The seller should be able to supply you with rental agreement copies also.

The plumber suggests re-routing the pipes from the main water supply of the home to the bathroom, instead of digging a hole in the concrete and fixing the part of the leaking pipe.He gave me a quote of about $2500 to re-route most of the piping in the home, and said he will be using PEX piping.

There was *literally* nothing left except the smoking hole that used to be the basement.  

It my sound strange to beginners, but when you are planning a budget and SOW it is easy to forget things so having a reference like that is a huge help.We are in the beginning stages of renovating a 4 family building and here is the general SOW we are following:Phase 1Water & Furnace services & misc plumbing issuesInstall electric heat in 1st floor front & 2nd back floor rearInstall spring loaded door hinges, replace locksets in all unitsinstall & new door in front floor rear unit Phase 21st Floor Back UnitFlooring & paintLight fixtures, new countertop, hardware for cabinets install fan in bathroom, new baseboard in kitchen1st Floor FrontUnitFlooring & paintLight fixtures, hardware for cabinets,install fan in bathroom,miscPaint common areas Phase 32nd Floor Back UnitFlooring & paintLight fixtures, new countertop, hardware for cabinets, install fan in bathroom, new baseboard in kitchen2nd Floor Front UnitFlooring & paintLight fixtures, hardware for cabinets, Install fan in bathroom, misc.Phase 4Re build Back staircaseInstall Smoke detector systemExterior paint

Your costs are impossible to estimate without first knowing how close supply and waste lines are to the closets. 

Don't drink too much, and don't smoke.  

This shortage in supply is causing the prices in the single family housing market to increase.

For example, found out when I was there in March for 6 month inspection that when they plugged in Christmas lights to an exterior outlet the previous November that they blew up, there was smoke, they were worried the house was going to burn down, and told me that outlet doesn’t work.

Debra, if that's the case, you're looking into a $5/sf range, maybe a little more bc of the supply/demand.

Generally, commercial is more valuable because there is less of it, supply of available land is low creating a higher price.