Santa Clara County property record for 21530 Rainbow Dr, Cupertino, CA 95014
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,695 sqft · built 1949 |
| Lot Size | 0.435 acres (18,928 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $3,410 (2025) |
| Flood Zone | Zone D (undetermined) |
| APN | 366-38-021 |
| Primary APN | 366-38-021 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,695 sqft Living Area |
| Gross Area | 2,054 sqft |
| 1st Floor Area | 2,054 sqft |
| Family Room | Family Room |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1969 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 18,928 sqft (0.435 acres) |
| Lot Dimensions | 112 ft deep x 169 ft wide |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | None |
| Heating System | HVAC |
|---|
| Street Address | 21530 RAINBOW DR |
|---|---|
| City | CUPERTINO |
| State | CA |
| Zip | 95014-4817 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A1-10 |
| Legal Description | LOT 1 |
| Legal Lot Number | 1 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 507702 |
21530 Rainbow Dr is owner-occupied and held in a trust since April 1997.
Source: Santa Clara County records, as of July 27, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 21530 RAINBOW DR, CUPERTINO, CA 95014-4817 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Apr 17, 1997 |
| Transfer Doc | 0013693099 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 21530 Rainbow Dr was $3,410.
Source: Santa Clara County assessment roll, as of July 27, 2026
| Type | Name |
|---|---|
| State | California |
| County | Santa Clara County |
| Municipality | Cupertino City |
| Elementary School District | Cupertino Union Elementary School District (KG - 08) |
| Secondary School District | Fremont Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $196,097 (+2%) Land $37,439 Building $158,658 | |
| 2025 | $3,410.00 | $192,253 Land $36,705 Building $155,548 |
| 2023 | $3,256.00 (-4.96%) | $184,790 Land $35,281 Building $149,509 |
| 2022 | $3,426.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 21530 Rainbow Dr in Zone D, where flood risk has not been studied, though there have been 2 flood claims nearby since 1983.
Source: FEMA National Flood Hazard Layer, effective January 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone D undetermined · not studied |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 2 (1983) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Mar 1983 · Coastal Storms, Floods, Slides & Tornadoes |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 21530 Rainbow Dr is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Indirect within ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | SAN JOSE WATER private · serves 1,039,920 people · EPA ID CA4310011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Mar 2026 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | Treatment failure resolved · Jun 2023 |
|---|---|
| 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.
Source: FCC Broadband Data Collection, based on 363 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL | 100 / 20 |
May also be available: Ridge Wireless.
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