Cost guide · 2026

Pier and beam foundation repair cost

If you own one of the pre-war houses in East Dallas, the Houston Heights, central Austin or King William, you own a foundation that was designed to be adjusted. That is genuinely good news for your budget. The costs to watch are not in the leveling — they are in what the crawl space has done to the timber.

What you are likely to pay

$4k–$12k Whole-house re-level
$1.5k–$5k Per sill beam replaced
$300–$1k Per pier replaced
About these figures

Foundation Repair IQ does not quote prices and does not perform repairs. The figures below are general industry ranges published for orientation only — not quotes, not estimates for your property, and not binding on any contractor. Foundation pricing is set by the contractor after an on-site evaluation, and your actual cost may fall outside any range shown here.

Work General range Notes
Partial re-level, one section $1,500 – $4,000 Shimming and resetting a limited area
Whole-house re-level $4,000 – $12,000 The common figure for a typical home
Replace a settled pier $300 – $1,000 each Depends on footing depth and access
Add new piers where spacing is inadequate $500 – $1,400 each Common in houses altered over time
Sill beam replacement $1,500 – $5,000 per beam Often the biggest line on an old house
Floor joist repair or sistering $300 – $1,200 each Rot, sag, or previous plumbing butchery
Sub-floor replacement $8 – $20 per sq ft Where moisture has got into the decking
Crawl space vapor barrier $1,000 – $3,000 High value for the money
Full crawl space encapsulation $5,000 – $15,000 Sealed liner plus dehumidification
Crawl space drainage $1,500 – $6,000 Where water actually enters
Helical piers under a beam $1,400 – $2,500 each Where soil will not support a new footing

General industry ranges weighted to the Texas market. Not quotes — real pricing comes from getting underneath the house and looking.

Why the leveling is the cheap part

A pier and beam house is a wooden floor structure carried on piers over a crawl space. When a pier settles or a beam sags, the correction is mechanical and reversible: jack the structure, reset or replace the failed support, shim to level, lower it back. No concrete is broken, nothing is tunnelled, and the interior is largely undisturbed.

Compare that with the equivalent slab job, where installing a single interior support point means either cutting through the concrete floor or hand-digging a tunnel underneath at $150 to $250 per linear foot. A whole pier and beam re-level can cost less than interior access alone on a slab.

The catch is that a crawl space is an exposed environment, and eighty or a hundred years of it takes a toll on timber. Which brings us to the part that does cost money.

Pier and beam substructure, labelled Cut-away of a raised floor structure: sub-floor decking over floor joists, joists carried on sill beams, sill beams bearing on masonry piers with footings, above a crawl space with a vapor barrier over bare ground. Rot typically starts where a beam meets a pier and where ground moisture is highest. finished floor sub-floor floor joists sill beam pier footing crawl space ventilation matters vapor barrier Where rot starts bearing points, and anywhere the ground under the house stays damp
On a pier and beam house the leveling itself is usually the cheap part — the structure was built to be shimmed. The expense is in the timber: a sill beam that has rotted where it bears on a pier, or joists that have been notched and weakened by decades of plumbing and HVAC work. Both trace back to moisture, which is why a vapor barrier and correct drainage outside protect the things that actually cost money to replace.

The real expense: rot, moisture and previous repairs

Sill beams. The sill sits directly on the piers and carries everything above it, which makes it the most important timber under the house and the one closest to ground moisture. Rot typically starts at the bearing points, or wherever a downspout has been discharging into the same square foot of dirt for thirty years. Replacing a beam means temporarily supporting the house while it comes out, which is most of the $1,500 to $5,000.

Joists and sub-floor. Sagging floors in an old house are often a joist problem rather than a pier problem, and a surprising amount of joist damage is man-made: notches cut for plumbing and HVAC runs by people who did not think about what the joist was doing. Sistering a joist runs $300 to $1,200.

What the last contractor did. Crawl spaces accumulate history. Dry-stacked concrete blocks, timber offcuts, car jacks left in place as permanent support, piers bearing on nothing in particular — all common finds under houses that have been "leveled" cheaply before. Correcting improvised supports is often part of doing the job properly.

Moisture is the whole game

Nearly every expensive pier and beam repair traces back to water: a damp crawl space, poor grading, a downspout in the wrong place, or a plumbing leak. A vapor barrier at $1,000 to $3,000 and correcting the drainage outside are the highest return-on-investment things you can do to a house like this, and they are cheap relative to replacing the timber they protect.

