I chose to book an apartment with Concorde because I liked features in one of their projects. I booked, signed agreement papers and I paid the booking amount plus full down payments from my pockets. I wish I had taken bad reviewed about Concorde Group more seriously.
After I got hooked to them and by the time bank(suggested by Concorde itself) verified property papers, Concorde said that the market price for the property has increased by about 5 lacs.
I did not agree to pay even a penny more that what is agreed in agreement papers. Cancelled, got my money back. I made some losses while getting the money back also - Concorde did not pay interest, lost about 50k money as loan was already approved and I had to pay pre-closure charges. There was so much of stress the, but I am a happy man as I now have apartment with one of the top builders in Bangalore(I did not take name as I do not want this review to be seen as marking message for some other builder).
Bottom line: Stay away from Concorde Group. Extend your budget a little and go for Tier-1 builders.