All building permits, regardless of the job type, require section 1, 2, 3, 7, 8, 9, (parts in red) filled in. Except for the utilities, in answering the.Plan review is often required before a building permit may be issued. To encourage building practices which minimize impact on our natural resources, Mecklenburg County is now offering rebates of up to. View 3 bedroom ADU floor plans and pricing. Browse accessory dwelling unit plans for 3BR from under 900 sqft to 1200 sqft. Search 1374 3-bedroom homes for rent in Mecklenburg County, NC. See detailed rental info and photos. 3 Maximum Building Area = total number of stories in the building x D (maximum3 stories) (506.2).