| Primary address | 990 Helen Avenue, Sunnyvale |
| Alternate address(es) | 992 Helen Ave |
| Zip code | 94086 |
| County | Santa Clara |
| Tract | 2384 |
| Parcel ID | 213-35-019 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 12/30/2022 |
| Sale price | $1,800,000 |
| Arm's length | Register |
| Property tax | $21,634 |
| 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:
990 Helen Avenue, Sunnyvale, CA 94086 was built in 1961 and has a total of 2,764 square feet.
What is the assessed value of 990 Helen Avenue, Sunnyvale, CA 94086 and the property tax paid?Assessed at $1,872,720, the tax amount paid for 990 Helen Avenue, Sunnyvale, CA 94086 is $21,633.
When was 990 Helen Avenue, Sunnyvale, CA 94086 last sold and what was the last sale price?990 Helen Avenue, Sunnyvale, CA 94086 was last sold in 12/30/2022 for $1,800,000.
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 990 Helen Avenue, Sunnyvale, including title documents, transfer conditions, mortgages and liens.
*Here are the three most recent sales for this property.
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 990 Helen Avenue, Sunnyvale, CA 94086. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax | $21,634 |
| Market value | $1,872,720 |
Here's the assessment & property tax history for 990 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 | $1,872,720 | 1.1552 | $21,634 | +1.36% |
| 2024-2025 | $1,836,000 | 1.1625 | $21,344 | +1.02% |
| 2023-2024 | $1,800,000 | 1.1738 | $21,128 | +65.45% |
| 2022-2023 | $1,085,359 | 1.1766 | $12,770 | +0.35% |
| 2021-2022 | $1,064,078 | 1.196 | $12,726 | +1.84% |
The complete history of permits filed for 990 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 990 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 990 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 | 0.45 |
| St. Lawrence Elementary and Middle School | NR | Private | PK-8 | 236 | 0.45 |
| Silicon Valley Academy | NR | Private | K-12 | 121 | 0.58 |
| Silicon Valley Academy | NR | Private | PK-8 | 146 | 0.63 |
| Silicon Valley Academy | NR | Private | PK-8 | 146 | 0.63 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| St. Lawrence Elementary and Middle School | NR | Private | PK-8 | 236 | 0.45 |
| Marian A. Peterson Middle School | 6 | Public | 6-8 | 729 | 0.58 |
| Silicon Valley Academy | NR | Private | K-12 | 121 | 0.58 |
| Silicon Valley Academy | NR | Private | PK-8 | 146 | 0.63 |
| School of Choice | NR | Private | 6-12 | 0 | 0.68 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| New Valley Continuation High School | 3 | Public | 9-12 | 169 | 0.31 |
| Silicon Valley Academy | NR | Private | K-12 | 121 | 0.58 |
| School of Choice | NR | Private | 6-12 | 0 | 0.68 |
| Llatino High School | NR | Private | 9-12 | 0 | 0.90 |
| Santa Clara Community Day | NR | Public | 6-12 | 10 | 1.02 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 990 Helen Avenue, Sunnyvale.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 1184 Myrtle Dr, Sunnyvale | 04/18/2013 | ||
| 902 Suntree CT, Sunnyvale | 3,125 | 07/05/2022 | |
| 926 Tamarack Ln, Sunnyvale | 6,400 | 11/25/2025 | |
| 954 Helen Ave, Sunnyvale | 5,180 | 10/01/2025 | |
| 916 Suntree CT, Sunnyvale | 2,803 | 11/18/2014 | |
| 920 Tamarack Ln, Sunnyvale | 4,102 | 12/20/2012 | |
| 1136 Myrtle Dr, Sunnyvale | 04/30/1996 | $225,000 | |
| 974 Helen Ave, Sunnyvale | 2,764 | 01/28/1998 | |
| 901 Suntree CT, Sunnyvale | 2,564 | 07/01/1997 | $370,000 |
| 994 Helen Ave, Sunnyvale | 2,764 | 07/31/2025 | |
| 986 Helen Ave, Sunnyvale | 2,764 | 02/10/2026 | |
| 978 Helen Ave, Sunnyvale | 2,764 | 10/29/2019 | |
| 929 Tamarack Ln, Sunnyvale | 13,608 | 02/24/2021 | |
| 947 Tamarack Ln, Sunnyvale | 4,004 | 02/25/2004 | |
| 1012 Helen Ave, Sunnyvale | 2,910 | 02/07/2011 | |
| 902 Tamarack Ln, Sunnyvale | 4,554 | 03/13/2017 | |
| 1196 Myrtle Dr, Sunnyvale | 09/11/2006 | $59,000 | |
| 1190 Myrtle Dr, Sunnyvale | 01/07/2022 | $1,655,000 | |
| 849 Sweetbay Dr, Sunnyvale | 06/03/1997 | ||
| 914 Tamarack Ln, Sunnyvale | 3,596 | 10/05/2000 |