ChicagoNeighborhood
Hermosa zoning — Chicago
4,280 lots, and 84% of them carry one district. Here is what the zoning on the ground looks like — and what outranks it.
Counted from the parcel table the LotGrade analyzer reads, by the City of Chicago’s neighborhood boundary — not the community area, which draws a different and wider line. Zoning rules link to Title 17 in our hosted zoning code.
On the ground
What Hermosa is zoned
One district, RS-3, covers 84% of the lots here. That is the number worth knowing first, because it sets what a typical lot here can become before any overlay or relief is considered.
| District | Lots | Share |
|---|---|---|
| RS-3 | 3,609 | 84% |
| B1-1 | 137 | 3% |
| M1-1 | 134 | 3% |
| C1-1 | 131 | 3% |
| PMD 9 | 93 | 2% |
| B3-1 | 59 | 1% |
| B3-2 | 28 | 1% |
| M2-1 | 17 | 0% |
| 14 other districts | 72 | 2% |
The 8 most common of 22 zoning districts among 4,280 lots, counted from the same parcel table the analyzer reads. Planned developments and planned manufacturing districts appear under the number stamped on the map, as PD 30 or PMD 9; each is negotiated on its own terms, so there is no district page behind the number.
The typical lot
What a normal lot here looks like
The median lot in Hermosa is 3,750 sq ft; the average is 5,826 sq ft, pulled up by the larger parcels above it. A standard Chicago lot is 25 × 125 ft, or 3,125 sq ft, so the middle of this neighborhood is larger than the standard lot, by about 20%.
To see what that allows — setbacks, floor area, height, units, open space and parking, each cited — put the district and the lot size into the Chicago zoning calculator. For the reasoning behind each number, start with floor area ratio and how many units fit.
Overrides
One rule outranks the district
The district on the map is where the answer starts, not where it ends. In Hermosa, one thing moves it:
- The 606 overlay — 2,026 lots, 47% of them. Inside it, what your neighbors built decides what you may build: on a block face that is mostly multi-unit, a detached house may not be established at all. See the 606 and Pilsen block rules.
90 lots are assessed as vacant land. A vacant lot is where the district, the overlay and the block test all apply at once with nothing existing to argue from — and where nonconforming rights give you nothing, because there is nothing to have continued.
Change
How often the map actually moves
22 zoning map amendments have been recorded in the wider Hermosa community area between 2019 and 2025 — the City Clerk records a rezoning by community area rather than by neighborhood, so this count covers more ground than the figures above.
A rezoning is the route when the district itself is the obstacle, and it is also what pulls in the Affordable Requirements Ordinance. For the alternatives that do not need one, see variations, special uses and planned developments.
Questions
Common questions
What zoning district is most of Hermosa?
RS-3 — 3,609 of 4,280 lots, 84% of its lots. The rest runs to business and commercial districts along the corridors, with a little manufacturing. Every district is explained in the Chicago Zoning Field Guide.
How big is a typical lot in Hermosa?
The median is 3,750 sq ft against a standard Chicago lot of 25 × 125 ft (3,125 sq ft) — larger than the standard lot, by about 20%. The average is 5,826 sq ft.
Is Hermosa in the 606 zoning district?
2,026 of its lots are — 47% of them. Inside that boundary the Predominance of the Block rules apply: in RS-3 and RT-3.5, a detached house may not be established where most of the block face already holds buildings with more than one unit, and a demolition permit carries a surcharge of $20,000 per unit.
Can I build without parking in Hermosa?
Not by the transit-served route: no lot in Hermosa sits within 2,640 ft of a rail station entrance or 1,320 ft of a listed bus corridor, so the district's parking ratio applies in full. The other reductions — narrow lots without alley access, landmarks, administrative adjustments — still stand. See parking minimums.
Where do these numbers come from?
The Cook County and City of Chicago parcel records the LotGrade analyzer reads, counted by the City of Chicago's neighborhood boundary. Zoning rules come from the adopted ordinance, Title 17. Neighborhood lines are a convention rather than a legal boundary — the community area is the official geography — so treat a lot near the edge as belonging to whichever you can verify.
For a real address
Check the real numbers for a real parcel
LotGrade reads every one of these rules against a single address in Hermosa — the district, the overlays, the block test and the buildable envelope — and shows whether the numbers work.
The analyzer requires an account — you’ll be asked to sign in. The Zoning Field Guide, the zoning code and these guides are free and need no login.