What homeowners actually paid for a septic tank
Hired homeowners reported a median of $5,200 for a septic tank in the 2023 American Housing Survey (111 jobs), or about $5,720 in today's dollars. The middle half paid between $2,900 and $10,000; the 75th percentile is 3.4× the 25th. Across all 128 reported jobs, hired or not, the median was $5,000.
Hired owners, United States
| Who did the work | n | 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|---|---|
| Hired a pro | 111 | $1,070 | $3,190 | $5,720 | $10,990 | $23,090 |
| Did it themselves | Fewer than 30 reported jobs here, so no figure is shown. | |||||
| Everyone | 128 | $880 | $2,750 | $5,500 | $10,990 | $27,150 |
Today's dollars: survey amounts × CPI-U 334.980 (Aug 2026) ÷ 304.702 (2023 average), rounded to $10.
Where you live
No division or metro has 30 or more hired records for this job, so only the national figure is shown.
Areas with fewer than 30 hired records are not shown. 0 area pages pass our thin-page checks and are linked.
Questions about this cost
How much does a septic tank cost?
Hired homeowners in the 2023 American Housing Survey reported a median of $5,200 (about $5,720 in Aug 2026 dollars); half paid between $2,900 and $10,000. Your price depends on the scope, so compare written bids line by line.
Why might my quote be higher than these numbers?
The survey covers jobs done in roughly 2021–2023 in nominal dollars (the today’s-dollar figures add inflation), it is self-reported, and it mixes small and large jobs. For this job the 75th percentile is 3.4× the 25th, so scope explains much of the spread.
Is this a quote or an estimate?
Neither. It is what owners told the Census Bureau they paid. Use it to ask better questions, not as a price for your house.