i Arch Studios

i Arch Studios is a Los Angeles-based architectural design firm specializing in residential ground-up construction, home additions, ADUs, Junior ADUs (JADUs), interior renovations, and development planning services. Founded by Peter Patpatian, the firm was created to simplify and streamline the real estate design and development process, helping homeowners and investors transform ideas into permit-ready projects with greater efficiency and clarity. By combining architectural expertise with a deep understanding of Southern California building codes and regulations, i Arch Studios delivers practical, cost-effective design solutions that maximize property value and functionality.

The firm’s client-focused approach emphasizes clear communication, transparent pricing, and comprehensive project support from initial feasibility studies through permit approval. Whether designing an ADU, planning a home addition, coordinating an SB9 project, or developing a custom residence, i Arch Studios works closely with clients to create spaces that align with their goals while navigating the complexities of zoning, planning, and permitting requirements.

Services

• Architectural Design
• Residential Design
• Ground-Up Construction Design
• Accessory Dwelling Unit (ADU) Design
• Junior ADU (JADU) Design
• Garage Conversion Design
• Home Additions
• Second-Story Additions
• Interior Renovation Design
• Remodel Design
• SB9 Lot Split Planning
• Duplex Conversion Planning
• Space Planning
• Design Development
• Site Analysis
• Property Research
• Feasibility Studies
• Drafting Services
• Permit Expediting
• Permit Coordination
• Construction Documentation
• 3D Modeling
• 3D Renderings
• Interior Layout Design
• Low Impact Development Plans
• Zoning Analysis
• Building Code Review
• Architectural Consulting
• Development Planning Services

Why Choose i Arch Studios?

• Specialized expertise in ADUs, JADUs, and home additions
• Deep knowledge of Southern California zoning and building regulations
• Fixed-fee pricing structure
• Streamlined design and permitting process
• Personalized client consultations
• Comprehensive architectural and permit services
• Strong focus on communication and project transparency
• Practical, value-driven design solutions
• Experience with residential development projects
• Commitment to helping clients increase property value and usability