A basement or foundation inspection should begin with history and timing, examine the interior and exterior, document foundation material, water paths, cracks, wall shape, drainage, sump, utilities and access, and explain what is known versus uncertain. The outcome may be a service proposal, recommendation for monitoring, or referral to plumbing, restoration, mold, radon or structural engineering.
What to know
- Prepare dates, photos, prior repairs and weather history.
- Allow access to the full symptom and relevant exterior wall when practical.
- Ask whether the visit is a sales estimate, contractor diagnosis or engineering inspection.
- The proposal should explain source, method, scope, exclusions and verification.
Before the visit
Write down when the problem first appeared, whether it repeats, what the weather was doing, and any plumbing, power or renovation changes. Gather previous proposals, warranties, engineering reports and photos taken during the event. Do not recreate a leak or enter an unsafe area for documentation.
Move ordinary contents enough to reveal the affected wall if safe and practical. Tell the provider about finished walls, suspected regulated materials, pets, tenants, access restrictions and known electrical or structural hazards.
Interior review
The inspector may examine wall and floor locations, foundation material, crack orientation and displacement, moisture patterns, efflorescence, framing, utilities, window wells from inside, drainage channels, sump pit, pumps and discharge piping. Structural concerns may require measurements of wall position or floor elevation.
A moisture meter, level or other instrument can support findings, but a reading without context is not a diagnosis. Ask what was measured, where and how it affects the recommendation.
Exterior review
The relevant exterior area should be checked for roof runoff, downspouts, grade, low spots, hard surfaces, window wells, visible cracks, additions, utilities and drainage outlets. Buried systems may not be traceable without additional investigation.
A town name or general soil claim should not replace parcel observation. Water behavior is property-specific, and conditions can change with landscaping, construction and maintenance.
The written result
The proposal should identify the condition being addressed, method, quantities, materials, preparation, discharge, electrical or permit responsibility, finish restoration, schedule, maintenance, warranty and exclusions. Structural or remediation boundaries should be explicit.
Compare proposals by scope. If two contractors diagnose different causes, ask each to explain the evidence and consider an independent engineer or specialist before a major investment.
What each part of the inspection looks for
A foundation inspection is more than a look at cracks. It compares what is inside, what is outside and what the house has done over time, then writes down what could not be seen so nobody assumes it was checked.
Ask what the written result will contain before the visit. A useful report separates what was observed from what is opinion, lists what could not be inspected and gives a reason for each recommendation. A report that lists only conclusions leaves you unable to tell whether two contractors are reacting to the same evidence.
| Step | What is observed | What is written down |
|---|---|---|
| Interior walls and floor | Cracks, staining, bowing, efflorescence and moisture | Locations, width, direction and whether marks are active |
| Exterior grade and drainage | Slope, downspouts, window wells and hard surfaces near the wall | Where water is delivered to the foundation |
| Framing and supports | Posts, beams, sills and joist ends | Condition, moisture and signs of settlement |
| Mechanical systems | Sump pump, discharge, floor drains | Function and any missing backup |
| Limits of the inspection | Finished walls, stored items, snow cover | What could not be seen |
Sources and Vermont specifics
What the estimate that follows an inspection has to contain
An inspection should end with an estimate you can act on, and in Vermont the estimate becomes a contract with legal minimums when the work is valued at $10,000 or more. Registered residential contractors attest that their written contracts include the price, work dates, scope of work and a change order provision. If the paperwork you receive after the visit omits any of them, ask for a revised version before you compare it to another.
Bring the inspector two things: a dated set of photographs and a list of when water or movement appeared. Ask them to write down what was measured, what was only observed and what remains uncertain. A visit that produces a proposal, a monitoring recommendation or a referral to another trade is doing its job.
Ask, before the visit, how long it will take and who will attend. A useful inspection of a whole basement and its exterior generally needs enough time to walk the perimeter, open the sump, look at the utilities and talk through the history. A ten-minute walk-through that ends in a price is a sales estimate. Both have a place, as long as you know which you are getting.
Sources: Vermont Secretary of State, Residential Contractor FAQs. Checked September 26, 2026.
Frequently asked questions
How long should a foundation inspection take?
Long enough to look at the interior, the exterior, the drainage and the structure above, and to record what was found. A visit that produces a price without examining the exterior grade, roof discharge and sump has skipped the parts that most often explain the water.
How long should an inspection take?
Time depends on the property and issue. A useful visit must cover history, the affected interior, relevant exterior, drainage and equipment. A complex structural or finished-basement problem should not be rushed to fit a fixed sales script.
Will the inspector open finished walls?
Not without authorization. Limited opening may eventually be needed to trace a leak or inspect a crack. Ask who performs it, how regulated materials are considered and who restores finishes.
General information, not a diagnosis of your property. Editorial policy