# Westmont R-1 / R-2 / R-3 lot and building standards | BV360 Pre-Flight

Westmont sets lot area, width, depth, setbacks, coverage, and height for detached houses in its R districts. Pre-Flight checks the proposed envelope against the adopted standards.

## Plain English

R-1 is the least intensive single-unit district; R-2 and R-3 allow smaller lots. The front yard is measured from the street line, side yards are combined as a percentage of lot width with a minimum on each side, and the rear yard is a percentage of lot depth.
Detached houses in R-1 through R-3 are capped at 35 feet and 35% lot coverage. Confirm the exact district and any corner-lot or lot-of-record adjustment before relying on a number.

## Numbers Pre-Flight checks

| Field | Value | Source |
| --- | --- | --- |
| R-1 minimum lot area | 15,000 sq ft | Table II-2 |
| R-1 lot width / depth | 100 ft / 125 ft | Table II-2 |
| R-1 front / interior side / rear | 35 ft / 20% combined, 10 ft each / 20% of lot depth | Table II-2 |
| R-2 minimum lot area | 10,000 sq ft | Table II-2 |
| R-2 lot width / front / side | 70 ft / 35 ft / 20% combined, 7 ft each | Table II-2 |
| R-3 minimum lot area | 7,800 sq ft | Table II-2 |
| R-3 lot width / front / side | 50 ft / 35 ft / 20% combined, 5 ft each | Table II-2 |
| Maximum height / lot coverage | 35 ft / 35% | Table II-2; R-1 through R-3 |

Official source: Village of Westmont Zoning Ordinance · Table II-2 (https://westmont.illinois.gov/DocumentCenter/View/5043/VillageofWestmentZoningOrdinance-AsAmended-May-28-2026?bidId=). Effective / last checked: Amended through May 28, 2026.

Pre-Flight is not a permit, not legal advice, and not a substitute for a licensed design professional or the authority having jurisdiction. The city still decides.