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A foundation inspection is a structured visual and measurement check of the foundation, the floors, the walls and the ground around a house. It is not a quick opinion about a single crack, and it is not a brief walk through one room. A useful inspection follows a sequence and leaves a written record that another person can read later.
The value of the inspection is that written record. A verbal impression fades, and two people can remember the same visit differently. A report with dates, locations, photos, floor level readings and crack widths gives a baseline for later comparison.
Prepare the house and clear useful access
Preparation means giving the inspector a clear view of places where signs of movement or moisture usually appear. Move stored items away from basement walls and crawl space openings where that is safe and practical. Note any access hatch that is painted shut, blocked by shelving or hidden behind stored goods, and tell the inspector about it at the start of the visit.
Outside, note where downspouts discharge. Inside, make a short dated list of observations: doors that bind in certain seasons, floors that feel uneven, and rooms where damp spots have appeared. If earlier reports or dated photos exist, have them ready for comparison.
Walk the outside and read the ground
The outside walk usually starts with grading, gutters and the soil next to the foundation. Soil that slopes away from the house helps water move away from walls, while soil that slopes toward the house can hold water against the foundation. The inspector may look for soil that has pulled away from a wall, for ponding after rain, for splash blocks and downspout extensions, and for water collecting near corners or window wells.
The US Environmental Protection Agency notes that managing water outside foundation walls and grading the ground away from a house are central steps in addressing indoor environmental concerns during remodeling work. See the EPA guidance on managing water outside foundation walls and grading. Wall patterns are also noted from outside, including cracks, displacement, leaning and bowing, and where each pattern sits relative to doors, windows and corners.
Check floors, doors, walls and ceilings inside
Inside, the inspector looks for a pattern across rooms, not for one isolated mark. Floors are checked for slope, bounce, gaps at baseboards and changes in level between rooms. Doors are checked for binding, for gaps wider at the top than at the bottom, and for latches that no longer align. Windows are checked for sticking and for gaps at frames. Walls and ceilings are checked for cracks, nail pops, separation at trim and stains that suggest moisture.
Each finding should be tied to a location. A note that a door sticks is less useful than a note naming the room and the side where the gap is uneven. The inspector may also note whether a pattern appears on one side only, on one level only, or across several rooms, which helps separate a local issue from a wider pattern.
Check the basement and crawl space where accessible
A basement or crawl space check, where access is safe, looks at the foundation from the side often hidden by finished rooms. In a basement, the inspector may look at wall material, at cracks, bowing or leaning, at damp spots, and at beams, columns and joists that carry floor loads. In a crawl space, the inspector may look at piers, beams, joists, moisture on soil or framing, and visible signs of wood damage.
Access limits must be recorded honestly. A crawl space with low clearance or standing water may be viewed only from the opening, and a finished basement may hide wall surfaces behind drywall. In those cases the report should state what was seen, what was not seen and why, so the next step can be clearing access or monitoring a visible area.
Read the measurements that belong in a report
Measurements turn an inspection from an opinion into a record that can be compared. Floor level readings are among the most useful. A report should state where readings were taken, what method was used, and how much one area differs from another. A single reading in one room has limited meaning. A set of readings across rooms, with a simple sketch or plan, shows the shape of any slope or dip.
Crack measurements should include location, length, width and direction, and whether one side is offset from the other. Photos should be dated and should show the crack with a scale reference where practical. For context, the American Society of Home Inspectors describes causes of settling and signs that inspectors watch for, including cracks, sticking doors and uneven floors. See the ASHI page on settling foundations causes and warning signs. A good report also lists what was not measured and why. Read Foundation leveling and piering for background on level readings and settlement work.
Understand what an inspection does not do
An inspection is limited by what can be seen and measured at the surface. It does not see inside concrete, inside soil or behind finished walls. It cannot confirm the depth of a footing, the condition of buried reinforcement, or the exact soil type under a slab without further testing. It also is not an engineering design. An inspector may note a pattern and recommend further review, but the inspection itself does not design piers, beams, anchors or drainage systems.
That limit matters when a report is read. A report with no visible signs on the day of the visit does not prove that no movement will occur later, especially after drought or heavy rain. A report that finds a pattern does not by itself prove a cause, since soil moisture, plumbing leaks, tree roots and grading can all contribute. The American Society of Home Inspectors also explains structure and water around foundations for homeowners. See the ASHI page on structure and water around foundations. An inspection also does not price a repair outcome; a scope and method come from a provider after the findings are reviewed, in writing.
Read the report and ask before agreeing to work
Start with the summary, then check whether the body of the report supports it. Look for locations, measurements, photos and limits of access, and treat notes about a wall that could not be fully viewed as open items rather than as clearance. Compare findings across sections: water pooling at one corner and a crack near that corner is a connection worth asking about.
Before agreeing to work, ask the provider to explain the findings in plain words: which measurements support the proposed method, what will be measured again after the work, and what finish work is included. Ask which areas were not checked, and ask for the scope, method, materials and sequence of work in writing. Read Foundation crack repair for background on crack work. A second opinion can be useful when a report is thin or a proposed scope is large.
How our referral works
FoundationNear does not perform inspections and does not design repair work. It is a free referral service that connects a homeowner with an independent local provider for an on site visit. That provider is responsible for its own licensing, pricing and work, and for explaining its findings in writing, including the visit, the measurements and the report, before work is discussed.
Use the inspection report as the basis for any next step. Share it with each provider you speak with, so each proposal can be judged against the same measurements and photos, and keep questions focused on evidence, access limits and written scope.
See the home page for service pages that explain each repair method in more detail.
Sources
- ASHI, settling foundations causes and warning signs: https://www.homeinspector.org/settling-foundations-causes-warning-signs-repairs-for-inspectors/
- ASHI, structure and water around foundations: https://www.homeinspector.org/for-consumers/homeowner-resources/home-systems/structure/
- US EPA, managing water outside foundation walls and grading: https://www.epa.gov/indoor-air-quality-iaq/addressing-indoor-environmental-concerns-during-remodeling
Common questions
How long does a foundation inspection usually take?
Time depends on house size, access and how many signs need measuring. A small house with clear access may take less than an hour, while a larger house with a basement and crawl space may take longer. The written report often takes more time than the visit itself. Ask before the visit what the report will include and when you should expect it.
Should I be present during a foundation inspection?
Being present helps you see what the inspector sees and ask questions while the evidence is in front of you. You can point out doors that stick, floors that feel uneven or areas where water has appeared. You can also hear which findings are measurements and which are general observations. If you cannot be present, ask for photos, measurements and clear notes.
Does an inspection include checking under the house?
An inspector will usually check a basement or crawl space only where access is safe and clear. Low headroom, standing water, stored items or a sealed opening can limit that part of the check. The report should state which spaces were entered, which were viewed from an opening and which could not be checked. That note matters when you compare findings later.
What should I do after I receive an inspection report?
Read the report in full before you agree to any work. Note the measurements, photos and areas that were not checked. Compare the written findings with what the inspector said on site. Ask for the scope, method and finish work in writing if repair is proposed. Keep the report with dated photos so later checks can show whether a condition has changed.