Can I Build One Website And Use Same Content With 100’s Of Domain

Hello,

I am brand new to the site and tried to search for some answers, but really could not find anything. I hope someone can help me out.

I am looking to build one website design using the same content a few 100 times. It is a business referral website to market to certain States/Counties/Towns. I will only use very niche keyword phrases. I was thinking of getting only City/Town niche domain names.

If I use the same design/content over and over again - how much would it hurt? Or being that I am going for a very niche keyword phrase and get that domain name - would it hurt at all?

I cannot thank you enough for taking the time to read this and helping me out.

Or would it be best to get one domain name and make extensions from there. Something like:

abccompany.com/1townpainting

then:

abccompany.com/2townpainting

and so on…

Thanks again.

Stephen