Building permits are required for most construction and renovation projects to ensure compliance with safety codes and zoning laws. Permits ensure structural integrity, legal compliance, insurance coverage, and protect property value. Projects needing permits include new homes, additions, decks, pools, interior renovations, plumbing, heating, and demolitions. Applications require detailed drawings and may need additional approvals. Inspections must be scheduled during construction. Home improvements may affect property taxes. Water and tree protection regulations also apply.