Flood zones for vacant land in Walnut
Of the 36 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. 20 (56%) are in zone X with minimal risk. 16 are zone D, where flood risk has not been studied.
Flood zones in Walnut
| FEMA zone | Vacant lots | Share |
|---|---|---|
| X | 20 | 56% |
| D | 16 | 44% |
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 | $1,227 |
| 422 Camino De Teodoro8722-021-009 | 0.09 | $6,897 |
| 19752 Camino De Rosa8722-018-012 | 0.22 | $27,659 |
| 623 Camino De Gloria8722-019-023 | 0.42 | $96,961 |
| 2538 Brea Canyon Cut Off8764-024-027 | 0.3 | $103,260 |
| 556 Castlehill Dr8722-013-046 | 0.38 | $118,826 |
| 604 Camino De Teodoro8722-019-025 | 0.4 | $355,136 |
| 2266 Pointer Dr8764-021-003 | 0.65 | $369,522 |
| 19830 Colima Rd8764-001-133 | 0.31 | $469,140 |
| 19816 S Walnut Dr8762-022-002 | 4 | $712,980 |
| 2625 Brea Canyon Cut-off Rd8269-017-035 | 1.05 | $849,660 |
| 20836 Marcon Dr8709-016-004 | 2.11 | $1,278,499 |
| 389 Avenida Esplendor8722-012-069 | 0.51 | $1,325,707 |
| 20903 Currier Rd8760-024-005 | 2.3 | $1,678,624 |
| 20651 Valley Blvd8720-025-049 | 1.01 | $3,121,200 |
| 20055 Colima Rd8764-002-006 | 21.1 | $3,759,720 |
| 19816 Walnut Dr8762-023-001 | 39.91 | $11,906,753 |
| 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 36 vacant lots in Walnut (0%) are in a FEMA high-risk flood zone (A, AE, AH, AO or VE). 20 are zone X with minimal risk. 16 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 2026-10-18. Maps change; confirm a specific lot with the county before you buy.