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, Senior Marketing Manager at 619-462-1515 or We look forward to working with you!





San Diego County Office (Headquarters)

7578 El Cajon Boulevard
La Mesa, California 91942
Phone 619-462-1515
Fax 619-462-0552

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North San Diego County Office
703 Palomar Airport Road, Suite 200
Carlsbad, CA 92011
Phone 760-517-9060.
Fax 619-462-0552

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Sacramento County Office

11 Natoma Street, Suite 155
Folsom, California 95630
Phone 916-365-8700
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Orange County Office

16485 Laguna Canyon Road, Suite 150
Irvine, CA 92618
Phone 949-234-8770
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Riverside County Office

11801 Pierce Street, 2nd Floor
Riverside, CA 92505
Phone 951-710-3275
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General Inquiry Form

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