Fire hazard zones for vacant land in Walnut

Of the 43 vacant lots in Walnut, 5 (12%) are in a CAL FIRE Very High fire hazard severity zone, 0 are High and 0 are Moderate. 38 are outside any zone. In High and Very High zones, sellers of property with buildings must show a defensible space inspection, and new homes must meet California's wildfire building standards.

Fire hazard zones in Walnut

CAL FIRE zone	Vacant lots	Share
Very High	5	12%
High	0	0%
Moderate	0	0%
Not in a zone	38	88%

What the zones mean for buyers: fire hazard zones explained.

Lots in a High or Very High fire zone in Walnut

Lowest assessed value first.

Lot	Acres	Assessed	Zone
20379 Portside Dr8269-036-270	6.86	$9	Very High
21267 Granite Wells Dr8710-026-014	0.37	$18,016	Very High
2538 Brea Canyon Cut Off8764-024-027	0.3	$105,325	Very High
2625 Brea Canyon Cut-off Rd8269-017-035	1.05	$866,653	Very High
20303 Bickford Dr8764-019-900	0.13	—	Very High

Lots outside fire hazard zones in Walnut

Lowest assessed value first (25 of 38).

Lot	Acres	Assessed
21841 Arbor Ct8709-077-044	0.01	$10
19816 S Walnut Dr8762-022-001	0.02	$1,250
422 Camino De Teodoro8722-021-009	0.09	$7,034
19650 Stallion Cir8734-041-043	0.08	$18,190
507 Cofer Ct8709-021-028	0.48	$25,972
19752 Camino De Rosa8722-018-012	0.22	$28,212
450 Camino De Teodoro8722-020-026	0.15	$38,774
1007 Countryside Dr8709-069-008	1.11	$73,658
623 Camino De Gloria8722-019-023	0.42	$98,900
505 Cofer Ct8709-021-030	0.24	$101,424
822 Barcelona Pl8735-057-019	0.45	$110,948
556 Castlehill Dr8722-013-046	0.38	$121,202
960 N Carriage Ln8709-071-011	2.98	$131,958
19420 Conway Springs Ln8735-050-010	0.22	$198,411
604 Camino De Teodoro8722-019-025	0.4	$362,238
2266 Pointer Dr8764-021-003	0.65	$376,912
20328 Shadow Mountain Rd8712-012-007	0.41	$399,840
19830 Colima Rd8764-001-133	0.31	$478,522
22059 Manarola Way8709-109-016	0.07	$587,826
22085 Manarola Way8709-109-012	0.08	$603,432
22045 Garibaldi Dr8709-107-036	0.07	$615,500
22125 Garibaldi Dr8709-109-044	0.07	$615,500
792 El Vallencito8709-042-025	0.57	$657,948
22036 Garibaldi Dr8709-107-038	0.12	$689,785
1020 N High Knoll Ln8709-101-016	0.76	$854,037

Questions about land in Walnut

Is Walnut in a fire hazard severity zone?

5 of 43 vacant lots in Walnut are in a CAL FIRE fire hazard severity zone: 5 Very High, 0 High and 0 Moderate. 38 are outside any zone.

What does a Very High fire zone mean for land in Walnut?

The seller must disclose it, owners must keep defensible space cleared around buildings, and a new home must meet California's wildfire building standards (Building Code Chapter 7A). Get insurance quotes before you buy.

More for Walnut: all vacant land · flood 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.