Texas neighborhoods where this is the normal foundation

Pier and beam is the pre-war default across Texas, so this is largely a question of housing age. The Dallas–Fort Worth stock is concentrated in the M Streets, Lakewood, Munger Place, Oak Cliff and Fort Worth's Fairmount and near south side. In Houston it is the Heights, Woodland Heights and Montrose — where raised foundations were a sensible answer to flat, wet ground, and where crawl space moisture is a bigger factor than anywhere else in the state. Austin has it through the central neighborhoods, and San Antonio in King William, Lavaca, Monte Vista and Dignowity Hill — several of which sit in local historic districts that can add a review step for exterior work.

Crawl space foundation repair, and where it overlaps

Crawl space foundation repair and pier and beam repair describe overlapping work, and estimates use the terms loosely. Pier and beam repair usually means the structural half — piers, beams, joists, leveling. Crawl space repair usually means the environment those things live in — the vapor barrier, the drainage, the ventilation, and encapsulation where it is warranted.

They are worth separating when you read a quote, because they fail on different timescales. Structural work fixes what has already gone wrong. Crawl space work is what stops it going wrong again. A quote covering only the first is not wrong, but it is half a plan.

What to ask before you sign

  • Have they been under the whole house? Not just the accessible half. The condition report should cover every beam and pier line.
  • Are the floor elevations measured? Same standard as slab work — numbers, not impressions.
  • What happens if they find rot? Timber repair is frequently written as an allowance or an exclusion, because nobody knows what is in there until they look. Find out which, and what the unit rate is.
  • Are they addressing the water? A re-level without a moisture fix in a damp crawl space is a repair with a short shelf life.
  • What is the target? Perfectly level is rarely achievable or even desirable in a hundred-year-old house — forcing it can crack plaster and break things that were happily settled. Ask what tolerance they are aiming for and why.
These are estimates, not quotes

Pier and beam pricing varies more than slab pricing because so much of it depends on the condition of timber nobody can see until the crawl space is opened. Treat every figure here as a planning range and expect a real estimate to be built from an actual inspection.

Pier and beam cost questions

How much does it cost to re-level a pier and beam house?

A whole-house re-level typically runs $4,000 to $12,000, and the spread inside that range is mostly about what the crew finds once they are underneath. A straightforward job — shimming, resetting a handful of settled piers, good crawl space access, sound timber — sits at the lower end. Add rotted sill beams, failed joists, a crawl space you can barely get into, and piers that a previous owner replaced with concrete blocks stacked dry, and you move up quickly. Partial re-levels of one section commonly run $1,500 to $4,000.

Is pier and beam cheaper to repair than a slab?

Usually, yes — and it is one of the few genuine advantages of an older house. A pier and beam structure was built to be adjusted: the house sits on a wooden floor system supported by piers over a crawl space, and a crew can get underneath, replace what has failed, and shim the structure back toward level without breaking any concrete. Slab repair means installing support points beneath a monolithic piece of concrete with a house on it, and interior access alone can cost more than an entire pier and beam re-level. The offsetting risk is what a crawl space exposes: moisture, rot, and pests, which a slab does not have.

What does it cost to replace a sill beam?

Typically $1,500 to $5,000 per beam, and it is frequently the real expense in an older home rather than the leveling itself. The sill beam sits directly on the piers and carries the floor structure, which makes it both the most important timber down there and the closest one to ground moisture. Rot usually starts where a beam sits on a pier, where a downspout has been discharging for thirty years, or anywhere the crawl space stays damp. Replacing one means temporarily supporting the house above it, which is most of the labor.

How often does a pier and beam house need re-leveling?

There is no schedule, but it is normal for one of these houses to be adjusted a few times across its life — every fifteen to thirty years is a reasonable expectation in expansive clay, and more often where drainage is poor. A hundred-year-old house in East Dallas or the Houston Heights that has been shimmed three times is behaving the way the design intends rather than failing. What is not normal is needing it every few years, which usually points at a cause that has not been addressed: a drainage problem, a plumbing leak, or piers bearing on soil that was never adequate.

Do I need to do anything about crawl space moisture?

In Houston and much of the Gulf Coast it is close to essential, and elsewhere in Texas it is worth taking seriously. A damp crawl space rots the timber the house is standing on, which turns a cheap leveling job into an expensive structural one over time. Options run from a vapor barrier over the ground ($1,000 to $3,000 for a typical crawl space), through drainage and grading correction outside, to full encapsulation with a dehumidifier ($5,000 to $15,000). The vapor barrier is the high-value low-cost intervention and is usually where to start.

Can I convert a pier and beam house to a slab?

It is technically possible and almost never a good idea. It means lifting the house, demolishing the existing substructure, pouring a new slab and setting the house back down — a project in the tens of thousands that trades an adjustable foundation for one that is not, in soil that moves. The recurring reason people ask is crawl space problems, and those are nearly always cheaper to solve directly with drainage, a vapor barrier, and repairs to the timber than by replacing the entire foundation system.

Related: full foundation repair cost guide · slab foundation repair cost · foundation repair in Texas

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