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Peoria Foundation

Serving Peoria and nearby areas

Crawl Space Repair in Peoria, IL

Crawl space repair in Peoria for sagging floors and damp, musty crawl spaces, starting with a free inspection and a written price.

Call now: (309) 245-0953 or book your free inspection online

Book a free foundation inspection

Tell us what you are seeing. A local specialist calls you back the same business day.

Local to Peoria

We connect property owners in Peoria and nearby areas, including West Bluff, North Side, North Valley, South Side, Grandview Drive and East Peoria, with one independent local foundation repair specialist.

What it costs

Typical published ranges for Peoria. The contractor's written estimate is the price, and the inspection is free.

WorkTypical range
Crawl space inspection and written estimate Free
Crawl space repair, national range $500 to $7,500
Crawl space encapsulation $1,500 to $15,000
Encapsulation by area $3 to $10per square foot
Vapor barrier $1,500 to $4,000
Crawl space dehumidifier installed $750 to $2,000
Support beam replacement $1,500 to $5,000per beam
Floor joist replacement $100 to $300per joist
Mold removal in a crawl space $500 to $2,000

See typical foundation repair prices in Peoria

What a crawl space crew fixes

Many Peoria homes have a crawl space under all or part of the house. It is common under older homes, porches and add-on rooms. Here is what homeowners usually call about.

Soft or bouncy floors

The floor dips or feels springy when you walk on it.

Sloping floors

A marble rolls one way, or a door swings open on its own.

A musty smell

The house smells damp, mostly near the floor.

Water or mud in the crawl space

It shows up after rain or snow melt.

Mold or rot

You see white or black growth on the wood, or soft spots in the beams.

Pests

Bugs or mice like damp, dark crawl spaces.

Cold floors in winter

The floor over the crawl space stays cold.

Why crawl spaces struggle in Peoria

The ground under a crawl space is bare soil. In Peoria, much of that soil holds water. In spring, the wet layer can sit just a foot or two below the surface. That water turns into damp air under the floor.

Summers here are warm and humid, and when that air flows in through open vents, it can leave moisture on the cool wood and ducts. Over time, damp wood gets soft, and mold can grow.

Winter adds its own trouble, since the ground freezes deep in Peoria. Posts and pads that are not set deep enough can shift with frost. Older crawl spaces often have posts on small pads or old block piers, and those can sink or lean.

Many homes in Peoria are decades old. A crawl space that has gone 70 years with no liner and no drain has had a lot of time to get damp.

How a local crew fixes a crawl space

The contractor we connect you with will look at the wood, the ground, the walls and the air. Then they will explain the options and put the plan in writing.

Fix the supports

For sagging beams, the crew can set steel posts on solid pads and slowly jack the floor back up. Cracked or rotted joists can be sistered, which means a new board is bolted next to the old one, or replaced.

Lay a liner

A heavy plastic liner covers the dirt floor. In a full seal, the liner runs up the walls and gets taped at every seam. This blocks ground moisture from rising into the space.

Close the vents and dry the air

In a sealed crawl space, the vents are closed and a dehumidifier keeps the air dry. Some crews also add insulation to the walls.

Drain the water

If water comes in, the crew may add a drain and a sump pump in the crawl space. They also check gutters and downspouts outside, since that is often where the water starts.

Clean up mold and rot

If mold is present, it gets cleaned and treated, and rotted wood gets replaced. Then the space is dried out so the mold does not come back.

Crawl space or basement?

Some Peoria homes have both, with a basement under the main house and a crawl space under an addition. The two can move in different ways. That can leave a crack where the old part meets the new, so a good inspection checks both. If you also have a basement, see foundation repair and basement waterproofing.

Signs your crawl space needs work soon

Some crawl space problems can wait a season. Others get worse fast. Get a free look soon if you notice any of these.

A floor that keeps sinking

A dip that grows over a few months means a post or beam is still moving.

Standing water after storms

Water that sits under the house for days keeps the wood wet.

Soft or crumbling wood

Wood that you can push a screwdriver into has started to rot.

Mold you can see

Growth on the joists or the bottom of the floor spreads in damp air.

A new crack where an addition meets the house

The two parts may be moving apart.

If you are not sure, a photo from the crawl space door helps. The crew can tell you on the call if it sounds urgent.

What it costs

Price depends on the size of the crawl space, how hard it is to get into, and how much wood needs work. The ranges on this page come from published guides, including Fixr and This Old House. They are typical ranges, not a quote for your home. Your written estimate lists each part of the job. See the Peoria cost guide for more.

What a good crawl space inspection covers

Floor levels

The crew checks how much the floor sags and where.

Beams, posts and joists

They look for sagging, cracks, rot and sinking posts.

Moisture

They measure the wood and check for standing water or mud.

Mold and pests

They look for growth, droppings and damage.

Vents, ducts and insulation

They check what is open, what is wet and what is falling down.

Outside

They check gutters, downspouts and the slope of the yard.

A written plan

You get the fix, the price and the warranty on paper.

Frequently asked questions

How much does crawl space repair cost?

One national guide puts crawl space repair at about $500 to $7,500. Sealing a crawl space, called encapsulation, runs about $1,500 to $15,000 and averages about $5,500. Your exact price comes in writing after the free inspection.

Why does my floor feel soft or bouncy?

The beams, posts or floor joists under it may be sagging, cracked or soft from moisture. Posts can also sink if the pad under them is too small. The crew checks each one.

Do I need to seal my crawl space?

Not always. If the crawl space is damp, smells musty or has mold, sealing it with a heavy liner and a dehumidifier helps. If it is dry, a simple ground cover may be enough.

Should crawl space vents be open or closed?

It depends on the setup. Open vents let in humid summer air, which can make a crawl space damper. Sealed crawl spaces close the vents and use a dehumidifier. Ask the inspector what fits your house.

Can a crawl space affect my upstairs air?

Yes. Air from the crawl space moves up into the house. A damp crawl space can bring musty smells and moisture into the rooms above.

Does a crawl space let in radon?

It can. The Peoria City/County Health Department lists crawl spaces among the ways radon enters homes. A sealed liner helps, but a radon test tells you your level.

Can I stay home during the work?

Yes. Crawl space work happens below the floor. You may hear some noise, and the crew needs a clear path to the crawl space door.

Get your crawl space checked for free

Damp wood and sagging beams get worse with every wet season. Call (309) 245-0953 or send the short form. A local crew will call you back, usually the same day. The inspection is free, the price comes in writing, and the choice is yours.

Other services

Areas we serve around Peoria

(309) 245-0953 Free inspection