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Average Repair Cost For Beam And Pier Foundations Repair In 2023 

Depending on several important aspects, the cost to repair a pier and beam foundation can range from $30,000 to more on average in 2023. The cost of the job is influenced by the size of your house, foundation settlement, labor costs, the root of the issue, and accessibility. You may read more about different cost factors when fixing the foundation and the reasons why beam and pier foundations collapse below.

What Is A Pier And Beam Foundation?

Slab or pier and beam foundations are used frequently in American home construction. Look to see if your home has a crawl space to establish what kind of foundation it has. If you discover one there, it was probably constructed using a pier and beam foundation.

The terms post and beam and pier and beam foundations are interchangeable as they are built by laying wooden beams across a grid of concrete piers that raise a house above the ground.

What Is The Cost Of Pier And Beam Foundation Repair?

The type of work required will determine how much it will cost to repair a post and beam foundation. Additionally, it could involve a lot of labor in small areas, increasing prices. Given this, the price can range from $1,000 for minor maintenance and repairs to more than $30,000 for significant structural work.

Consider the following estimates to get a sense of the costs:

  • Adjustments and reshimming range in price from $1,000 to over $7,000.
  • Repairing and constructing new piers ($4,000 to $6,000)
  • (between $10,000 and $20,000) Beam replacement
  • ($5,000 to $15,000) Adding support jacks
  • Existing pier underpinning ($30,000 and up)
  • It’s crucial to remember that these cost forecasts are merely estimates. For a precise price quote on your project, get in touch with our experts.

Why Does Repair Of Pier And Beam Foundation Cost So High?

They require a lot of hours to repair, hence they are expensive to fix. Work is challenging in a small, dim crawl area. Additionally, these kinds of buildings frequently contain rotting timber components that need to be replaced. Wooden joists and beams may get expensive very quickly. The cost of installing foundation piers or block and base supports underneath a pier and beam house may easily go up to $6,000 or more. The kind of foundation piers used may also have an impact on overall expenses. 

Benefits Of Pier And Beam Foundation

The advantages of a post-and-beam foundation include:

Moisture management

This type of foundation elevates a house or other building above the earth, resulting in a crawl space underneath. Better ventilation is made possible by the distance between the floor and the ground, which helps to regulate moisture. This function guards against rot, mold growth, termite infestation, and other moisture-related problems.


Utility workers have easier access to plumbing and other utilities with this foundation’s crawl space than they would with a slab foundation. Professionals may more easily access pipes, wiring, and HVAC fixtures, making inspection, installation, and maintenance more convenient.

Improved Stability

Pier and beam foundations offer more stability, particularly when houses are constructed in regions with varying soil types. On each pier, the load and weight of the entire structure are distributed equally. The possibility of differential settlement is decreased by this approach. Due to this, places with a lot of clay soil or land that is prone to soil movement frequently use post and beam foundations.

Flexibility and Adaptability

More design and construction freedom is possible with this foundation type. The modularity of the piers and other elements allows structural designers to adapt, change, and tweak the foundation design to match different surface areas. The foundations can also be expanded upon as necessary. This degree of adaptability is quite helpful for renovation and expansion projects.

Better Insulation

The presence of a crawl space under a house has another advantage. Better insulation can be made in the area, which will increase your home’s energy efficiency. The crawl space is beneficial because it minimizes heat gain or loss via the floor. Additionally, it might act as a barrier against chilly flooring in the winter.

Improved Leveling

The adaptability of post and beam foundations is another benefit. Over time, soil settlement may take place, which could affect how level a foundation is. The foundation and other structures may develop fractures as a result of the soil movement. The afflicted piers can be strengthened as necessary with this foundation design, which lessens structural problems. This technique also aids in preserving the structural integrity of a house or structure.

Types Of Pier And Beam Foundations

For this kind of foundation, horizontal beams are supported by piers or vertical columns. Based on the original plan, there are various post and beam foundation types, including:

Blocks of concrete

Concrete blocks are placed one over the other in this design. The concrete blocks are then strengthened with steel by contractors, providing a solid foundation for beams. For regions with level load-bearing soil or strata, this design works best. If the surface of your lot is solid and stable, this type of foundation is a great choice.

