What i heard is- for GCC nationals to start establishment company (100% they only own-one person) there is no need for a Qatari sponsor. but for WLL (partnership companies) you need a Qatari partnership of min 51%. rent and details it varies from 350/SqMtr to monthly 2,500 depends on the area, location, building etc. for that he has to come here personally and select the location.