Septic tank under deck access hatch

Septic Tank under Deck Hatch Cover
All to often we see a septic tank in the back yard.  And the homeowner would like to add a deck.  A large deck that extends over the septic tank.

That does create a huge problem for the septic contractor.  We need access.  Not just a few boards removed.  If we can only remove a few boards, we are limited in our cleaning ability.  We need room to remove all the waste from the tank. Liquid and solids.

Septic Tank under Deck Hatch Cover

Septic Tank under Deck Hatch Cover
Here we can see a deck access hatch cover installed by a general contractor.  It is not a good idea to use a septic contractor to do these types of projects as we are “Specialty Contractors” and are not licensed nor insured for this type of work.  This is why we always refer a general contractor for this type of work in our area.

He has years of experience doing this and other types of work around the house.  He comes with First Call Septic’s highest of recommendations.  He is honest, fair, and does each job with the highest of precision.  Work with him and you’ll see, that there is a difference in General Contractors.

Thanks for reading,

Ronnie Tamez


  1. Septic tanks in the long run are more cost effective, running about 3,000 dollars. There are no water bills, and costs about 100 dollars to pump it. I believe it should always be checked. 🙂

  2. What size opening (say 2 feet by 4 feet) is minimum for allowing access under a deck for routine cleaning? And, should the hatch be directly over the septic tank, if possible? Can anyone give me a rough idea?

    1. Hi Richard,

      2X4 foot should be sufficient. But your septic tank could have many access lids. Be sure to contact a local Septic Inspector to make sure you are not covering up a critical access plug. $110 is cheap compared to having to cut up an expensive deck, and we have to do it all the time.

      Thanks for writing,


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