So if your project is 4 months from start to sale, you'll start work at the beginning of the month, get the invoice for the first months supplies at the end of the month, and the invoice will usually need to be paid at the end of the next month (60 days from project start - so far).

After an offer, in due diligence phase, I would request all the details for example, vendor invoices, sales orders, etc.At what point is acceptable to ask the seller for tenant agreements, copies of utility invoices, etc?

@Kirk Zacharda Dang, that's a big difference from list price (619) to sell price (540) just because of an apartment complex behind you.

See below:In two years, never furnished a bank statement showing where security deposit funds were held - no interest paid.Provided a check with a piece of paper with markings for "$75 bathroom door knob" and "$150 kitchen faucet" (No receipts, invoices, etc. - just his handwriting).Check was given on the 28th day of the following month (2 days before due) and has not responded to calls/texts.I sent a demand letter with a reasonable request, asking for the full amount of the deposit because there were no defects when I moved out.

More investors need to get skin in the game besides just the mortgage and invoices.  

Don't give them their deposit and send them an invoice for the rest.

Everything looked good in the desktop version, but once imported into the online version, I was lost. and I am familiar with the online version because of I use ot for my design business.Anyways, every single transaction was defaulted to either an open transaction, or open invoice.

Lawyers love long documents, replete with words like "replete" and "FORCE MAJEURE", because they tend to scare the average person into relying on Lawyers for every RE transaction, thus seemingly justifying their huge invoices. 

When signing lease and exchanging the funds make sure to perform the walkthrough and provide a "condition of statement" for the unit.6. when they leave you have 14 or 30 days (check law) to return the sec dep escrow with a detail list of all expenses and copies of invoices.7.

Capital expenses and invoice.