if he wants  to buy commercial proprty( greater than 4 units) what do you suggest he do to obtain the rest of the down payment?

If the addition support structure is resting on concrete that is only a few inches thick, such as a simple 4" thick patio, sagging and cracking will occur.

Took out some old plumbing once, got it on my hands, wiped it off, took the rest of the day off, felt like death warmed up.The key to getting bugs out of the property is ensuring that there are no holes in the house, eg plumbing fixtures, under the toilet, doors have proper sweeps that fills the gaps, electrical covers that cover the drywall, behind dishwasher, and so forth.

The rest will fall into place as you move forward. 

IF , big IF, the rest of the bricks or mortar is questionable,,,take it all down all the way and make it a one time mess. 

I didn't get enough before pics so the leveled foundation and everything will be already completed but the rest still looks pretty much the same.

He can also opt to take the earnings until he hits his principal in the IRA and wait to receive the rest at retirement.

If anyone doubts my reasoning, check out the forum topic"Now I understand why flippers are having to work "I rest my case !

Or, is there a better way to replace them to match the rest?

It cost a whopping 5500(I financed the rest at the local bank) and I did all of the rehab myself, or with the help of a pizza, a case of beer, and some friends.