Carbon fiber / steel straps. Strips bonded vertically to the inside face of the wall, anchored top and bottom, usually every 4 feet. They stop the wall where it is — they do not push it back. Because everything happens inside the basement, there is no excavation and no yard damage, and they can be painted or drywalled over afterwards. Straps run $350–$1,000 each (Angi, Jul 2026), and one industry cost breakdown puts a typical 20–24-foot wall at roughly five straps, or $1,750–$5,000 in total (Dura Pier, Apr 2026).

Wall anchors. A steel plate inside the basement is connected by a shaft to a second plate buried in the soil outside, then tightened. Anchors cost $400–$700 each and go in every 5 feet — about $80–$140 per foot (Angi, Jul 2026). Their advantage over straps: they can be re-tightened over the years, slowly pulling the wall back toward vertical. Their disadvantage: they need enough open yard to dig in.

Helical tiebacks. Steel screw-shafts drilled at an angle through the wall and out into stable soil, torqued to a specification. This is the heavy-duty option — $1,500–$1,800 per tieback, every 5 feet (Angi, Jul 2026). It is what you use when the bowing is severe or the soil pressure is relentless.

Wall straightening. None of the above makes the wall perfectly straight again. To do that a contractor excavates outside to relieve the soil pressure, jacks the wall back into position, then installs straps to hold it. Total: $340–$550 per foot (Angi, Jul 2026). Ask yourself honestly whether you need a straight wall, or just a wall that has stopped moving.

A horizontal crack across the middle of the wall. This is the signature. A horizontal crack is never cosmetic — it is the line the wall is folding along, and it usually appears at the point of maximum inward pressure.

Stair-step cracking in block walls. Cracks that follow the mortar joints diagonally, like steps, mean the blocks are moving relative to each other.

A visible bulge. Stand at one end of the wall and sight along it, or hold a 4-foot level against the middle. Any noticeable inward curve — especially more than about an inch — warrants a professional inspection.

The wall is leaning at the top or sliding at the bottom. Movement at the sill plate or the floor slab means the wall is no longer held at its ends.

New water where there was none. A wall that has moved has opened paths for water. Bowing and seepage frequently arrive together, and a good contractor will price both.

There is no reasonable DIY version of a bowing wall repair. Unlike sealing a hairline crack, this is load-bearing structural work: an incorrectly installed anchor or strap can fail under the same soil pressure that bent the wall in the first place, and improper reinforcement puts the people in the house at risk. It also creates a disclosure problem when you sell.

What you can do yourself is everything that reduces the pressure: clean the gutters, extend the downspouts well away from the house, and re-grade soil so it slopes away from the foundation. These are genuinely useful, and they are free or cheap.

Start with the engineer, not the contractor. A $250–$500 structural engineer’s report (Angi, Jul 2026) tells you which repair you actually need before anyone quotes you for it — and the engineer, unlike the contractor, is not selling the repair.

Insurance: standard homeowner policies generally exclude foundation damage from settling, soil movement, or deferred maintenance — the exact causes of bowing — although sudden accidental events like a burst pipe may be covered (HomeGuide, Feb 2026). Read your policy before you assume either way.