Structural engineering services built for permit-ready, high-clarity project execution
Use this hub to move directly into the right service page, compare scope, and find the matching planning resource before requesting a proposal.
Structural Engineering
AAA Engineering Design provides comprehensive structural engineering services for residential and commercial projects throughout California. Our licensed Professional Engineers deliver safe, code-compliant, cost-effective structural solutions.
Typical timing: 3-12 weeks for typical residential; 6-24+ weeks for commercial
Typical cost range: $2,500 - $15,000 for typical residential projects; $5,000 - $100,000+ for commercial projects
Seismic Retrofitting
Protect your building from earthquake damage with professional seismic retrofitting. Our licensed structural engineers assess your structure and design cost-effective seismic upgrades that enhance safety and meet California seismic requirements.
Typical timing: 2-4 months typical for residential; 6-18 months for large commercial
Typical cost range: Residential: $5,000-$15,000 typical; Soft-story buildings: $75,000-$400,000+; Commercial varies significantly
Residential Engineering
Specialized structural engineering services for single-family homes, multi-family residential, additions, remodels, and ADUs throughout California.
Typical timing: 3-10 weeks from start to permit
Typical cost range: $2,500 - $8,000 for most residential projects
Commercial Engineering
Comprehensive structural engineering services for commercial buildings, tenant improvements, industrial facilities, and multi-use developments throughout California.
Typical timing: 6-18 weeks from start to permit approval
Typical cost range: 0.5% - 2.0% of construction cost, or $5,000 - $50,000+ fixed fee
ADU Engineering
Specialized structural engineering for Accessory Dwelling Units (ADUs) including detached units, garage conversions, and attached ADUs throughout California.
Typical timing: 3-6 weeks from start to permit
Typical cost range: $2,000 - $5,000 for most ADUs
Wall Removal Engineering
Transform your space with professional load-bearing wall removal engineering. Our licensed structural engineers design safe, code-compliant solutions that create the open floor plans you want while maintaining structural integrity.
Typical timing: 3-6 weeks from start to permit
Typical cost range: $1,500 - $4,000 for typical single-wall residential projects
Foundation Engineering
Professional foundation engineering for new construction, repairs, and assessments. Our licensed structural engineers design safe, cost-effective foundation systems tailored to your site conditions and building requirements.
Typical timing: 4-14 weeks from start to permit
Typical cost range: $2,500 - $8,000 for residential; $5,000 - $25,000+ for commercial or complex sites
Foundation Repair
AAA Engineering Design provides expert foundation repair engineering for residential and commercial properties throughout California. Our licensed Professional Engineers diagnose foundation problems, design permanent repair solutions, and deliver PE-stamped plans that pass building department review.
Typical timing: 4-9 weeks from assessment to permit approval
Typical cost range: $2,000 - $8,000 for engineering services; $5,000 - $50,000+ for construction
Foundation Inspection
AAA Engineering Design delivers thorough foundation inspections for homeowners, buyers, real estate professionals, and property managers throughout California. Our licensed structural engineers provide clear, actionable reports that document foundation conditions and identify any structural concerns.
Typical timing: 1-2 weeks from scheduling to completed report
Typical cost range: $500 - $2,500 for inspections; $2,000 - $5,000 with full PE-stamped engineering report
Structural Inspection
AAA Engineering Design provides comprehensive structural inspections for residential, commercial, and industrial buildings throughout California. Our licensed Professional Engineers evaluate the complete structural system and deliver detailed reports that inform decisions about safety, repairs, purchases, and renovations.
Typical timing: 1-2 weeks from scheduling to completed report
Typical cost range: $500 - $3,000 for inspections; $2,000 - $6,000 with full PE-stamped engineering report
Crawl Space Repair
AAA Engineering Design specializes in crawl space structural repair engineering for California homes with raised foundations. Our licensed Professional Engineers assess crawl space damage, design permanent repair solutions, and provide PE-stamped plans for foundation, framing, and support system restoration.
Typical timing: 3-6 weeks from inspection to permit approval
Typical cost range: $1,500 - $5,000 for engineering services; $3,000 - $25,000 for construction
Raised Foundation Repair
AAA Engineering Design provides specialized raised foundation repair engineering for California homes with pier-and-beam, post-and-pier, and continuous stem wall foundations. Our licensed structural engineers design permanent repair solutions for settlement, deterioration, seismic deficiencies, and structural damage in raised foundation systems.
Typical timing: 4-9 weeks from assessment to permit approval
Typical cost range: $2,000 - $6,000 for engineering services; $5,000 - $35,000 for construction
One Story Addition Engineering
Professional structural engineering for single-story room additions, bump-outs, sunrooms, and family room additions throughout California. Our licensed engineers design safe connections between your new addition and existing home with PE-stamped plans ready for permit.
