High for standard residential fences, provided the property owner diligently researches and adheres to all local codes, obtains necessary permits, and accurately locates property lines and utilities.
Basic residential fence installation requires careful attention to local zoning ordinances, property line verification, underground utility location, and proper post foundation depth to accommodate DuPage County's 42-inch frost line.
Project Guidelines & Rules
General Requirements & Permitting
4 Rules
Permit Requirements
Check with your local building department for specific permit requirements prior to commencing any fence installation. (IRC R105.1)
Property Surveys & Setbacks
A current property survey is often required to establish property lines and ensure compliance with setback requirements. Fences typically cannot be installed on public easements. (IRC R104.1)
Utility Easements
Verify the existence of any utility or drainage easements; fences are generally prohibited within easement areas to allow for access and maintenance. (DuPage County Standard)
Underground Utility Locates (JULIE)
Contact JULIE (Joint Utility Locating Information for Excavators) at 811 at least 48 hours (excluding weekends and holidays) prior to any excavation to mark underground utilities. (NEC 300.5)
Structural & Construction Standards
4 Rules
Fence Height Limitations
Fences in residential districts typically have height limitations (e.g., 6 feet in rear/side yards, 4 feet in front yards). Verify specific zoning requirements with your local municipality. (IRC R104.1)
Post Foundations (Frost Depth)
Fence posts requiring structural support must extend to a minimum depth of 42 inches below grade to mitigate frost heave, or be supported by a footing extending to this depth, consistent with DuPage County's frost depth. (IRC R403.1.4.1)
Material Durability
All materials shall be suitable for exterior exposure and the intended use, resisting rot, corrosion, and insect infestation, considering DuPage County's climate. (IRC R301.1)
Gates
Gates must swing freely and be capable of being securely latched. Specific requirements apply for pool enclosure gates. (IRC R314.4)
Electrical & Plumbing Considerations
3 Rules
Underground Electrical Wiring
Ensure no fence posts or excavation activities conflict with existing or planned underground electrical wiring. Maintain required clearances from all underground utilities. (NEC 300.5, 300.50)
Above-Ground Electrical Clearances
Maintain required clearances from overhead electrical lines as per NEC regulations for both horizontal and vertical distances. (NEC 225.18, 230.24)
Plumbing & Drainage Conflicts
Avoid disturbing or obstructing existing plumbing lines, private sewage disposal systems, stormwater drainage systems, or underground irrigation during excavation or installation. (Illinois Plumbing Code 890.130, 890.1300)
Safety & Accessibility (Pool Fences)
2 Rules
Pool Barrier Requirements
Fences enclosing swimming pools must meet specific barrier requirements, including minimum height (typically 48 inches from grade on the exterior side), maximum allowable gaps, and self-closing/self-latching gates with release mechanisms at least 54 inches above grade. (IRC R314.2, R314.4)
Gate Operation for Pools
Gates for pool enclosures must open outward away from the pool and be equipped with self-closing and self-latching devices. (IRC R314.4)
