Need help: No contractors want to give me 'real' estimates

[Ken Junk]

I've had 6 contractors recently come to my house to get an estimate for a 1 bed with bath expansion. NONE of them wanted to give me a 'real' estimate without dropping $6.5k for blueprints. If this was a rehab, how is everyone getting estimates without getting blueprints? Or is getting blueprints part of the process that can't be skipped over? 

Sorry for the noob question. Kinda frustrated at this point.