About Us

NorCal_GeneralHELIX Environmental Planning (HELIX) is an employee-owned firm and a leader in environmental planning and natural resource sustainability. Established in 1991 and with offices in San Diego, Los Angeles, Orange, Placer, Riverside, and Sacramento counties, HELIX provides a broad range of environmental consulting and design services throughout California and the western United States. HELIX has extensive experience helping public and private clients comply with environmental laws and regulations, manage natural and cultural resources, and design and construct sustainable projects.


HELIX has extensive experience across California and a deep pool of staff that includes environmental planners, technical study specialists (e.g., air quality/greenhouse gas and acoustical specialists), registered professional archaeologists, architectural historians, ecologists, permitted wildlife biologists and botanists, certified arborists, landscape architects, wetland scientists, habitat mitigation experts, regulatory permitting specialists, habitat restoration specialists, vegetation management field crews, equipment operators, native plant nursery specialists, certified drone pilots, and Geographic Information Systems (GIS) specialists.


Our primary in-house services include:


The primary sectors in which we work include:


Commitment to our clients, creative problem solving, and high-quality work products are the hallmarks of HELIX’s success. Many clients, as a measure of their confidence, bring their largest, most sensitive and controversial projects to HELIX.