Building Setbacks & Zoning in Tinley Park, IL

If you live in Tinley Park or are thinking about moving there, building setbacks & zoning are one of those things you probably won't think about until they affect you directly. Tinley Park has 2 specific rules on the books covering different aspects of building setbacks & zoning, and some of them might surprise you.

Structure Height Limits

Tinley Park's Building Code caps detached, one-story frame garages at 720 square feet and 18 feet of height at the roof peak, measured from the finished floor to the top of a pitched roof. Attached garages instead follow the same construction rules as the house itself. Height limits for the principal dwelling sit in the separate Zoning Ordinance, not this section.

Key details: Max garage footprint: 720 sq ft (one-story frame). Max garage height: 18 ft at roof peak, pitched roof. Interior fire separation: 1/2-inch gypsum if under 10 ft from house. Applies to: detached, one-story frame garages only. Principal structure height: set by separate Zoning Ordinance.

Building a detached garage taller than 18 feet at the roof peak, or larger than 720 square feet, without a variance is unlawful construction under § 155.07(A)(1)J. Violators face the Building Code's general misdemeanor penalty of up to $750 for each day the noncompliant structure remains, and the Building Official can refuse a Certificate of Occupancy or order the excess brought into compliance.

Setback Rules

Tinley Park's Building Code requires every deck, porch, gazebo, trellis, pergola and accessory structure to sit at least 5 feet from all property lines and clear of any utility easement, on top of needing its own building permit. Front porches face an extra limit: they cannot extend more than 35% of the minimum required yard setback, and in residential districts a porch can reach no more than 15 feet from the house's exterior wall.

Key details: Minimum setback: 5 feet from all property lines. Utility easements: structures must stay clear of them. Front porch projection: max 35% of minimum yard setback. Porch max extension: 15 feet from exterior wall (residential). Permit: required for decks, porches, gazebos, pergolas.

Building a deck, porch, gazebo or accessory structure closer than 5 feet to a property line, or without the required permit, violates § 155.07(B)(14) and the Code's general compliance mandate in § 155.07(A)(1)J. The Building Official can deny a Certificate of Occupancy or order the encroaching structure removed or relocated, and continuing to maintain a noncompliant structure carries the standard misdemeanor fine of up to $750 for each day it remains.

The Bottom Line

Tinley Park's building setbacks & zoning rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Tinley Park is broadly strict or permissive.

These rules come from Tinley Park's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.