Below-grade cost-per-sq-ft PLANNING bands
Important: this is a rough planning aid, not a live price index and not current market pricing. Actual $/sq ft depends on your market, access, water source and scope, and moves over time — always enter the figures from your own quotes. Use these bands only to pick a starting point, then run the cost-per-square-foot normalizer on your real numbers.
| Scope | What it covers |
|---|---|
| Light / surface fix | grading, downspout extensions, sealant |
| Interior system | interior drain tile + sump, encapsulation |
| Structural / exterior | piering, exterior excavation & membrane, footings |
This is a planning aid, not a price index. We deliberately do not publish $/sq ft numbers here — they vary by market, water source and scope and change over time. Get the $/sq ft from your own quotes and normalize it with the cost-per-square-foot tool.