121 Design Build Inc specializes in architectural, structural, and construction planning services in Los Angeles and surrounding areas. From custom home designs to ADU construction plans, we deliver tailored solutions for single-family homes, multi-family projects, and affordable housing developments under SB 9. Our team of licensed architects offers expertise in affordable residential designs, house extensions, and remodeling services in Beverly Hills, Santa Monica, and beyond. Whether you need ADU permit architects, home addition designers, or full-service construction planning, we ensure a seamless process from concept to permit approval. Choose 121 Design Build for innovative, cost-effective solutions that transform your vision into reality.

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