He also said that's where it gets very expensive and cost upwards of $6,000 b/c of the digging/going underneath the house to replace the pipes.

In the end, we had to dig up part of the basement and open up walls to expose work that was done decades ago.

I need to dig into it more, thanks again guys.

After some digging I've discovered I can take out a second line of equity on my newest rental but since it hasn't been 12 months I can only pull out 75% of the purchase price.

If I moved forward on the deal I would figure the cost of digging the tank out as part of my financial evaluation.

I know this is an old thread but I've been digging around on BP to figure out what the best place to go for a list is.  

Not saying I will be a slum lord but many things that bother the normal tenant do not affect a student.My short term goals(next 6 months) would be:-to start attending REI meetings, DIG is the main one I know of in the area, any philly people able to point me towards some other good ones?

I'd dig a little deeper.

. :-)Feel free to reach out as you dig into your own research.

Depending on how far the existing chimney footing sits in the ground and where the flu exits the building, you may need to dig a well and put in some drainage (crushed stone) ... but likely not.