The parties would get their signatures notarized and send originals back and forth until all parties had signed.  

if not are the subs holding up inspections What about the permits , what stage are they in and whose name are they in ?

When we buy or sell a property held in our names then quite a few documents need to be notarized by us.

. :)Or, alternatively, require the updated leases to be both signed and notarized.

I'm finalizing bids on two (2) duplex houses, 2bed/1bath, 1000ft2, to be built at the same time and costs are as follows;HVAC - $10,400Electrical - $8,400Plumbing - $9,000I'm surprised that the HVAC guy can even eat at your price (assuming is heating and air you installed), as its gotta be close to equipment costs.On another not, are you sure about your costs of $81k, on mine, I am estimating materials only to be $70-75k range (not including labor or subs).  

Sqft, amount of rooms/baths, and whether the house has a garage or not are only the beginning to finding comps on a home.

I think if they've got a plan together and you're ok with it, a simple one page document signed and/or notarized saying he's leaving and she's staying and taking responsibility would do just fine.  

I will have it typed up so we can both get it signed and notarized so it'd officially I will clean up and mow the lawn.

I will have it typed up so we can both get it signed and notarized so it'd officially I will clean up and mow the lawn.

I would try another bank as some only require a letter notarized and signed from your parents stating they do not intend to receive any of this money back.