How Much Does Septic System Installation Cost in Charleston, SC?
Average septic system installation costs in Charleston range from $13,090 to $17,710. Get a free, customized estimate below.
Septic System Installation Cost Breakdown — Charleston, SC
| Item | Unit | Qty | Unit Price | Total |
|---|---|---|---|---|
| Septic Tank (1500 gal) | each | 1 | $3200.00 | $3200.00 |
| Drain Field & Gravel | linear ft | 200 | $35.00 | $7000.00 |
| Excavation & Backfill | lump sum | 1 | $1800.00 | $1800.00 |
| Labor & Permits | hr | 40 | $85.00 | $3400.00 |
| Estimated Total | $15,400.00 | |||
* Prices are estimates based on Charleston market rates. Actual costs may vary based on project specifics.
Estimate
Ref ID: EST-2026-LVJR
Date Issued
May 9, 2026
Client
Project Details
Site Address
Start Date
End Date
Scope of Work
Materials
| Material Specification | Units | Amount | Ext. Total | |
|---|---|---|---|---|
$ | $3,200 | |||
$ | $7,000 | |||
$ | $1,800 | |||
$ | $3,400 |
Labor
| Service Specification | Type | Hrs | Rate | Ext. Total | |
|---|---|---|---|---|---|
Craftsmanship Guarantee | $ | $600 |
Contractual Agreements & Conditions
Total
$16,000
Draft
Frequently Asked Questions — Septic System Installation in Charleston
How much does septic system installation cost in Charleston, SC?
The average cost for septic system installation in Charleston, SC ranges from $13,090 to $17,710, depending on project scope, materials, and labor rates. Charleston costs are close to the national average.
How do I get a free septic system installation estimate in Charleston?
Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly. No signup or credit card required.
What factors affect septic system installation costs in Charleston?
Key factors include project size and complexity, material quality, labor rates in Charleston (SC), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.