Ask Your Question

Angie's List Answers is the trusted spot to ask home improvement and health questions and get answers from service companies, health providers and consumers. For ratings and reviews on companies in your area, search Angie's List.

Top 30 Days Experts
Rank Leader Points*
1 kstreett 240
2 Guest_9020487 110
3 Guest_9190926 105
4 GoldenKid 100
5 ahowell 95
6 KnowledgeBase 95
7 skbloom 80
8 Guest_98024861 70
9 Guest_9311297 70
10 Guest_9400529 70

*Updates every 4 hours

Browse Projects By Category

Question DetailsAsked on 4/8/2013

What is the average cost to install a 5 bedroom septic system?

Do you have the same question? Follow this Question

2 Answers


Unfortunately, I don't have that type of project cost information on hand, but I do know that costs for this type of service can vary based on a number of factors:

- How far is the septic tank installation site from the home's main drain? The greater the distance, the higher the cost.

- What kind of access issues may be present? Costs may increase with installations on or around steep slopes, wooded areas or in areas where property improvements are nearby.

- What kind of septic tank or system will be installed? With any purchase, products can/will vary in price & quality by manufacturer.

I know this is a vague answer to your specific question, but I would highly recommend obtaining at least three estimates from highly rated and well qualified contractors with experience in this type of work.

If you'd like to see some ratings and review information on septic tank installation providers in your area, you can sign in to and use the "Search the List" tab to search for septic tank installers. I can provide this info as well, if you'd like (just respond in line by submitting a new answer to this Q&A). You can also search for providers in your area by talking to a neighborhood specialists at 1-888-888-5478 or by email at

Answered 7 years ago by JP


Depends a great deal on your soil type and the lay of the land near your house, and the distance to yours and your neighbor's water wells, if any, and nearby waterways, and depth to bedrock. An ideal case, with no nearby wells or waterways and free-draining sand or gravel ground can be a little as $5000, but $10,000 is probably a more general figure. With difficult ground conditions, high groundwater, shallow bedrock, deep frost penetration area, etc can run as high as $25,000 for a "raised-pad" and insulated system.

I am assuming here you are talking an initial installation on a new house. If your problem is just flow problems in an old system, then a cheaper alternative might include a larger and multi-chamber septic tank (to trap more of the solids), or just building a new leach field or extending the leach field off the existing system and pressure-flushing the existing leach drain pipes, which you might get for $5000 or so in normal conditions.

I would advise bringing in a civil engineer who does septic design to assess your situation - in most areas any septic system design has to be done by a civil engineer anyway.

Answered 7 years ago by LCD

Related Questions

Terms Of Use
Privacy Policy