How much vacant land in Acton is in a flood zone?

87 of 1,851 vacant lots in Acton (5%) are in a FEMA high-risk flood zone (A, AE, AH, AO or VE). 1,173 are zone X with minimal risk and 9 are moderate risk. 582 are zone D, where flood risk has not been studied.

Do I need flood insurance for land in Acton?

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. 5% of Acton's vacant lots are in such a zone.

Flood zones for vacant land in Acton

Of the 1,851 vacant lots in Acton, 87 (5%) are in a FEMA high-risk flood zone, where a home loan on a new building needs flood insurance. 1,173 (63%) are in zone X with minimal risk, and 9 are moderate risk. 582 are zone D, where flood risk has not been studied.

Flood zones in Acton

FEMA zone	Vacant lots	Share
X	1,182	64%
D	582	31%
AE	64	3%
A	22	1%
AO	1	under 1%

What the letters mean: flood zones explained.

Lots in a high-risk flood zone in Acton

Zones A, AE, AH, AO and VE, lowest assessed value first (25 of 87).

Lot	Acres	Assessed	Zone
Gillespie Ave near Crown Valley3208-024-060	0.04	$1,889	AE
Crown Valley Rd and Gillespie3208-019-020	0.02	$1,889	AE
Sierra Hwy near Mt Spri3056-004-042	0.51	$2,006	A
Lang Sta Rd near Stonecrest3210-017-057	2.11	$3,246	AE
Rodkyford Rd near Angeles3056-014-022	1.83	$3,392	AE
Nickels Ave near Crown Valley3208-024-059	0.05	$3,497	AE
Carson near Mesa Rd3056-024-001	0.11	$3,681	AE
Dorama and Aliso St3208-033-082	1.26	$5,219	AE
Escondido Canyon Rd near Aliso3208-017-029	0.17	$7,218	AE
Soledad Canyon Rd near Cory Ave3208-014-101	0.09	$8,492	AE
Crown Valley Rd near Nickels3208-024-030	0.09	$8,702	AE
Crown Valley Rd near Gillespie3208-024-031	0.09	$8,702	AE
Crown Valley Rd and Gilliespie3208-024-032	0.08	$8,702	AE
Crown Valley Rd and Smith Ave3208-024-026	0.06	$8,702	AE
3rd St and Cory Ave3208-026-053	0.08	$9,845	AE
Ward Rd and Escondido Canyon3223-003-005	5.37	$10,263	A
Cory Ave and 3rd St3208-026-055	0.08	$10,461	AE
Crown Valley Rd near Gurrier3208-022-020	0.15	$10,824	AE
Carson Mesa and Alisoncyn3056-025-018	0.59	$12,309	AE
Carson Mesa Rd near Vc Alison3056-025-010	4.56	$13,204	AE
Ward Rd and Secondido Canyon3223-003-012	6.03	$16,236	A
Sierra Hwy near Angeles Fores3056-014-047	0.91	$20,263	A
Soledad Canyon Rd and Smith3208-013-047	10.04	$21,879	AE
Escondido Canyon Rd near 1st St3208-018-029	1.93	$24,033	AE
Gillespie Ave and Crown Valley3208-022-015	0.11	$26,775	AE

Lots outside the flood zone in Acton

Zone X with minimal risk, lowest assessed value first (25 of 1,173).

Lot	Acres	Assessed
Galloping Way near Sierra3057-002-024	68.73	$9
Camino Canyon Rd and El Dorado3056-033-088	28.86	$9
Galloping Way and Sierra3057-002-025	12.71	$9
Aliso Canyon Rd near Via Shadow Canyon3056-032-053	6.73	$9
Aliso Canyon Rd near El Dorado3056-033-087	4.23	$9
San Gabriel Ave near Sierra3057-015-044	0.26	$9
Soledad Canyon Rd and Ohio3208-029-041	0.08	$9
Soledad Canyon Rd near Stonecres3210-017-054	0.08	$9
Sierra Hwy near Acton Canyon Rd3217-024-009	0.35	$10
Forest View near Peakland Rd3057-009-038	0.16	$10
Soledad Canyon Rd and Polk3208-030-051	0.01	$10
Escondido Canyon Rd near Norcros3223-001-012	0.05	$113
Soledad Cx Rd and Smith Rd3208-013-049	0.6	$125
Acton Canyon Rd near Via Clarita3217-025-029	0.54	$125
Sierra Hwy near Av Fwy3056-014-049	0.06	$125
Sierra Hwy and 68th St W3216-009-007	0.27	$131
Soledad Canyon Rd near Michigan3208-029-033	0.02	$133
El Dorado and Cinarron Wy3056-033-089	0.17	$143
Lang Sta Rd near Stonecrest3210-017-051	0.09	$175
Soledad Canyon Rd and El Sastre3056-019-031	0.09	$453
Sierra Hwy near Ward Rd3216-017-001	0.33	$699
Sierra Hwy near Angeles3056-004-022	0.25	$942
Amar Rd near Angeles Forest3056-015-011	5.89	$1,020
Juniper Ridge Ln near Angeles3056-018-061	3.2	$1,156
Sierra Hwy near Carson3056-004-052	2.02	$1,184

More for Acton: 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.