The pre-approval letter doesn't mean much other than on preliminary investigation by your lender, you possibly qualify for the loan.

Particularly for townhomes or condos, you should also investigate the HOA’s financial status.

Now they could have suckered me and took my money and a month or two months later, I could have investigated many deals with them and found out later.  

I urge you to investigate online videos and check out the instructions for installing these windows on homedepot.comIf you've gone through two quote processes, I know this is all hard to believe.

@Randall Re II perfectly reasonable to delay close to investigate further and you don't even have to go nuclear (yet).

I am investigating some others as well. 

By all means jump in, investigate, run numbers, and buy, but there is a lot more than meets the eye.

Investigate.

Email complaintsFill out a Business and Professions Complaint form.Email your form and all supporting documents to [email protected] complaintsFill out a Business and Professions Complaint form.Mail your form and all supporting documents to:Centralized Investigations and Audits UnitDepartment of LicensingPO Box 1098Olympia, WA 98507-1098

When he reported it to Soc Services (yep they got mail from Soc services) they replied they didn't have the time to investigate.