Get your plans permit-ready

Licensed structural engineering, delivered in as little as 3–4 weeks.

Skip the hassle of sourcing your own structural engineer. AD streamlines the path from plan selection to permit submission, with stamped structural engineering through our trusted partner.

Get a Quote Or email us to learn more

Engineering support you can build on

Broad coverage, fast turnaround

Licensed structural engineers serving all 50 states and most Canadian provinces, with stamped plans delivered in as little as 3–4 weeks.

Built for stock plans

Our engineering partners are experienced with AD plans across all plan types — single-family, multi-family, garage, ADU, and more.

Trusted support, transparent pricing

Access reliable structural engineering services through AD’s trusted resource, with competitive pricing and no hidden fees.

Need structural engineering?

Request a no-obligation quote. Our engineering services provider will reach out within 2 business days to learn more about your building site and discuss next steps.

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Frequently asked questions

Stock plans are designed to general building standards, but local requirements vary. Most building departments require a licensed structural engineer to review and stamp the construction drawings before issuing a permit. The engineer considers site-specific factors such as soil conditions, wind loads, snow loads, seismic requirements, and local building codes. Without the required stamp, you may not be able to pull a permit or begin construction.