HomeGuide's 2026 national figures put foundation excavation for a new home at $1,500 to $10,000 on average. New Orleans foundations are slabs or raised floors on piers, often on piles, because the soil is soft and the water is close.
Prices here are HomeGuide's published national ranges, not quotes from our company. In New Orleans, groundwater, soft soil, narrow streets, buried debris and the trip to the dump site move the real cost. Checked October 2026.
What does foundation excavation cost for a new house?
HomeGuide lists new home foundation excavation at $1,500 to $10,000 nationally, and $20,000 or more for large foundations in difficult soil. That covers the dig. A full slab for 2,000 square feet runs $12,000 to $28,000 on HomeGuide's foundation page, and pier and beam $16,000 to $30,000. Pile driving, where the engineer calls for it, is separate.
Can you dig a basement in New Orleans, and what would it cost?
Nationally, HomeGuide prices basement excavation for new construction at $10,000 to $30,000, or $30,000 to $50,000 or more on hard sites; its project table shows a lower $1,500 to $10,000, but the basement section is the right figure. In New Orleans, groundwater a few feet down makes basements impractical, and homes are raised or built on slabs instead.
Can a crawl space be dug deeper?
Under raised New Orleans homes, digging out more room in the crawl space for plumbing access or leveling work is fairly common, done carefully around the piers. A full basement is a different story: HomeGuide puts it at $20,000 to $45,000 or more for excavation alone, and the water table rules it out here.
What does it cost to dig around an existing foundation?
To dig around an existing foundation for repair costs $5,000 to $15,000, or $100 to $250 per linear foot, on HomeGuide's figures. Near the slab or piers, the work is done by hand or with a small bucket, and water in the trench is pumped out as we go.
How far from the foundation do you dig for repairs?
We dig only as wide as the leveling or repair crew needs, often a couple of feet past the slab edge or around each pier. Depth is up to the repair company or the engineer. In soft, wet soil, we keep each open section short and shore anything deep.
Can you dig beside a foundation without damaging it?
Yes, by digging in short sections, keeping the bucket away from the footing, finishing by hand close to the concrete or piers, and backfilling the same day where possible. Soft New Orleans soil can flow into an open trench, so long open runs next to a house are not safe.
How deep do footings go in New Orleans?
The engineer's design and the building code set the depth of footings and grade beams. Frost is not a concern here. Soft soil is: many slabs and raised homes rest on piles driven to firmer layers, and the footing depth and pile length come from the soil report and the engineer.
What does backfill around a new foundation cost?
Backfill is usually included in the dig price. If more material is needed, HomeGuide lists fill dirt at $5 to $25 per cubic yard and sand at $15 to $50. Compacting the backfill in thin layers keeps it from settling away from the slab and leaving a gap where water collects.
My foundation cracked after the work next door. Who is responsible?
Cracks after nearby digging or pile driving can have several causes, and an engineer has to judge which. Take dated photos, measure the cracks, and notify your neighbor and their contractor in writing right away. A Louisiana attorney can explain your options. This is general information about Louisiana rules, not legal advice.
What does digging for a walkout door cost?
HomeGuide has no price for a walkout door, and with no basements in New Orleans, the question rarely comes up. Digging to replace steps or reach a raised house's lower level is priced like other work around a foundation, $100 to $250 per linear foot by HomeGuide's figures.
Want a number for your own lot? We come by, look at the ground and the drainage, and send a written quote. Call or text (504) 608-4795.