Brick Piers

The original design mentioned previously is identical to this one, however, it uses solid cylindrical columns. To produce pre-dug holes, contractors drill shafts into the ground. Then, these shafts are filled with the concrete for the piers. These pier styles offer great support for later-installed beams.

Timber Piers

Traditional residences with wood posts or wooden pilings are built using this style. The foundation’s timber has been treated to prevent insects, deterioration, and wood rot. This kind of foundation may be a sensible choice if you’re building smaller homes.

Steel pilings

Homeowners might choose to construct their homes using steel piers in addition to wood or concrete. To support the beam and foundation, contractors utilize vertical steel columns. The columns must be driven into the ground using hydraulic gear. When working on a foundation, this method can be a great choice, especially if the soil is unstable or weak.

Caissons with holes

For foundation designs, soft soil and moist regions are ideally suited, such as caisson buildings. It is frequently employed in the construction of docks, bridges, and other structures next to waterways. Concrete-filled watertight cylinders are used in this technique. To provide a solid foundation for the caissons, holes are bored in the earth where they will be installed.

Pier And Beam Foundations: Why Do They Fail?

Foundations can be harmed, corroded, and fail due to a variety of problems. Pier damage causes floors to become unlevelled, leading to sinking, cracking, and sagging.

The following are some of the most typical reasons for post and beam failure:

  • earthquake activity
  • poor construction methods
  • lack of water mitigation 
  • soil’s heaving and sinking The earth’s lateral movement against the foundation
  • shoddy soil compaction
  • tree roots that have the potential to dry up the soil
  • degrading of the soil
  • faulty drainage

What Might Need Pier And Beam Foundation Repair? 

To stop future harm to your property, foundation issues must be fixed immediately. Structural problems could jeopardize a building’s stability and safety if they are not addressed. Sagging floors and fissures in the walls, floors, or foundations are some warning indicators to look out for. Plumbing problems, leaks, and moisture buildup occasionally serve as warning indications of a post and beam foundation that needs repair.

5 Techniques for Fixing Pier and Beam Foundations

The different techniques craftsmen can employ to fix a post and beam foundation include the following:

Leveling and Shimming

This procedure fixes sagging or uneven floors. Shims made of steel or composite are installed between the beams by contractors to elevate the level of drooping parts.

Strengthening the Pier

An additional layer of support is added to existing piers that have shifted to ensure their structural soundness. Supports, brackets, or helical piers made of steel or concrete are used throughout this operation. These reinforcements aid in more equally distributing the weight among all piers.

Replace the beam

To maintain the stability and security of the foundation, deteriorating and damaged beams are replaced. The decaying or weak areas of the beams are carefully taken out and replaced with replacements that are the right size.

Moisture Control

Your home’s foundation is preserved in terms of strength and quality by taking care of moisture-related problems. Contractors strengthen moisture barriers and make sure there is adequate ventilation. The purpose of this procedure is to avoid moisture buildup. This also entails removing and replacing any wood components that are rotten or broken.

Foundation Supporting

A practice called underpinning strengthens the foundation of a house to stop additional settlement. To increase the stability and load-bearing capacity of the foundation, contractors can either build more piers or construct supports underneath the current piers, such as driven and helical steel piers.

Factors Affecting The Cost Of Pier And Beam Foundation Repair

The following factors, among others, will affect the price of repairing post-and-beam foundations:

The foundation’s dimensions and complexity

Larger foundations with more intricate designs will cost more to repair since they require more labor and resources. More piers, supports, and beams might be required to strengthen it.

How severe the damage is

The total cost of the required repairs may increase depending on the degree and scope of the foundation’s deterioration. Small problems like cracks or settling are simple to deal with. However, since they need major repairs, structural damage, and significant settlement will cost more.

Repair Process and Supplies

Depending on the amount of work needed to finish the job, underpinning, beam replacement, and pier reinforcement all have different costs. Include the price of the materials needed to restore certain constructions.

Site conditions and access

Your labor costs will be lower in areas with unobstructed crawl spaces and fewer obstacles. However, if workers must navigate restricted entryways, constrained areas, or landscaping obstacles, labor expenses would likely increase.

Perfect Time To Get Your Pier And Beam Foundation Repaired

Problems with the foundation must be fixed as quickly as feasible. Verify weather conditions, early discovery, and contractor availability. To repair the foundation of your house, seek advice from an experienced contractor such as Foundation MD. Call us now to schedule a free appointment.