Contact Us
HELIX Environmental Planning has an excellent reputation earned through creative problem-solving, commitment to our clients, high-quality work products, and tailored solutions. Please contact us for more information. For general inquiries, please use the online form below, or contact our headquarters location so we can direct you to the appropriate person. For press inquiries and teaming opportunities, please contact Tiffany Thomson, Marketing & Communications Director at 619-462-1515 or tiffanyt@helixepi.com. We look forward to working with you!
San Diego County Office (Headquarters)
7578 El Cajon Boulevard
La Mesa, CA 91942
Phone 619-462-1515
Fax 619-462-0552
North San Diego County Office
703 Palomar Airport Road, Suite 200
Carlsbad, CA 92011
Phone 760-517-9060
Fax 619-462-0552
Los Angeles County Office
135 W. Green Street, Suite 100
Pasadena, CA 91105
Phone 626-463-0060
Fax 619-462-0552
Sacramento County Office
1180 Iron Point Road, Suite 130
Folsom, CA 95630
Phone 916-435-1205
Fax 619-462-0552
Placer County Office
1677 Eureka Road, Suite 100
Roseville, CA 95661
Phone 916-435-1202
Fax 619-462-0552
Orange County Office
16485 Laguna Canyon Road, Suite 150
Irvine, CA 92618
Phone 949-573-9450
Fax 619-462-0552
Riverside County Office
1504 Columbia Avenue, Suite 8
Riverside, CA 92507
Phone 442-287-5400
Fax 619-462-0552