Santa Clara County property record for 21520 Rainbow Dr, Cupertino, CA 95014
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,283 sqft · built 1989 |
| Lot Size | 0.187 acres (8,136 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $13,115 (2025) |
| Flood Zone | Zone D (undetermined) |
| APN | 366-38-022 |
| Primary APN | 366-38-022 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,283 sqft Living Area |
| 1st Floor Area | 2,283 sqft |
| Family Room | Family Room |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | H-Shape |
| Construction Type | Wood |
| Lot Area | 8,136 sqft (0.187 acres) |
| Lot Dimensions | 116 ft deep x 71 ft wide |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Heating System | HVAC |
|---|
| Street Address | 21520 RAINBOW DR |
|---|---|
| City | CUPERTINO |
| State | CA |
| Zip | 95014-4817 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT B |
| Legal Lot Number | B |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 507702 |
Source: Santa Clara County records, as of July 27, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 21520 RAINBOW DR, CUPERTINO, CA 95014-4817 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Oct 26, 1998 |
| Transfer Doc | 0014473986 |
| Record Updated | Sep 20, 2026 |
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 | $1,052,744 (+2%) Land $650,792 Building $401,952 | |
| 2025 | $13,115.00 (+3.85%) | $1,032,103 (+4.04%) Land $638,032 Building $394,071 |
| 2023 | $12,629.00 (+0.89%) | $992,027 Land $613,257 Building $378,770 |
| 2022 | $12,517.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
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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