For instance, a $200 per month profit margin on a $200,000 house that cost you $40,000 to buy, is giving you a 6% return on your money each year, before factoring in other losses, such as closing costs, vacancy, and any excessive repairs.  

If the area is not dry when the bleach evaporates, or moisture is still in the contaminated area (humidity, outside air dampness), you could re- start the contamination process immediately and to a greater degree.(9) Chlorine is a key component of DIOXIN.

Should I be worried if a contractor asks for an excess of 50% up-front, on the day of a contract's execution?

If it's in excess of SC liability limit, hire an attorney.

Forced air is the way to go to prevent stagnant air build up and to prevent mold/moisture problems.

We just negotiated $50k off of a new build because builders here have an excess of inventory and they are willing to negotiate. 

If they cost you money because of excess utility use caused by an illegal sublease/sublet, then I would charge them for those losses. 

You might recognize me from this Bigger Pockets interview:A little background:I got my start working under billionaire Grant Cardone and his real estate team where I personally raised in excess of $100M of investors capital and was extensively involved in billions of dollars in Multifamily transactions.Since leaving Grant's office in 2022, my first deal was a 55 unit, $8.2M apartment complex in Daytona Beach, FL where I partnered with Ken Gee.

Indy for SURE has a ton of property that is excess might even get a beater house.

Due to this failed communication over the first 2 years of use the floor failed by the front and back door due to moisture getting under the floor where the tenants tracked in snow.