The Indiana Homeowner’s Foundation & Crawl Space Inspection Checklist

Most foundation and moisture problems don’t announce themselves. They start as a door that sticks in August, a smell in the laundry room, or a hairline crack nobody thought twice about. By the time the symptom is obvious, the cause has usually been at work for a while.

This checklist is a way to catch those things earlier. It’s written for Central Indiana homes specifically, because the conditions here — clay-heavy soils that hold water, wet springs, and winter freeze-thaw cycles — produce a predictable set of problems that homes in drier or sandier regions don’t see as often.

Nothing here requires tools or expertise. Walk your house twice a year with this list and you’ll know more about its condition than most homeowners ever do.

How to Use This Checklist

Go through it section by section, once in spring and once in fall. Write down what you find, including the date, and photograph anything that looks questionable.

A single crack tells you very little. The same crack photographed six months apart tells you whether your house is moving. That documentation is the most valuable thing on this page — if you ever need a professional opinion, or need to explain a condition to a buyer, an insurer, or a home inspector, a dated record beats a description from memory every time.

Download the printable version — a two-page checklist with checkboxes and space for inspection dates. Free to print and share. [Insert PDF link]

Foundation Warning Signs

Inside the house

• Cracks in drywall, especially running diagonally from the corners of door and window frames
• Doors or windows that stick, drag, or won’t latch when they used to close cleanly
• Floors that slope, bounce, or feel uneven underfoot
• Gaps opening between baseboards and the floor, or between crown molding and the ceiling
• Cracks in ceiling corners
• Nail pops or seams showing through drywall
• Cabinets or countertops pulling away from the wall
• Cracks in tile or grout that run in a straight line across the floor

In the basement or on foundation walls

• Horizontal cracks — these matter more than vertical ones and indicate lateral pressure from the soil outside
• Stair-step cracks following the mortar joints in block or brick walls
• Walls that bow, lean, or bulge inward
• Vertical cracks that have widened over time, or that you can fit a coin into
• Cracks that leak during rain
• Powdery white mineral deposits on the wall surface

Outside the house

• Cracks in exterior brick or masonry, particularly stair-step patterns
• Gaps between the chimney and the house
• Separation where an addition, porch, or garage meets the main structure
• Soil pulling away from the foundation wall
• Concrete steps, patios, or driveway slabs that have sunk or tilted
• Gaps around exterior door and window frames

Vertical hairline cracks in poured concrete are common and often just shrinkage from the original cure. Horizontal cracks, stair-step patterns, and anything actively widening are the ones worth acting on.

Crawl Space Moisture Warning Signs

If you have a crawl space, look in it. Twice a year, with a flashlight. Most people never do, which is exactly why crawl space problems tend to be well advanced by the time they’re discovered.

What you’d notice from inside the house:

• A musty or earthy smell, often strongest in rooms above the crawl space or near floor vents
• Floors that feel cold, soft, or springy
• Higher-than-usual humidity on the main floor
• Allergy or respiratory symptoms that improve when you leave the house
• Heating and cooling bills climbing without a change in usage

What you’d see in the crawl space itself:

• Standing water or damp soil
• Condensation on ductwork, pipes, or the underside of the subfloor
• A vapor barrier that’s torn, shifted, or missing entirely
• Wet, compressed, or fallen insulation
• Visible mold on joists, subfloor, or the foundation wall
• Wood that’s dark, soft, or crumbles when pressed
• Sagging floor joists, or joists that have pulled away from supports
• Rust on metal fasteners, ducts, or supports
• Evidence of pests — droppings, nests, chewed insulation

Photograph the same spot every visit. Moisture damage is gradual, and comparison is how you see it.

Basement and Water Intrusion Warning Signs

• Water on the floor after heavy rain, even if it dries within a day
• Damp spots or dark staining at the joint where the wall meets the floor
• Brown or yellow water stains on walls
• Efflorescence — that chalky white residue — on block or concrete
• Peeling or bubbling paint on basement walls
• Rust at the base of appliances, support posts, or metal shelving
• A sump pump that runs constantly, or one that never runs at all during wet weather
• Musty odors that return after cleaning
• Warped or cupped flooring in finished basement space
• Visible mold on walls, in corners, or behind stored items

Check the exterior too, since a large share of basement water problems start above ground:

• Does soil slope toward the house or away from it?
• Do gutters overflow during rain?
• Do downspouts discharge within a few feet of the foundation?
• Does water pool against the house and stay there after a storm?
• Are window wells holding water or full of debris?

The Seasonal Indiana Checklist

Spring (March–May)

Spring is the highest-stress season for Central Indiana foundations. Saturated clay expands, groundwater rises, and any drainage weakness shows itself.

• Walk the perimeter during or right after a heavy rain and watch where water actually goes
• Check the basement and crawl space for new water
• Test the sump pump — pour a bucket of water into the pit and confirm it runs
• Clear gutters of winter debris
• Look for cracks that appeared over winter
• Check for soil that settled or washed out against the foundation

Summer (June–August)

Dry stretches shrink clay soil, pulling support away from the foundation — the opposite stress from spring.

