Oddish: you are stuck in the nightmare of 2014 with FNMA condo changes.
All condos, whether previously approved or not, are subject to reconsideration with FNMA.
With new construction, the project may have been previously approved, but you may be one of the first in 2014 to be closing (I see that 3 phases had previously been approved).
The approval process should not take longer than 4 weeks (we have had them approved in 2 weeks time), however, large adjustments/changes are now required by FNMA.
The most significant change is the HOA policy for the condos.
Once accepted, the umbrella policy, covering more than one condo development to cut costs, is no longer acceptable to FNMA, the HOA has to go through finding a new policy. If your association is still in control by the developer, this may be a shorter time frame. If the association is in the hand of the home owners, you have to have to schedule a meeting and a vote, etc, etc and you see how this could stretch you out with weeks and weeks of waiting.
Your lender should be know the answers to the questions of an estimated time of final project approval (they are the one who needed to initiate the approval process).
Your statement whether you should seek an attorney? I would recommend 'no'. They are not going to be able to push this any faster nor will they be able to change it (FNMA is right up there with the IRS and other higher entities!)...I would suggest that you discuss with your loan originator and see if you can hire an outside company (could be $1000) to get this fast tracked. Because you will be doing this for the entire project, we have seen HOAs reimburse the home owner as it is an expense that is for the good of the whole community.
Hope this works out for you soon and give me a call if you wish to discuss further.