Quick answer
Cost depends on what you need. At Residential PE, a review and stamp of small residential work starts at $249, engineered plans with a PE stamp start at $599, and larger multi-discipline packages start at $1,999. Every job is quoted as one fixed fee before work starts, with plan review revisions included.
“How much does a structural engineer cost?” is the first question most clients ask, and online answers vary wildly because they mix very different scopes. A stamped letter for one beam and a full set of plans for a new home are not the same job. Here is how pricing actually works.
The three levels of structural work
Review and stamp (from $249)
You already have drawings, for example from a designer, contractor or yourself. The engineer checks them against the code, sizes members, adds missing details and seals the set. Best for decks, small remodels and simple additions. See review and stamp.
Engineered plans (from $599)
The engineer designs the structure and prepares the sealed sheets and calculations: beams for a removed wall, a garage conversion, an ADU, a foundation repair, a retaining wall. See structural engineering.
Full approval support (from $1,999)
Larger or complex projects with several disciplines, such as structural plus civil or MEP, with a dedicated project manager and expedited turnaround.
What pushes the price up
- Size and complexity: more stories, longer spans, irregular shapes and heavy loads
- Site conditions: poor soils, slopes, flood zones, high wind or seismic areas
- Missing information: no existing drawings or measurements to work from
- Site visits: needed for some assessments and existing-condition surveys
- Extra disciplines: grading, drainage, mechanical, electrical or plumbing design
- Rush deadlines
What brings it down
- Sending complete information up front: plans, photos, measurements, survey
- Knowing your jurisdiction’s requirements, or letting us check them before quoting
- Using existing drawings and only engineering the parts that need it
- Deciding the layout before engineering starts, so the design is not redone
Fixed fee or hourly?
Many firms bill hourly, which makes the final cost hard to predict. We quote one fixed fee in writing before work starts, including the revisions needed to get through plan review. You know the price before you commit.
What is not included
- Building department permit fees
- Land surveys and soils reports, when your project needs them
- Architectural design beyond what the permit requires, unless quoted
Get an exact price
- Your drawings, sketch or photos
- Project address and a short description of the work
- Any comments from the building department
Get a fixed-fee quote, usually within the hour. See pricing for what each tier includes.
Common questions
Why do structural engineering quotes vary so much?
Because the scope varies. Compare what each quote includes: drawings or just a letter, calculations, site visits, and whether plan review revisions are covered.
Is a structural engineer worth the cost?
When the work needs one, yes: the permit cannot be issued without it, and a correct design avoids failed inspections and expensive rework.
Do I pay extra if the city asks for changes?
Not with us. Revisions requested by the plan reviewer are included until your permit is approved.
Does the homeowner or the contractor pay the engineer?
Either. Homeowners often hire the engineer directly so the drawings belong to them, and contractors often include engineering in their bid.