Do you have a permit for that? When it comes to all the paperwork associated with permits and inspections, that's your job—not the contractor's. Nearly all municipalities require building permits, inspections, and approvals for plumbing and electrical projects. Additionally, exterior work may require approval by an architectural review board or homeowners association. It is also imperative that you follow up after a job is completed so that you can get a valid certificate of occupancy issued for the work that was done.