| Primary address | 306 Portia Avenue, Sunnyvale |
| Zip code | 94086 |
| County | Santa Clara |
| Tract | 945 |
| Parcel ID | 161-39-038 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 07/12/2006 |
| Sale price | $845,000 |
| Arm's length | Register |
| Property tax | $13,280 |
| Building class | Single Family (01) |
| Acreage | 0.154
|
| Zoning district | Low Density Residential (R0) |
| School district | 09002 |
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:
Assessed at $1,132,108, the tax amount paid for 306 Portia Avenue, Sunnyvale, CA 94086 is $13,279.
When was 306 Portia Avenue, Sunnyvale, CA 94086 last sold and what was the last sale price?306 Portia Avenue, Sunnyvale, CA 94086 was last sold in 07/12/2006 for $845,000.
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 306 Portia 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 306 Portia 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 | $13,280 |
| Market value | $1,132,108 |
Here's the assessment & property tax history for 306 Portia 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 | $1,132,108 | 1.173 | $13,280 | +3.78% |
| 2024-2025 | $1,109,910 | 1.1529 | $12,796 | +0.92% |
| 2023-2024 | $1,088,148 | 1.1652 | $12,679 | +1.66% |
| 2022-2023 | $1,066,813 | 1.1691 | $12,472 | +1.13% |
| 2021-2022 | $1,045,896 | 1.1792 | $12,333 | +1.09% |
The complete history of permits filed for 306 Portia 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 306 Portia 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 306 Portia 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) |
|---|---|---|---|---|---|
| Sunnyvale Christian | NR | Private | K-5 | 81 | 0.20 |
| Catholic Academy of Sunnyvale | NR | Private | PK, K-8 | 137 | 0.32 |
| Catholic Academy of Sunnyvale | NR | Private | PK, K-8 | 137 | 0.32 |
| Vargas Elementary School | 4 | Public | K-5 | 411 | 0.32 |
| Stratford School - Sunnyvale Washington Park | NR | Private | PK-5 | 392 | 0.43 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Catholic Academy of Sunnyvale | NR | Private | PK, K-8 | 137 | 0.32 |
| St. Stephen Lutheran School | NR | Private | 1-8 | 13 | 1.02 |
| Sunnyvale Middle School | 6 | Public | 6-8 | 962 | 1.05 |
| Helios School | NR | Private | K-8 | 28 | 1.30 |
| Slater Special Education Preschool | NR | Public | 75 | 1.43 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Slater Special Education Preschool | NR | Public | 75 | 1.43 | |
| Alta Vista High School | 4 | Public | 9-12 | 69 | 1.45 |
| Mountain View High School | 8 | Public | 9-12 | 2,220 | 1.59 |
| Adult And Community Education | NR | Public | 0 | 1.67 | |
| Community Day School | NR | Public | 9-12 | 7 | 1.75 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 306 Portia Avenue, Sunnyvale.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 305 Portia Ave, Sunnyvale | 07/26/1995 | ||
| 164 Encino CT, Sunnyvale | 03/01/2019 | ||
| 1155 Bodega Dr, Sunnyvale | 04/04/2000 | $552,000 | |
| 1061 W Iowa Ave, Sunnyvale | 08/20/2025 | ||
| 1077 Polk Ave, Sunnyvale | 08/30/1996 | $276,000 | |
| 165 Encino CT, Sunnyvale | 09/12/2018 | ||
| 301 Portia Ave, Sunnyvale | 09/05/2023 | $1,800,000 | |
| 302 Portia Ave, Sunnyvale | 05/21/2024 | $2,450,000 | |
| 433 S Mary Ave, Sunnyvale | 33,216 | 01/09/2015 | $6,100,000 |
| 152 Caymus CT, Sunnyvale | 06/12/1997 | ||
| 1041 Polk Ave, Sunnyvale | 11/21/2022 | $2,300,000 | |
| 1055 Polk Ave, Sunnyvale | 09/13/2018 | $1,700,000 | |
| 1171 Crespi Dr, Sunnyvale | 05/20/1999 | ||
| 1014 W McKinley Ave, Sunnyvale | 01/11/2016 | ||
| 1093 W Iowa Ave, Sunnyvale | 06/18/2013 | ||
| 1139 Bodega Dr, Sunnyvale | |||
| 437 S Mary Ave, Sunnyvale | 16,397 | 01/09/2015 | $6,100,000 |
| 312 Portia Ave, Sunnyvale | 06/19/2013 | ||
| 1064 Polk Ave, Sunnyvale | 09/30/2015 | $1,500,000 | |
| 1010 W McKinley Ave, Sunnyvale | 04/26/2012 | $690,000 |