I know they have loads of data and there is a business reason they are doing that.

This data was collected from the US Census, which conducts a monthly building permit survey for every US metro. 

You need to find several other contractors to bid this, and ensure they’re licensed, insured, and fully vetted with good references.

Do your DILIGENCE and use their "urgency" as a negotiating lever- If the seller requests to move-out after the closing date, be sure to hold half of their profits with the closing attorney to ensure they move out on the agreed upon date- Visit the home frequently.

There are a ton of data centers in loudoun county and prince William.

Ask a lot of questions during the estimating phase to ensure you've both thought of the potential hiccups.

You just need to weigh the interest penalty vs likelihood of refinancing early.  10yr also helps ensure you get through a market cycle before your balloon is due which I'm a big fan of.

It will also ensure you get paid back when he (hopefully) refinances.

@Jacques Edouard Dessejour LapierreThe appraiser is going to have access to MLS sales and other data.  

Partner 2, has met with agent, the contractor, and will be ensuring the project is on track.