Is it unethical way to submit same detail info from different sites and to be submitted to number of local directory sites.? Example domain1.com, domain2.com domain3com to be submitted to local directory site with the same detail of info like, street number, state, zip code, phone number.
I think that there is no problem if submit the same info to different directories. Depends on your purpose - for attracting traffic or backlining only or both.
For street number, state, zip code, phone number its okay but for descriptions you should make it unique for each directory.
Really, Local business directories can be very useful for improving search engine rankings particularly local SEO. Directory submission is a useful tactic to employ during your local search engine optimisation or other geo-targeting campaign.