When Is a Structural Engineer Hired on a Project?
Structural engineers design and stamp the parts of a building that hold it up: foundations, framing, lateral systems, and connections. Because building departments generally require stamped structural drawings for anything that touches the structure, the structural engineer's timing is tied directly to the permit.
The typical order on a design-bid-build project
- The owner hires an architect.
- The architect brings on the structural engineer during schematic design or design development.
- The structural engineer designs and stamps the structural drawings.
- Those drawings go into the building permit application.
- The project then goes out to contractors to bid.
In this sequence the structural engineer of record is in place well before the filing becomes public. For ground-up work, seeing a filing usually means that slot is taken.
Where structural work is assigned after the filing
- Delegated design. Steel connections, cold-formed framing, trusses, and precast are commonly designed by specialty engineers working for fabricators and subcontractors, hired after the main permit is filed.
- Retrofit programs. Mandated seismic work, like soft-story retrofit programs, and voluntary upgrades generate stand-alone structural engagements, often owner-led. See the SF Soft Story Retrofit Program guide for one example.
- Renovations and additions. Owners and residential GCs frequently need a structural engineer brought in mid-project, when demolition uncovers conditions or a scope change adds structural work.
- Revisions and amendments. Filed projects change, and structural revisions need an engineer, sometimes a new one.
How permit filings relate to consultant selection
For a structural firm, permit filings do two jobs. First, they map who is building what in your market: the owners, developers, architects, and GCs who file repeatedly are the relationship targets. Second, on renovation, addition, retrofit, and delegated-design work, filings surface projects where structural scope may still be open or about to be created.
A filing is not proof that a consultant slot is open. It is a reason to research the project and the parties earlier than waiting for an RFP. To see how firms turn filings into a pursuit list, see structural engineering leads from permit filings and what the pre-bid window is.
Frequently asked
Is the structural engineer hired before the general contractor?
On design-bid-build projects, yes: the structural engineer is engaged during design, and the GC is selected later through bidding. On design-build projects the contractor is on board first. On renovations, the GC sometimes brings the structural engineer in.
Does a permit filing mean the structural engineer is already chosen?
For new buildings and structural alterations, usually yes, because stamped structural drawings are part of the application. But delegated-design components, retrofit programs, renovation surprises, and revisions regularly create structural work after the filing.
Who hires the structural engineer?
Most often the architect, as a subconsultant, on commercial design-bid-build work. Owners hire structural engineers directly for retrofits, assessments, and residential projects, and fabricators hire specialty engineers for delegated-design scopes.
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