HI Brendan, 

Did you mean to attach a photo? You can send one back in a reply. Grass ID is really difficult but if you try to send one of the whole lawn and one up close we may be able to help. 

If it is mostly green in the summer months it could be a warm season grass like Zoysia or Bermuda grass. 

If it is mostly green in the fall through spring it is probably a mix of tall fescue. 

If you are wanting to fill in bare spots or outcompete weeds, then it will be best to know if it is warm season or cool season grass since it depends on the time of year to either overseed or add more plugs. 

Emily