I'm renting, I can't do anything about exhaust or intake, no holes can be drilled and it's in my closet. I have a fan at the door but that's about it.
then you cant build a grow room..period..
honestly your best option is to then buy a grow tent with holes preset for you.
i liked my last one. it was a 6.5 x 6.5 40 sq foot space..
they actually do pretty great. i like the alum /silver lined ones..the white plastic lined ones offgass..
something about that plastic heating up..
set it close to window..exhaust / carbon filter for odor, then right out that window.
your intake will be the cool air from your places a/c unit that you live with every day.
temps have to be 76 to around 85 degrees..lower the better..
with the lighting heating up, you have to exhaust and intake any grow..its a no work around, must have.