Two separate businesses, let say A and B running from rental home. House size is total 3000 sqft plus small garden. From it 200 sqft is shared business office, 450 sqft is shared garage for both businesses storage, 600 sqft is photo studio for business B. Also time by time business B will use garden for some photo sessions. Total property monthly rent is 7k
If almost half of house is dedicated to run both businesses, what are best possibilities for tax deduction. Surely it will not be allowed to right off almost 50%, or is it?