Essential official links—paired with our how-to guides so you know when and how to use them.
Use official portals for the PIN—not blog summaries. This directory is organized the way investors actually work a deal: check violations and taxes before you offer, confirm zoning and unit legality, then map permits and utilities to your rehab scope. Pair every link with the matching how-to guide so you know when to use the tool.
Save screenshots of each pull in the deal file with the date. Portal data changes; your underwriting should show what you relied on.
Use before you buy and before you open walls. Read the permit process handbook and working with officials guides first.
Pair with Illinois property taxes and the tax appeal guide.
Process guide: contractor vetting.
Bring the rehab checklist on walkthroughs. When the scope is solid, review financing options and request terms if needed.
Financing overview Request loan terms