10/17/2017 | $51,133,000 |
| 908 Tamarack Ln, Sunnyvale | 4,700 | 11/18/1998 | |
| 907 Tamarack Ln, Sunnyvale | 3,125 | 12/17/2015 | |
| 1201 Sycamore Trl, Sunnyvale | 6,172 | 10/15/1992 | $900,000 |
| 1114 Myrtle Dr, Sunnyvale | 12/31/2001 | $383,000 | |
| 923 Tamarack Ln, Sunnyvale | 13,996 | 02/24/2021 | |
| 1065 E El Camino Real, Sunnyvale | 2,492 | 07/03/2014 | $1,554,000 |
| 970 Helen Ave, Sunnyvale | 2,764 | 03/09/2023 |