@Pati Tanielu - the first property I bought at 20 years old was an end unit townhouse. I specifically bought it to lower my living costs via roommates. I liked a townhouse as at 20 years old, I had no desire to do yard work.
In addition, the floor plan I picked out was an end unit with a first floor master. I lived in the bedroom downstairs. Then I had a roommate that paid me $500 and lived in the 2 bedrooms and full bath upstairs. He made the second bedroom a living room. It worked out great and he paid almost my whole mortgage then we split the utilities.
If I wanted to be more aggressive, I could have picked two roommates and had it so they covered the whole mortgage, but I wanted a little more privacy so we did the upstairs/downstairs plan I mentioned above.
@Pati Tanielu , the problem could be: you still need to qualify for the loan - on your own. After that, any roommate amelioration of your expenses would be a bonus! Good luck...