Minimum width is the width of your trailer... likely 8'.
9.5' is pretty tight, but doable if you are capable of backing up a trailer. Is your trailer as tall as the eave of the house? If not, you'll have even more room. My suggestion is to actually measure, not assume, your dimensions. Find out if you need to worry about the eave due to trailer height, or if you are under your eave. Find out exactly how wide it is and them determine if you are comfortable with your backing ability. I've been towing a travel trailer for a decade, so I'm fairly comfortable backing into a tight space (provided I have good vision by mirror or a trusted companion to help while I back up).
Your results may vary.
