Commingle$ & Completion date in Purchase Agreement for New Construction Single Fam

[Shawn W.]

Hi BP community! 

New investor myself and trying to help my parents makes sense of their Purchase Agreement on a New construction single family house in Florida.

Are these two terms below in the Purchase Agreement common? 

1.  'XXX Inc.' has the right to commingle purchaser's fund in their general operating account. 

2. The purchase agreements contains no completion date. XXX inc. agrees to use it's best effort to deliver the house on or about 180 days from the date of actual commencement (slab pour)...However XXX inc will not be responsible for any inconveniences caused to the purchaser for failure to complete the house by said number of days... (not word my word here but that's the gist of it, no mentioning of any penalty of delay) 

This Purchase agreement is signed long time ago, but the house is still under construction. My parents are buying remotely so they are worried. Thought I'd finally do my first BP post here to ask the question (after being listener of BP podcast for a long time!) 

Thank you all for any thoughts or advice! 

Shawn