Building a deck is just one of the many enjoyable and lucrative home development projects you deserve to undertake. No issue how complicated or simple, a finished deck is a great place to invest time with friends and family and enjoy her home. Over there is one thing, however, that can throw a wrench in her deck structure plans, can you develop a deck end a septic tank?

You can build a deck over a septic tank, but that doesn’t always mean friend should. Structure your deck with a septic tank underneath requires more planning, building code knowledge, and has the potential for disaster. If you desire to develop a deck end a septic tank, you have to do it right!

In this article, you’ll find out the basics of structure decks over septic tanks, the risks, and building codes linked with this projects, so you understand whether or not this is a great idea for her home!
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Can You build a Deck end a Septic Tank?


Depending on whereby you live, the footings that the deck need to be at least 5-10 feet native the tank in ~ every point. This could lead come the deck shrinking or farming in size to accommodate this rules. You can use this attach to find state-level code about septic systems. Because that a better perspective, consult your local building codes or speak come a knowledgeable pipes contractor or house inspector!

Even if her locality enables footings closer 보다 5 feet, it is still wise to keep the deck footings in ~ least 5 feet native the tank. Act so will ensure the you never ever compromise the integrity or performance of her septic system.

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Can You construct a Floating Deck end a Septic Tank?

Floating decks, i m sorry are essentially freestanding wood platforms developed at great or simply above-grade, have to not be developed over a septic tank. The load of the deck top top the supports have the right to displace and disturb the septic system’s capability to effectively treat and also drain waste. Ignoring this can an outcome in her being the proud owner the the stinkiest floating deck in the city.

A straightforward solution to this is to develop a hybrid floating deck: using hidden footings prefer a regular deck, yet keeping lock short and separate indigenous the dwelling favor a floating deck. This will give the illustration of a floating deck without forcing the soil over the septic tank come support added weight.

Can You build a Deck end a Septic Field?

You have to never construct a deck over a septic field. Septic areas are draft to allow effluent to drainpipe out right into the underground water or evaporate right into the air. Disturbing the septic ar results in backup, making the soil muddy v contaminated fluid. The stench and appearance will be really noticeable and also may require considerable repairs on the entire septic system.

Even if you are looking to construct over one unused septic field, girlfriend should inspect the soil extensively to make sure it is no much longer draining. As soon as you’ve evidenced that the drain field is no active, girlfriend are cost-free to construct over it as if the were common ground.

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What deserve to You put Over a Septic Tank?

The just things that can go straight over a septic tank room decks or pergolas that have actually footings more than five feet far from the tank. Other structures, favor concrete slabs, foundations, and also even shrubbery have the right to seriously influence the health and effectiveness of the septic system.


Building a deck end a septic tank can be tricky. It is possible but not always wise. Even when friend do build the deck, there are countless things to save in mind. Prior to you develop a deck end a septic tank, carry out your research, setup extensively, and constantly prioritize the septic system! have actually you built over a septic tank in the past? execute you have actually any much more questions around your upcoming deck project? Leave your thoughts in the comments section below!