Before You Build in Oak Lawn, IL: Permit & Rule Checklist (2026)

Oak Lawn requires a building permit for any new fence, fence replacement, or fence relocation. Applications are filed with the Building Department and must include a plat of survey showing proposed fence location, height, and materials.

Oak Lawn requires fences to be installed with the finished (smooth) side facing the neighboring property. Oak Lawn does not mediate private boundary disputes, which are civil matters governed by Illinois property law.

Oak Lawn requires all swimming pools capable of holding more than 24 inches of water to be enclosed by a barrier at least 4 feet high with self-closing, self-latching gates. Above-ground pool walls can serve as barriers if tall enough and ladder access is secured.

Oak Lawn requires a building permit for retaining walls over 4 feet in height measured from the bottom of the footing to the top of the wall, or for any wall supporting a surcharge. Engineered drawings stamped by a licensed Illinois structural engineer are required.

Oak Lawn fence code prohibits front yard fences. Side and rear yard fences maximum 6 feet. Maximum 8 feet allowed in some circumstances. $30 permit required.

Oak Lawn pool safety rules address barriers, electrical safety, drain covers, and equipment standards. The Virginia Graeme Baker Pool and Spa Safety Act requires anti-entrapment drain covers. Pools must meet current building and electrical codes, and homeowners are responsible for continuous supervision of swimmers.

Oak Lawn requires a building permit for installation of any swimming pool, spa, or hot tub that holds more than 24 inches of water. Permits are issued by the Building Department and require a site plan, barrier/fencing details, and electrical plans. Inspections are required at multiple stages.

Hot tubs and spas in Oak Lawn require a building permit, proper electrical installation by a licensed electrician, and either a locking cover meeting ASTM F1346 or a barrier equivalent to pool fencing requirements. Setbacks from property lines apply.

Above-ground pools over 24 inches deep require a building permit in Oak Lawn and must meet barrier requirements. Pool walls at least 48 inches high and non-climbable may serve as the barrier if ladders are removable or access is secured. Setbacks and electrical safety requirements also apply.

Oak Lawn requires pools holding more than 24 inches of water to be enclosed by a barrier at least 4 feet high (often 5 feet) with self-closing, self-latching gates. Requirements align with the Illinois Swimming Pool and Bathing Beach Act and the International Residential Code adopted by the Village.

Garage conversions in Oak Lawn require building permits and zoning compliance. No IL statewide garage ADU mandate. Required parking must be maintained.

Illinois has no statewide ADU mandate. Oak Lawn zoning governs accessory dwelling units. No specific ADU program identified; zoning approval required. Contact Community Development.

Tiny homes face significant barriers in Oak Lawn. The Village's zoning code sets minimum dwelling sizes for single-family residences, and tiny homes on wheels are generally classified as recreational vehicles not permitted for permanent occupancy in residential zones. Park model RVs are not allowed as primary dwellings.

Carports in Oak Lawn require a building permit and must comply with accessory structure setbacks, height limits, and design standards. Attached carports are treated as additions to the principal structure. Fabric or tent-style carports are generally not permitted as permanent structures.

Accessory structures (sheds, garages) require building permits from Oak Lawn Building Division. Must comply with setback and size requirements under Village zoning code.

Open burning regulated under Oak Lawn Village Code and Illinois EPA (415 ILCS 5). Refuse burning prohibited. Contact the Oak Lawn Fire Department for recreational fire and open burning guidance.

Portable fire pits and recreational fires may be allowed in Oak Lawn subject to Village fire code standards. Contact the Fire Prevention Bureau for current fire pit regulations.

Oak Lawn operates its own water utility, distributing Lake Michigan water purchased from Chicago and reselling to several south suburbs. The village enforces odd/even address lawn sprinkling rules from May 15 to September 15, typically banning daytime watering.

Oak Lawn property owners are responsible for trimming private trees so branches do not obstruct streets, sidewalks, streetlights, or traffic signs. Parkway trees (between sidewalk and street) are maintained by the village and cannot be pruned by residents without approval.

Street trees in Oak Lawn are Village-owned and require authorization for removal. Private tree removal generally unrestricted on private property. Contact Public Works for guidance.