Why Get a Foundation Inspection?
Foundation repair is one of the most expensive home repairs a property owner can face. Before committing to thousands of dollars in repair work, an inspection establishes:
- What is actually wrong - not everything that looks like a foundation problem is one
- Why it happened - the cause determines the correct repair approach
- How severe it is - guides prioritization and whether immediate action is needed
- What the repair should consist of - so you can evaluate contractor quotes intelligently
An inspection is also an independent check against the contractor quoting the repair. A contractor has financial incentive to find more repair needed; an independent inspector does not.
What the Inspection Covers
Exterior Assessment
The inspector walks the foundation perimeter, observing:
- Visible cracks in the foundation wall, stucco, brick veneer, or exposed concrete
- Drainage patterns - does ground slope toward or away from the foundation?
- Downspout placement and condition
- Evidence of past repair (patched cracks, stucco patches, previous pier brackets)
- Condition of any visible crawlspace vents
Interior Assessment
Inside the home, the inspector looks for:
- Diagonal cracks at door and window corners (hallmark of differential settlement)
- Stair-step crack patterns in brick, tile, or block
- Gaps between walls and ceilings or at floor transitions
- Doors and windows that stick, bind, or have uneven gaps in their frames
Floor Level Survey
A laser level or manometer is used to map elevation across the floor at multiple points. This generates quantitative data showing:
- Total differential elevation (how much the low area differs from the high area)
- Location of settlement zones
- Baseline for measuring improvement after repair
The floor level survey is one of the most valuable parts of the inspection - it translates visual symptoms into measurable data.
Crawlspace / Basement Inspection
Where accessible, the inspector physically enters the crawlspace to assess:
- Pier and beam condition (checking for rot, settlement, pest damage)
- Moisture conditions (standing water, condensation, mold, efflorescence)
- Insulation condition
- Any visible foundation wall cracks from the interior
For basement foundations, the inspector assesses wall condition (cracking, bowing, moisture staining) and floor slab condition.
The Inspection Report
A professional inspection should produce a written report that includes:
- Photographs of all observed conditions
- Floor level data from the survey
- Assessment of cause - soil movement, drainage, plumbing, or construction deficiency
- Severity assessment - is this cosmetic, monitor-worthy, or immediate action needed?
- Recommendations - what, if anything, should be done, and in what priority
If a contractor provides an inspection report with only a repair quote and no explanation of findings, that is not a complete inspection report. Ask for the data behind the recommendation.
Who Performs Foundation Inspections
Foundation repair contractors: Experienced field personnel who inspect foundations daily. These assessments are often free or low-cost. The limitation is potential conflict of interest - the inspector’s company sells the repair.
General home inspectors: Identify obvious foundation issues as part of a whole-home inspection. Typically not equipped for the specialized floor level survey or crawlspace structural assessment that foundation contractors provide.
Licensed structural engineers (PE): Independent, licensed professionals whose assessment carries legal weight. Appropriate for pre-purchase inspections, insurance claims, major repair decisions, and disputes. Cost: $400-$1,000 for residential.
Geotechnical engineers: For complex situations involving soil testing, boring, and subsurface investigation. Typically involved in larger commercial projects or unusual residential situations (potential sinkhole, unusual soil conditions).
Red Flags During an Inspection
Be cautious if:
- The inspector recommends major repair without showing you measured floor level data
- The assessment is verbal only with no written documentation
- The recommendation jumps directly to full foundation replacement without explaining why repair is inadequate
- The inspector won’t access the crawlspace or basement (or doesn’t have appropriate equipment)
Getting 2-3 assessments from different contractors - plus an independent structural engineer for large projects - is reasonable practice before committing to significant foundation repair.