Another full duplex sold same block a few houses down 117k during the due diligence phase.

Time you don’t get back and if you look at it purely from a business perspective, it’s a drain.

If you don't want that, it may be better to remove it, if it's not a requirement in your market.In general, for a 1970 house:The drain plumbing might be cast iron. 

My houses on this block used to be the two best--and they were pretty bad at first.

One major problem with developing is the cost over-runs you run into with bring in sewer from the street, water mains, fire hydrants, underground electric, storm drains, streets, street lights and many years of getting plans approved.

Real estate 101 tells us to buy the ugliest house on the block.

Block frame or wood frame?

BP keeps blocking me from posting it for some reason.Go to Google and search "learn to be rich spreadsheet" and you'll find what I'm using.

Find out what type people are going in and out of the house, stay on the street and see if you see anything suspicious, drive a few blocks around the house you're interested in so you get a feel for the area.

OK, well reducing noise means blocking, canceling, or attenuating sound waves.