The Four Standard Sections of an Engineer Report
Most residential foundation reports include four parts in roughly this order: observations, measurements, severity assessment, and recommendations. Some engineers add a section for limitations or scope, which is worth reading carefully because it tells you what the engineer did not look at.
The observations section is descriptive. It lists what the engineer saw, where they saw it, and sometimes when (if there is a date stamp on a photo). The measurements section provides numerical data: crack widths in thousandths of an inch, depths if probed, lengths in feet. The severity assessment translates the raw data into a category. The recommendations section says what should be done next.
A report that skips any of these four sections is incomplete. I have seen reports from engineers that were essentially one paragraph: 'I looked at the basement. I saw a vertical crack. It appears cosmetic. No action required.' That is not a report. That is a note.
Understanding Severity Terminology
Engineers in residential work generally rely on classification language adapted from the American Concrete Institute and similar bodies. The exact wording varies by engineer, but the categories usually map to three or four tiers based on crack width and other factors.
'Cosmetic' or 'aesthetic' cracks are typically under 1/16 inch wide. They do not affect strength or function. 'Serviceability' issues are wider, usually between 1/16 inch and 1/4 inch, and may affect things like water tightness or appearance over time but not structural integrity. 'Structural' cracks are usually over 1/4 inch, show evidence of movement, or display patterns that indicate a load-related problem.
Some engineers use a numeric scale instead, citing standards from the International Code Council or specific damage-classification systems used in the geotechnical world. If the report uses a numeric scale, ask the engineer to explain which scale they are using and where to find documentation on it.
Measurement Detail to Look For
Good reports give specific numbers, not adjectives. 'Crack measured at 0.045 inches at the widest point near grade level' is useful. 'The crack appears narrow' is not. Measurements should ideally be taken at three or more points along any significant crack, since width often varies along the length.
A thorough report will also note the depth of the crack if it was probed, the direction (vertical, horizontal, diagonal, stepped), the location relative to known stress points (corners, openings, joints), and whether the surfaces inside the crack are clean or weathered. A clean break with sharp edges suggests recent activity. Rounded edges and dust accumulation suggest the crack has been there for a long time.
Photo and Diagram Standards
Reports without photos or diagrams are hard to verify later. If you sell your house in five years, the new buyer's inspector cannot tell whether the crack has changed without baseline images. I push for at least one wide shot of the affected wall and one close-up of each crack mentioned, with a ruler or measuring tape visible in the frame.
Some engineers include a hand-drawn diagram showing crack locations on a basement floor plan. Others use printouts of an actual floor plan if one was provided. Either is fine. The point is that someone in the future can look at the document and know exactly which cracks were assessed.
Reading the Recommendations Section
This is where reports get interesting and where contractors sometimes get creative. The recommendations section should be specific. 'Install five wall anchors along the east basement wall' is specific. 'Implement structural reinforcement as needed' is not.
Watch for hedging language. Phrases like 'monitor and reassess in six months' or 'consult with a qualified contractor for repair options' often mean the engineer is not certain enough to recommend a specific intervention. That is not bad. It usually means the situation is borderline and observation is appropriate. But it also means you should not be getting bids for tens of thousands of dollars in work yet.
If the report says 'monitor' and a contractor hands you a $40,000 underpinning proposal the next week, something is off. Either the contractor is recommending work beyond what the engineer called for, or the contractor and engineer disagree about severity. In that case, get a second engineer opinion.
Limitations and Scope Sections
Many homeowners skip past the limitations section because it looks like boilerplate. Read it anyway. It tells you what the engineer did not examine, what they assumed without verifying, and what their conclusions specifically do not cover.
Common limitations include 'no soil testing was conducted,' 'no excavation was performed to examine the foundation footing,' and 'analysis is limited to visible conditions at the time of inspection.' These are not red flags by themselves. They are just honest acknowledgments that a visual inspection has limits. But if you later have a problem the engineer did not anticipate, the limitations section is what their lawyer will point to.
If your situation involves anything unusual, plumbing leaks, recent construction next door, evidence of soil disturbance, you want those things explicitly addressed in the report. Either the engineer evaluated them, or the report should note that they were outside the scope.
Verifying Credentials and Signature
A useful engineer report ends with the engineer's professional engineer (PE) license number, state of licensure, signature, and date. Many states require a stamp or seal for documents that will be used in real estate transactions or permit applications. The National Council of Examiners for Engineering and Surveying maintains licensure records you can verify online.
An unsigned, undated document is a draft, not a report. I have seen homeowners pay for what they thought was a structural engineer evaluation only to find out later the document was prepared by an unlicensed staff member and was never reviewed or signed by a licensed PE. If the report does not have a signature and license number, ask why.