Lally column replacement typically costs $700-$2,000 per column when a contractor removes an existing post and installs a properly sized replacement. A small, accessible job may cost less, while temporary shoring, a new footing, difficult access, or structural repairs can push the project above $3,000 per post.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed column replacement | $700 | $1,350 | $2,500 | Per column, standard basement access |
| Steel column material | $100 | $250 | $500 | Per post; length and load rating affect price |
| Labor and removal | $400 | $850 | $1,500 | Per column, excluding major structural repair |
| New concrete footing | $300 | $700 | $1,500 | Per footing when existing support is inadequate |
| Engineering and permits | $250 | $650 | $1,500 | Project-dependent fees |
What one basement Lally column replacement costs
For one standard basement post, a common installed price is $700-$2,000. The lower end generally assumes a sound footing, ordinary ceiling height, clear access, and a replacement column that fits the existing support point. A two- or three-column project may average $1,200-$1,500 per post because setup and shoring costs are shared.
Prices assume a contractor supplies a rated steel column, temporarily supports the load, removes the old post, and installs the new one. A concrete-filled steel Lally column is not interchangeable with every adjustable jack post; the replacement must suit the load, height, connections, and applicable code. For a typical accessible basement with no footing work, budgeting about $1,000-$1,500 per column is a reasonable starting point.
Assumptions: U.S. midrange labor rates, standard steel replacement, normal basement access, and no major foundation damage.
How steel posts, shoring, and footing work shape the quote
A replacement estimate combines the post itself with controlled load transfer and installation. Labor is often the largest portion, especially when the contractor must install temporary supports before cutting out a load-bearing column. Ask whether the quote includes disposal, connection hardware, and finishing around the post.
| Quote component | Typical price | What changes the charge |
|---|---|---|
| Rated steel column | $100-$500 per post | Length, diameter, wall thickness, and load rating |
| Installation labor | $400-$1,200 per post | Shoring, crew size, and work time |
| Removal and disposal | $75-$300 per post | Cutting, concrete fill, and haul-away needs |
| Footing or base repair | $300-$1,500 per location | Excavation, concrete volume, and curing needs |
| Engineer or permit | $250-$1,500 per project | Local requirements and structural complexity |
Temporary shoring and footing corrections can cost more than the replacement post itself. At $75-$125 per hour, four to eight hours of two-person labor can account for roughly $600-$2,000 before materials and overhead.
Column height, load rating, and footing condition change the price
Post dimensions and the load carried above them determine what can safely replace an existing column. Many residential basement supports are roughly 7-9 feet tall, but a taller or unusually short opening may require a special-order post or modified connection. A heavier load, such as a beam supporting multiple floors, can require a higher-capacity column and engineering review.
The footing is another major threshold. If the existing concrete pad is cracked, undersized, or absent, a contractor may need to excavate and pour a new footing. Work involving a footing roughly 2 feet or more across, deeper excavation, or nearby utilities usually costs more than setting a post on a verified sound base. Do not choose a column by appearance or diameter alone; the load rating and support below it must be checked.
When an adjustable jack post costs less than a fixed column
Adjustable steel posts can be less expensive as a material, with common products around $50-$250, but a product price is not the full installed price. Permanent supports must meet local code and carry the required load. Some temporary jack posts are not approved for permanent structural use, even if their height and appearance seem suitable.
A fixed, concrete-filled Lally column may be more appropriate where a permanent support is required and the design calls for that type. Replacing a post with a beam or relocating it is a different structural project and may cost several thousand dollars or more. Compare installed, code-compliant options rather than comparing a contractor’s quote with the price of an uninstalled hardware-store post.
Why a single-post job costs more in tight basements
One-column projects can carry a higher per-post price than multi-post work because the crew still needs to mobilize equipment, assess the load, and set up temporary support. Low ceilings, narrow stairs, finished rooms, and limited room for jacks can add several hours. Removing a column embedded in a slab or surrounded by finished flooring can also require extra cutting and patching.
For straightforward access, installation may take about 4-8 labor hours for a small crew. Complicated shoring, concrete removal, or a footing pour can extend work into a full day or longer, with additional curing time before the support is loaded. Ask the estimate to identify crew hours, shoring, concrete work, and finish repairs separately.
Regional labor rates and permit costs across the U.S.
Local labor and inspection rules can move a quote substantially. Metropolitan areas with higher contractor rates may run 15%-35% above a rural-market estimate; remote locations can also cost more when specialized crews must travel. In many markets, a basic replacement may not require a permit, but structural alterations or new footings may trigger building review and inspections.
Engineering review commonly adds $250-$1,000 for a limited residential assessment, while more involved calculations or site visits can exceed that range. Permit charges vary by city and project value, often adding $50-$500 or more. Confirm permit responsibility and inspection fees before accepting a quote, since local rules differ.
Three Lally column quotes for common basement conditions
A single accessible post replacement with a sound footing might total $900-$1,500, including a standard steel column, shoring, removal, and about 4-6 labor hours. At a rough installed rate of $100-$200 per labor hour for a two-person crew, the total depends on the local rate and scope.
Replacing two posts in an unfinished basement could cost $1,600-$3,200 total, or about $800-$1,600 each, when the crew can share setup and disposal. Replacing one post and rebuilding its damaged footing may reach $2,000-$4,000, including excavation, concrete, and a possible engineering or permit charge. These examples exclude major beam repairs, finished-floor restoration, and hidden foundation damage.
How to lower the replacement price without cutting safety
Get at least two written quotes that specify column type, load rating, temporary shoring, removal, footing condition, disposal, and permit handling. If several columns need replacement, pricing them together can reduce setup costs. Clearing the route to the basement and moving stored items can also save labor time, but homeowners should not loosen, cut, or jack a load-bearing post themselves.
Ask whether a sound existing footing can remain and whether a code-compliant standard post meets the structural specification before paying for a premium product or relocating the support. Avoid choosing the lowest estimate if it omits load assessment or shoring. The safest savings come from limiting unnecessary scope while keeping engineering, support, and code requirements intact.