• Look for soil separating from the foundation wall
• Watch for doors and windows that suddenly stick
• Check crawl space humidity; summer is peak condensation season
• Confirm the crawl space dehumidifier, if you have one, is draining
• Don’t let landscaping beds hold water against the house

Fall (September–November)

• Clear gutters and downspouts after the leaves drop, then again in late fall
• Extend downspouts to discharge at least four to six feet from the foundation
• Regrade any low spots where soil has settled against the house
• Do your second full crawl space inspection of the year
• Compare photos against your spring visit
• Service the sump pump before winter

Winter (December–February)

Freeze-thaw cycling is the season’s main mechanism — water gets into a crack, freezes, expands, and widens it.

• Watch for ice damming at the roofline and ice buildup at the foundation
• Check that downspout extensions haven’t frozen shut or been knocked loose
• Keep snow piled away from the foundation where practical
• Note any new cracks; winter is when existing ones grow
• Watch for doors that begin sticking as the ground freezes and heaves

What You Can Handle Yourself

A meaningful share of what shows up on this list has a simple fix, and a reputable contractor will tell you so:

• Extending a downspout
• Cleaning gutters
• Adding soil to regrade a low spot away from the house
• Clearing a window well
• Replacing a shifted vapor barrier panel
• Running a dehumidifier in a damp basement

Start there. If the problem resolves, you’ve saved yourself a project.

When to Schedule a Professional Inspection

Worth scheduling soon:

• A horizontal crack in a foundation wall
• A wall that is bowing, leaning, or bulging
• A crack that has visibly widened between your spring and fall checks
• Standing water in a crawl space or basement that doesn’t drain
• Floors that are actively sagging or soft
• Visible mold across a significant area
• Doors and windows across multiple rooms that have all started sticking
• Any crack wide enough to fit a coin into

Worth monitoring, not panicking about:

• A single hairline vertical crack in poured concrete
• One door that sticks seasonally and releases when the weather changes
• Minor efflorescence with no active water
• Slight dampness during an unusually wet stretch

The distinction is movement. Static conditions can be watched. Conditions that change between checks should be looked at.

What an Inspection Should Involve

A professional assessment should identify the cause, not just catalog the symptoms. Expect an inspector to examine interior and exterior conditions, check floor levels and door operation, evaluate crack patterns, look at grading and drainage, and get into the crawl space.

Expect a written explanation of what’s driving the problem and why the recommended repair addresses it. If a contractor recommends a solution without explaining the cause, get a second opinion. That applies to foundation repair, crawl space repair, and basement waterproofing equally.

Use and Share This Checklist

Realtors, home inspectors, property managers, and neighborhood associations are welcome to print, share, and link to this checklist. The printable version is free to distribute. If you’d like a batch for client packets or a community event, contact us and we’ll send them.

Healthy Home Foundation Repair serves Indianapolis, Carmel, Fishers, Greenwood, Lawrence, and Lafayette. Inspections are free, and if what you’re seeing doesn’t need repair, we’ll tell you that.

Frequently Asked Questions

How often should I inspect my foundation and crawl space? Twice a year is enough for most homes — once in spring after the ground has thawed and drained, and once in fall before winter. Add a check after any unusually heavy rain or a major storm. Documenting each inspection with dates and photos is what makes the routine useful, because it lets you compare conditions over time.

Are all foundation cracks a sign of a serious problem? No. Vertical hairline cracks in poured concrete walls are common and often result from normal shrinkage as the concrete cured. The cracks that warrant attention are horizontal cracks, stair-step cracks along mortar joints in block walls, cracks wide enough to fit a coin into, and any crack that has visibly widened since your last check.

How can I tell if a crack is getting worse? Photograph it next to a ruler or coin for scale and note the date. Compare the same spot at your next inspection. Movement over time is the meaningful signal — a crack that looks identical six months later is behaving very differently from one that has grown, even slightly.

Is it safe to go into my own crawl space? Many homeowners can inspect their own crawl space with a flashlight, sturdy clothing, gloves, and a mask. Don’t enter if you see standing water near electrical wiring, extensive mold growth, signs of pests or animals, or if access is too tight to move safely. In those cases, have someone inspect it for you.

How do I know whether I have a foundation problem or a water problem? They frequently occur together, since soil that stays saturated puts more pressure on foundation walls. As a rough guide, sticking doors, sloping floors, and stair-step or horizontal cracks point toward structural movement, while staining, efflorescence, musty odors, and seepage at the wall-floor joint point toward water intrusion. If you’re seeing both, the structural question should be answered first.

What should I do before an inspection appointment? Bring your notes and photos, clear access to the basement walls and crawl space entry, and make a list of what you’ve observed and when. An inspector working from a documented history can give you a far more useful assessment than one working from a single visit.