Diy Septic System Cost. Larger houses will require a bigger septic tank. The doggie septic system works like an ordinary septic system, just on a smaller scale.
The average cost to install a septic system is between $3,100 and $9,600, including both the system and installation. When everything is laid out properly, your unit will run efficiently and last for decades. It provides the same results of simply flushing your waste down the drain.
Larger houses will require a bigger septic tank.
The system also has a dispersal field about one third that of a large home. The cost to build a septic tank system varies widely from as little as $1,500 to upward of $4,000. It provides the same results of simply flushing your waste down the drain. I built the first diy septic system over 30 years ago and it is still working today.