The context was usury, default penalties, or other defects; obvious or not.

This means boarded up windows in not seen from the street and interior defects are not taken into consideration.  

Those things will create a situation with a higher chance of title defects.

Tenant agrees to pay for cleaning the drains of any and all stoppages, except incidents created by roots or structural defects.

Don't pinch pennies on a roof, water damage can cause major problems and that gets expensive, damage over time to framing is generally not covered by your insurance.As to warranties, read the manufacture's warranty and then let me know if you will ever be able to make a claim under those conditions, material defects, hard for me to prove that.

Meaning if you purchase a title policy, and find a title defect, they will work to correct it, and if they can't you'll be entitled to a refund of your EMD. 

Basically, your product was defective by the time you picked it up off the shelf and brought it to the counter, and you told the potential buyer that it was their responsibility to fix it even though it malfunctioned before they even purchased said product."

As long as the property is safe and there are no major systems defects, it will likely pass a conventional appraisal.

Now if the property has some sort of defect then the seller might be more open to taking payments.

And depending on if that was the code requirement at the time or not, and how old the condo is, this may be a possible construction defect claim on the property...so again you may want to look into it a bit more.