Dont invite friends over? im not ashamed but help?

i moved to south carolina last year. I had a 3 story house but moved into a mobile home out in the counrty. Its nice and everyone likes it. new furniture , big kitchen , etc. i Ask my mom over and over to add another floor. but im not used to a small house and room. i go with friends but dont invite them over because im afraid of what they think and just not used to a mobile home.. im just used to big houses from the city. help?