Zoning reports
What a zoning report is, and what's actually in one
A zoning report states what the ordinance permits on one specific parcel — its district, the bulk standards governing it, the overlays it sits inside, and what those combine into. The useful ones cite the ordinance section behind every figure, so you can check the answer instead of trusting it. A RealDevelop report costs $250 and is generated on demand.
Why the document exists
Working out what a site permits is not conceptually hard. It is slow, and the slowness is what costs you deals. For a Chicago parcel the answer is spread across the base district's bulk table, the use tables, overlay districts, transit-served-location rules, parking standards and whatever amendments landed since the last printing. Doing it properly takes a day.
Doing it for forty candidate sites takes a month you don't have — so in practice most sites get screened on a guess, and the good ones get missed. A zoning report is that day of work, as a document you can put in front of a partner, a lender or a seller.
What's in a RealDevelop report
Seven sections. Each degrades independently — if a data source is unavailable for a parcel, that section says so rather than the document failing or, worse, quietly omitting it.
| Section | What it tells you |
|---|---|
| The parcel | Address, PIN, lot area, frontage and depth, ward, and assessor class. Where the frontage from GIS fails a sanity check against the recorded area, the report says so rather than printing a number the bulk maths refused to use. |
| Base zoning, and what is next door | The parcel’s district, plus the districts on each side named by compass quadrant — because Chicago setbacks are contextual, and an R district next to a B lot changes what you can build on it. Where a side is split between districts, both are named. |
| Bulk standards, cited field by field | Floor area ratio, height, minimum lot area, lot area per unit, setbacks and parking — each with its Municipal Code section and a badge saying whether the figure was read from the ordinance or derived. |
| Connected Communities / TOD | Whether the parcel qualifies as a transit-served location, which tier, the station and distance driving it, and the parking, FAR, height and density factors that follow. Fails closed outside Chicago rather than guessing. |
| Overlays and special districts | FEMA flood zones, planned developments, opportunity zones, ARO areas, special character overlays, Chicago landmarks and National Register districts — each a hit or a miss, with the source named. |
| Public records | Assessed values from the Cook County Assessor, and recent building permits and violations from the City’s open data. Violations join on address rather than PIN, so the report flags its own match confidence. |
| The manual-diligence checklist | The seven things no API can answer, each with the office, address and phone to ask: the zoning verification letter, FOIAs for variances and special uses, FOIAs for open fire-code and zoning-code violations, Certificate of Occupancy copies, site plan approval conditions, and records requests. |
Exported as a PDF with the citations intact. How the underlying data is produced and checked →
What it costs, and what that buys
| RealDevelop report | A traditional zoning report | |
|---|---|---|
| Price | $250 | Typically several times that |
| Turnaround | On demand | Days to a couple of weeks |
| How it's produced | Structured extraction of the ordinance, applied to real parcel geometry | A person reads the code and corresponds with the municipality |
| Municipal correspondence | No — we hand you the checklist and the contacts | Yes, usually including the zoning verification letter |
| Best for | Deciding what to pursue, and screening at volume | A specific deal already under contract |
The honest version
These are not the same product at different prices. A traditional report includes a human talking to the City, and for a deal under contract that is worth paying for. Ours is built for the stage before that — when you have forty lots and need to know which three are worth the phone call. Use both, in that order.
Full pricing, including diligence packs and platform access →
What it is not
Read this before you rely on one
A zoning report is not a zoning verification letter. The letter is issued by the municipality — in Chicago, by the Zoning Administrator — and is the City's own position on the parcel: the document a lender or title company will accept at closing. A report is an independent analysis. It is not legal advice, and it does not represent you in an entitlement process.
Nor can a desk analysis see everything. Recorded easements, prior variations and administrative adjustments, planned-development ordinances that supersede base zoning, a map amendment filed last week — none of these are visible from the code and the map alone. That is precisely why every report ends with the seven-item manual checklist rather than pretending to be complete.
Who buys one
- Developers screening acquisition candidates, before spending real diligence money on any of them.
- Architects establishing the buildable envelope at the very front of a feasibility study.
- Brokers who need to say what a listing can actually hold, with something to back it.
- Lenders sanity-checking a sponsor's assumptions about density and height.
It is not a homeowner tool. The free zoning reference is useful to anyone; the paid parcel work assumes you are underwriting something.
Common questions
- What is a zoning report?
- A zoning report is a document stating what the zoning ordinance permits on one specific parcel: its district, the bulk standards that govern it (floor area ratio, height, density, setbacks, parking), the overlays and special districts it falls inside, and the constraints those combine into. A good one cites the ordinance section behind every figure, so the reader can check it rather than trust it.
- How much does a zoning report cost?
- A RealDevelop parcel feasibility report is $250. Traditional zoning reports from national providers are typically several times that and take days to a couple of weeks, because they involve a human reading the code and corresponding with the municipality. The trade-off is real and worth understanding: theirs includes municipal correspondence, ours does not.
- Is a zoning report the same as a zoning verification letter?
- No, and confusing them is expensive. A zoning verification letter is issued by the municipality itself and is the City’s own statement about the parcel — the document a lender or title company will accept at closing. A zoning report is an independent analysis. Reports are for deciding whether to pursue a site; the letter is for closing on it.
- How long does it take?
- The analysis is generated on demand — you enter an address and the parcel’s zoning, envelope and constraints are computed against the ordinance in seconds. That is the whole point of doing it structurally rather than by hand: screening forty candidate sites stops being a month of work.
- What if the parcel is outside Chicago?
- Parcel-level reports run across the Chicago metro today — 2.62M parcels across 255 jurisdictions. Outside that footprint the free zoning reference still applies, and each state page carries a waitlist that decides which market we ingest next.
- Can I rely on it for a purchase decision?
- Use it to decide what to pursue and to arrive at the City with the right questions. Confirm before you commit. A desk analysis cannot see recorded easements, prior variations and administrative adjustments, planned-development ordinances that supersede base zoning, or a map amendment filed last week — which is exactly why every report ends with a checklist of the seven things only a human request can settle.