Why pier and beam matters in Fort Worth
Fort Worth has an older housing stock than its suburbs. The Census Bureau puts the median home’s construction year at 1994, and 34% of the city’s homes date from before 1980; across Tarrant County the share is 33%. No public dataset counts foundation types by city, but raised floors over a crawl space are far more common in that older housing than in anything built recently.
Not sure what’s under yours? Look at the base of the outside walls. Vents, a small access door or skirting between the siding and the ground mean a crawl space, and a crawl space means piers and beams. Brick or siding that runs down to a concrete edge at ground level means a slab, covered on the slab repair page.
How a pier and beam house is built
The floor is a wooden frame of joists resting on beams. The beams sit on piers: concrete blocks on a wider base, poured concrete columns, or in very old houses, wood posts. Shims fill the gap between each pier and the beam above it. Underneath is a crawl space, open to air through the vents.
That design keeps the floor off the clay, which helps. But every part of it can move or wear out: the piers can settle, the shims can crush, and the wood can rot if the crawl space stays damp.
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What goes wrong
| Problem | What causes it | What you notice |
|---|---|---|
| Supports sinking or leaning | Water collecting under the house; the Foundation Performance Association says ponding can let the blocks move, settle, or tilt | A low area in one room, doors out of square |
| Beams sagging between supports | blocks placed too far apart under the beams, per the FPA, or a beam overloaded | A dip between two firm spots, cracked drywall above |
| Loose or crushed shims | Wood shims drying, rotting or compressing; seasonal clay movement under the piers | Floors that bounce or creak, gaps under baseboards |
| Rotted sills, joists or beams | A damp crawl space, poor ventilation, wood too close to the soil | Soft spots, sagging floors near exterior walls or plumbing |
| Clay swelling under interior piers | Wet soil under the middle of the house | A hump in the floor, doors binding in the center |
The repairs
The Texas ASCE guidelines list the usual pier and beam repairs as shimming, framing repair, new or added supports, and restored void space. In practice:
| Repair | What it involves | Published cost |
|---|---|---|
| Re-shimming | Jacking the beam and adding or replacing shims on sound piers; ASCE says shims may be hardwood or steel | $1,600 average (Angi) |
| Leveling with shims across the house | Re-shimming every support to bring the whole floor back toward level | $1,000–$3,500 (HomeGuide) |
| Adding piers | New supports where spans are too long or old piers have failed | $800–$4,000 per pier (Angi) |
| Replacing beams | Swapping a cracked, sagging or rotted beam | $400–$1,200 per beam (Angi); $1,500–$4,000 per beam (HomeGuide) |
| Framing repair | Replacing or sistering damaged sills and joists, with treated lumber recommended by ASCE | Priced by the job |
The two cost guides disagree on beam replacement by a wide margin. That usually reflects how much demolition, access and lumber the job needs, which only an inspection of your crawl space can show.
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Re-shim or rebuild?
Re-shimming alone may be enough when
- the piers are plumb and haven’t sunk,
- the wood is dry and solid,
- the floor dropped gradually and evenly, and
- the crawl space doesn’t hold water after rain.
Fix something else first when
- water stands or the soil stays muddy under the house: shims on moving piers won’t hold,
- piers lean or have sunk unevenly,
- beams or joists are soft, split or sagging between supports, or
- earlier shims are stacked high, a sign the floor has been chased downward for years.
A good plan explains which list your house fits and why.
Keep the crawl space dry
Most pier and beam trouble starts with water. ASCE lists the moisture controls for a crawl space as cross ventilation, under-floor drainage, ground clearance for beams and joists, and treated lumber. That means vents that aren’t blocked, gutters and grading that send roof water away from the house, and enough clearance that beams and joists aren’t touching damp soil.
Where water keeps reaching the crawl space, a drain may be part of the plan; HomeGuide puts an exterior French drain along one side at $1,200–$4,500. The drainage page covers the rest.
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Permits and paperwork
Fort Worth’s residential permitting page says all foundation repairs for residential structures need a building permit and plans from a licensed engineer, and its checklist asks for Engineered Foundation Plans + Engineered Structural Letter. Ask the contractor who pulls the permit and supplies the documents. If plumbing under the floor is moved or repaired along the way, that needs a separate plumbing permit.
Keep the plan, the permit and a note of every support that was shimmed, added or replaced. When you sell, a buyer’s inspector will look in the crawl space, and the records answer questions before they become price cuts.
What to expect afterward
Leveling an old house can open hairline cracks in plaster or drywall and leave a door or two needing adjustment. Floors that sagged for decades rarely come back perfectly flat; the Texas ASCE guidelines say perfection is not attainable by repair. The aim is a floor that’s close to level, supported on sound piers, over a crawl space that stays dry. For the full picture of what leveling can and can’t do, see house leveling.