Flood zones for vacant land in Walnut
Of the 43 vacant lots in Walnut, 0 (0%) are in a FEMA high-risk flood zone, where a home loan on a new building needs flood insurance. 21 (49%) are in zone X with minimal risk. 22 are zone D, where flood risk has not been studied.
Flood zones in Walnut
| FEMA zone | Vacant lots | Share |
|---|---|---|
| D | 22 | 51% |
| X | 21 | 49% |
What the letters mean: flood zones explained.
Lots in a high-risk flood zone in Walnut
Zones A, AE, AH, AO and VE, lowest assessed value first.
None in this city.
Lots outside the flood zone in Walnut
Zone X with minimal risk, lowest assessed value first.
| Lot | Acres | Assessed |
|---|---|---|
| 20379 Portside Dr8269-036-270 | 6.86 | $9 |
| 19816 S Walnut Dr8762-022-001 | 0.02 | $1,250 |
| 422 Camino De Teodoro8722-021-009 | 0.09 | $7,034 |
| 19752 Camino De Rosa8722-018-012 | 0.22 | $28,212 |
| 450 Camino De Teodoro8722-020-026 | 0.15 | $38,774 |
| 623 Camino De Gloria8722-019-023 | 0.42 | $98,900 |
| 2538 Brea Canyon Cut Off8764-024-027 | 0.3 | $105,325 |
| 556 Castlehill Dr8722-013-046 | 0.38 | $121,202 |
| 604 Camino De Teodoro8722-019-025 | 0.4 | $362,238 |
| 2266 Pointer Dr8764-021-003 | 0.65 | $376,912 |
| 19830 Colima Rd8764-001-133 | 0.31 | $478,522 |
| 2625 Brea Canyon Cut-off Rd8269-017-035 | 1.05 | $866,653 |
| 20836 Marcon Dr8709-016-004 | 2.11 | $1,304,068 |
| 389 Avenida Esplendor8722-012-069 | 0.51 | $1,352,220 |
| 20903 Currier Rd8760-024-005 | 2.3 | $1,712,196 |
| 20651 Valley Blvd8720-025-049 | 1.01 | $3,183,624 |
| 19816 S Walnut Dr8762-022-002 | 4 | $7,242,000 |
| 20055 Colima Rd8764-002-006 | 21.1 | $35,985,600 |
| 19816 Walnut Dr8762-023-001 | 39.91 | $70,798,200 |
| 19711 Valley Blvd8722-018-900 | 0.41 | — |
| 20303 Bickford Dr8764-019-900 | 0.13 | — |
Questions about land in Walnut
How much vacant land in Walnut is in a flood zone?
0 of 43 vacant lots in Walnut (0%) are in a FEMA high-risk flood zone (A, AE, AH, AO or VE). 21 are zone X with minimal risk. 22 are zone D, where flood risk has not been studied.
Do I need flood insurance for land in Walnut?
Not for an empty lot: flood insurance covers buildings. If you build in a high-risk zone and borrow from a federally regulated lender, flood insurance on the building is required. 0% of Walnut's vacant lots are in such a zone.
More for Walnut: all vacant land · fire hazard zones
Sources
Counts are LandGrab's analysis of 2026 public data for vacant parcels in Los Angeles County, updated 2026-10-19. Maps change; confirm a specific lot with the county before you buy.