Structural Engineer in Irvine & Orange County
We provide PE-stamped structural plans for ADUs, additions, garage conversions, wall removal, and inspection letters. Serving Irvine and cities across Orange County.
Licensed PE #82726
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Permit-Ready Plans
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Fast Turnaround
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Direct PE Access
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Licensed PE #82726 • Permit-Ready Plans • Fast Turnaround • Direct PE Access •
What Does a Structural Engineer Do?
A structural engineer designs and evaluates structural systems to ensure buildings are safe, stable, and code-compliant. For residential projects in Irvine and Orange County, this includes structural calculations, beam design, foundation plans, seismic compliance, and permit-ready documentation.
Structural Engineering Services
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Structural Engineer in Irvine
Licensed structural engineering for residential projects requiring permit approval. We provide PE-stamped structural plans for foundations, framing systems, beams, and load-bearing modifications throughout Irvine.
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ADU Structural Engineering
PE-stamped structural plans for detached and attached ADUs, including foundation design, framing layouts, and seismic compliance tailored for Irvine and Orange County permit requirements.
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Garage Conversion Engineering
Structural evaluation and beam design for garage-to-living-space conversions, including slab review, shear wall compliance, and permit-ready calculations.
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Room Additions & Expansions
Structural plans for home additions, including new foundations, framing integration, and load transfer design to meet California Building Code standards.
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Load-Bearing Wall Removal
Beam sizing and structural calculations for safe wall removal. Permit-ready documentation designed to maintain proper load paths and structural stability.
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Structural Inspection Letters
Licensed PE inspection letters for permits, real estate transactions, structural verification, and compliance documentation.
Structural Engineer in Irvine for Permit-Ready Plans
If you are planning an ADU, room addition, garage conversion, or load-bearing wall removal in Irvine, a licensed structural engineer is required for permit approval. We provide PE-stamped structural calculations and construction-ready drawings designed to meet California Building Code and local plan check requirements.
• PE-stamped structural calculations
• Beam and header sizing
• Foundation and framing design
• Seismic and lateral compliance
• Plan check response supports
Why Choose Affinity Design Group?
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You work directly with the engineer responsible for your design. Clear communication reduces misunderstandings, delays, and unnecessary revisions.
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Our structural calculations and drawings are prepared for efficient plan check review, reducing back-and-forth corrections.
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We understand common structural review triggers in Irvine and surrounding cities, helping streamline permit approval.
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Clean structural sheets and calculations make construction straightforward and reduce contractor confusion.
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We respond promptly and provide realistic timelines so your project can move forward without unnecessary delays.
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From ADUs to tenant improvements, we provide structural engineering solutions for a range of project types.
Claire C. of Sherman Oaks, CA
“Daniel from Affinity Design Group was professional and knowledgeable. He designed my backyard patio deck and gazebo, and we received our building permit ahead of schedule!”
Dyson W. of Worthy Homes
“Daniel’s patience and attention to detail were exceptional in designing condo units for my multi-zoned property. Despite city challenges, his brilliant design won unanimous support from my neighbors.”
Frequently Asked Questions
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If your project modifies structural components such as foundations, load-bearing walls, beams, or framing systems, the City of Irvine typically requires stamped structural calculations prepared by a licensed Professional Engineer.
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Most residential projects are completed within 1–3 weeks depending on scope, documentation quality, and structural complexity.
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Costs vary based on project type. Inspection letters are typically lower scope, while ADUs and additions require full structural design packages.
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No. Removing structural walls without proper analysis can create safety risks and will typically fail permit review.
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Yes. We coordinate directly with architects, designers, and contractors to ensure structural clarity and compliance.
Start Your Structural Review
Send your plans and project address. We’ll outline the required scope and timeline clearly.