Administrative overview · FIPS 17099
LaSalle County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
LaSalle County Land Use Department, Building Permit Program
For a project in or near LaSalle County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
815-434-8666; SafeBuilt inspections: 847-510-4104
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
LaSalle County Land Use Department, 119 West Madison Street, Room 107, Ottawa, IL 61350
Operating hours
Monday-Friday, 8:00 AM-4:30 PM; closed weekends and holidays
Review expectation
Applications are reviewed promptly and applicants must be notified in writing within 30 days of submittal. Construction must begin within 9 months of permit issuance and be completed within 2 years unless otherwise stated.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for LaSalle County
Who handles permitting for this jurisdiction?
LaSalle County Land Use Department, Building Permit Program is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
No verified online portal was located in the reviewed public materials. Contact 815-434-8666; SafeBuilt inspections: 847-510-4104 and request the current application route before preparing a final submittal.
How long might review take?
Applications are reviewed promptly and applicants must be notified in writing within 30 days of submittal. Construction must begin within 9 months of permit issuance and be completed within 2 years unless otherwise stated.
How are inspections scheduled?
LaSalle County contracts with SafeBuilt. Schedule building inspections at 847-510-4104 or ilinspections@safebuilt.com; the county states inspections are currently conducted by remote video, with in-person plumbing inspections available. Inspection results are emailed to the contact identified on the permit application.
Which codes and exemptions should I review?
Effective January 1, 2025: 2024 International Residential Code for non-agricultural one- and two-family dwellings and applicable accessory structures; 2024 International Building Code, 2024 International Fire Code, 2024 International Mechanical Code, and 2024 International Fuel Gas Code for non-agricultural commercial, industrial, storage, institutional-public, and multifamily structures; and 2023 National Electrical Code. Illinois Plumbing Code and county amendments also apply. Bona fide agricultural buildings, accessory structures, and structures on qualifying farms are excluded from the Article 5 building-code provisions and related building-code fees, but still require a $25 agricultural-exempt permit application and must comply with zoning, floodplain, septic, subdivision, and other applicable requirements. Agricultural fences are exempt from zoning fees; ordinary non-agricultural construction generally requires a permit.