Typical timing: 3-8 weeks from start to permit approval
Typical cost range: $2,500 - $6,000 for most single-story room additions
Two Story Addition Engineering
Expert structural engineering for second-story additions, two-story room additions, and pop-top conversions throughout California. We evaluate existing foundations and framing, reinforce as needed, and deliver PE-stamped plans for safe vertical expansion.
Typical timing: 6-12 weeks from start to permit approval
Typical cost range: $4,000 - $10,000 for most second-story addition projects
New Home Engineering
Complete structural engineering for new custom homes, spec homes, and residential construction throughout California. Our licensed engineers design every structural element from foundation to roof, delivering PE-stamped plans optimized for safety, code compliance, and construction efficiency.
Typical timing: 7-14 weeks from start to permit approval
Typical cost range: $5,000 - $15,000+ depending on size and complexity
Apartment Building Engineering
Comprehensive structural engineering for apartment buildings, condominium complexes, townhomes, and multi-unit residential developments throughout California. Our licensed engineers deliver efficient, code-compliant designs for Type III and Type V construction with expert seismic engineering.
Typical timing: 12-28 weeks from start to permit approval
Typical cost range: $15,000 - $75,000+ depending on building size and construction type
Garage Conversion Engineering
Professional structural engineering for converting garages to living space, ADU conversions, home offices, and studios throughout California. Our licensed engineers design floor system upgrades, new openings, and structural modifications with PE-stamped plans for fast permit approval.
Typical timing: 3-6 weeks from start to permit approval
Typical cost range: $2,000 - $5,000 for most garage conversion projects
Permit Engineering
Get your project permitted faster with professional permit engineering services. Our licensed structural engineers prepare PE-stamped plans, respond to plan check corrections, and navigate building department requirements across every California jurisdiction.
Typical timing: 2-6 weeks for residential; 4-16 weeks for commercial depending on jurisdiction
Typical cost range: $1,500 - $5,000 for simple permits; $5,000 - $15,000+ for complex commercial or multi-story projects
Deck & Balcony Engineering
Expert structural engineering for deck construction, balcony repair, and California-mandated SB 326 and SB 721 inspections. Our licensed engineers design safe, durable exterior structures and help property owners comply with California balcony inspection laws.
Typical timing: 3-8 weeks for design-to-permit; inspections completed within 30 days of scheduling
Typical cost range: $1,500 - $5,000 for engineering design; $500 - $2,000 per building for SB 326/SB 721 inspections
Warehouse Engineering
Comprehensive structural engineering for warehouse construction, industrial facilities, mezzanines, and equipment foundations. Our licensed engineers design efficient steel and concrete structures built for heavy loading, clear spans, and California seismic requirements.
Typical timing: 10-20 weeks from start to permit; fast-track phased delivery available
Typical cost range: $10,000 - $50,000+ for engineering depending on building size and complexity
Parking Structure Engineering
Specialized structural engineering for parking garages, multi-level parking structures, and parking facility design. Our licensed engineers deliver efficient, durable parking structures designed for California seismic requirements and long-term performance.
Typical timing: 16-32 weeks from start to permit; phased delivery available for fast-track construction
Typical cost range: $25,000 - $100,000+ for structural engineering depending on size and complexity
Retaining Wall Engineering
Professional retaining wall engineering for hillside properties, property line walls, pool walls, and grade changes throughout California. Our licensed structural engineers design safe, code-compliant retaining walls optimized for your site conditions and budget.
Typical timing: 3-12 weeks from start to permit approval
Typical cost range: $2,000 - $8,000 for engineering design depending on wall size and complexity
Hillside Engineering
Specialized structural engineering for hillside home construction, slope stability solutions, and foundation systems for challenging terrain. Our licensed engineers design safe, buildable structures on California hillsides with expertise in caisson foundations, retaining systems, and geotechnical coordination.
Typical timing: 7-16 weeks from start to permit; hillside ordinance reviews may extend timeline
Typical cost range: $5,000 - $20,000+ for structural engineering depending on project scope and slope complexity
Planning resources built from real search demand
These lead magnets align with the project types and high-intent questions currently surfacing in Google Search Console and Bing.
Structural Engineering Fee Estimator and Scope Planner
Use this planning resource to estimate engineering scope, timing, and likely fee ranges before requesting a proposal.
- Budget-range framework for simple, moderate, and complex scopes
- Checklist of documents to gather before requesting a proposal
- Guidance on when PE calculations, site visits, or plan-check support usually matter
Raised Foundation Repair Triage Checklist
Quickly assess symptoms, urgency, and documentation needs before speaking with a structural engineer about raised foundation repair.
- Symptom-to-priority matrix
- Photo checklist for homeowners before a site visit
- Questions to ask before approving foundation repair scope
Soft-Story Retrofit Readiness Pack
Prepare ownership, budgeting, and permitting teams for a soft-story or multi-family seismic retrofit with a concise readiness guide.
- Owner-readiness checklist for retrofit scoping
- Budget and phasing questions to resolve before design
- Document list to accelerate engineering proposals