ADU Structural Engineering & Permit-Ready Plans
Stamped structural calculations & permit-ready plans for your Bay Area ADU — in about 1-2 weeks.
- Permit-Ready Plans
- ADU Structural Calculations
- Detached ADU
- Attached ADU
- Repurposed ADU
- ADU Legalization
- Junior ADU
We will reach out to you within 1 business day.
- Free quote
- No obligation
- 24-hr response
Our Engineering Services
Comprehensive structural engineering solutions for residential projects throughout the Bay Area
Some of Our Work
Reliable, High-quality Structural Solutions
Our Projects
Residential Projects
ADU Engineering & Design Services
Structural Calculations for ADUs
Ensure your ADU is safe and compliant with precise gravity and lateral load designs.
Site Inspections for ADU Projects
Get detailed foundation and structural inspections to ensure your ADU’s stability.
ADU Permit Approval Support
Navigate Bay Area regulations with our expert guidance to secure your ADU permit fast.
Cost-Effective ADU Engineering
Optimize your design to reduce construction costs without compromising safety.
Seismic Design for Earthquake Safety
Protect your ADU with seismic engineering tailored to San Francisco’s strict codes.
Local Expertise in the Bay Area
Trust our 30+ years of experience with ADU projects in San Francisco, Oakland, and beyond.
ADU Structural Engineering, Permit-Ready in 1-2 Weeks
Planning an accessory dwelling unit in the Bay Area? Our licensed structural engineers deliver stamped structural calculations and permit-ready plans that pass city plan-check the first time. Whether you're building a detached ADU, attached ADU, garage or backyard conversion, or legalizing an existing unit, we design the foundation, framing, and seismic details your permit requires.
You'll get clear, code-compliant drawings and calculations in about 1-2 weeks, backed by 30+ years of experience and 800+ completed Bay Area projects. From foundation design to seismic safety and city approvals, we handle the structural engineering so your ADU project keeps moving.
- Stamped structural calculations for ADU permits
- Foundation & framing design for attached and detached ADUs
- Seismic design and earthquake-safety compliance
- Permit and plan-check support with Bay Area building departments
How We Work
A simple, streamlined process from consultation to construction support
Structural Consultation
Tell us about your project needs
Competitive Pricing
Receive a transparent, fair quote
Quick Turnaround
Fast delivery without compromising quality
Flexible Change Order
Easy change orders as your project evolves
Follow-through Permit Process
We handle the permit submission process
Construction RFIs
Ongoing support for construction RFIs
What Our Clients Say
Trusted by homeowners across the San Francisco Bay Area
“SF Bay Engineering is FAST. I submitted an online request to SF Bay Engineering for an onsite evaluation to remove a load-bearing wall. They called me back within an hour with a quote and a schedule. The visiting engineer came a few days later and was able to address all my questions with some quick sketches on the spot. The evaluation report came on the very same day as the site visit and the structural plans were delivered just 4 days after we signed the proposal, and they were approved over the counter. Definitely money well spent!”
Damon S.
South San Francisco
Load Bearing Wall Removal
Ready to Start Your Project?
Get a structural consultation from our experienced structural engineers. We'll help you find the best solution for your project.