On this first job I had my wife hold the tape at the base of the wall and then I measured diagonally along the wall at an angle that approximated the slope of the roof.

@Brian Stephens Here, diagonally across the continent, most buildings have basements and/or crawlspaces (often both) and the older ones are rubble walls.

Financing: Draw a diagonal line through this section 5.

Financially, I know that many of these activities are more profitably outsourced.While I may have learned more than @J Scott regarding construction activities by doing some of the initial ones myself, he probably did several more flips than I did while I was figuring out how to lay tiles on the diagonal.

Also, there are signs of foundation movement such as diagonal cracks in the Sheetrock above the doors.

I would probably use 4x4 white glazed wall tiles and cut the corners on a diagonal in the eye level row of tiles to accept an accent piece that matches the floor tile.

In our area - almost diagonally opposite to you on the continent - Kijiji has great traction and has been the main on-line source for rental advertisements and Craigslist "sucks".I will concur that the eBayization of Kijiji has not been entirely positive.

Because of this condition, my first question, is your assumptive ability to get this owner to leave ~$70,000 of his asking price on the table, considering he has obviously already taken into consideration the parity between the selling price of the house across the street by decrementing that price with your exact amount for repairs and rehab of $40,000. 

The unit's ceiling crack has grown throughout the entire living room diagonally.

The house is an SFR with an illegal in-law in an interesting but visibly improving area (City added bus rapid transit and diagonal parking).