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Fairfield · Zoning · IL

Fairfield IL zoning: height, setbacks and lot size

In Fairfield's IL zone, generally buildings can be up to 50 ft tall, the front setback is 20 ft and the minimum lot size is 1 acre, with the conditions listed below (Fairfield code, read October 2026).

Key points

  • Maximum building height: 50 ft
  • Minimum front setback: 20 ft
  • Minimum side setback: 0 ft (Or as building and fire codes require; 25 ft, plus 1 ft per foot of height over 35 ft, next to residential zoning)
  • Minimum rear setback: 0 ft (Or as building and fire codes require; 25 ft, plus 1 ft per foot of height over 35 ft, next to residential zoning)
  • Minimum lot size: 1 acre (for new subdivisions only)
  • Maximum floor area ratio (FAR): 0.6

IL is a zoning district in Fairfield. Every value below was read from the Fairfield Municipal Code and links to its section (read October 2026). State laws such as the ADU and SB 9 rules can allow more on a residential lot. General information, not legal advice — read the code text and check with the city before you build.

Development standards in IL

The general rule for a typical lot in this zone. Zoning tables often attach notes, such as rules for corner lots, lots next to a residential zone, or new subdivisions only. Open “code text” under a value to see the table cell or sentence it was read from.

Maximum building height
50 ft
§ 25.24.3 · code text
Table row “Building Height Limits”, column “IL”: 50’
Minimum front setback
20 ft
§ 25.24.3 · code text
Table row “Front and Street Side Yard”, column “IL”: 20’
Minimum side setback
0 ft
Applies: Or as building and fire codes require; 25 ft, plus 1 ft per foot of height over 35 ft, next to residential zoning
§ 25.24.3 · code text
Table row “. . . Minimum”, column “IL”: 0’ or as required to meet applicable building and fire codes
Minimum rear setback
0 ft
Applies: Or as building and fire codes require; 25 ft, plus 1 ft per foot of height over 35 ft, next to residential zoning
§ 25.24.3 · code text
Table row “. . . Minimum”, column “IL”: 0’ or as required to meet applicable building and fire codes
Minimum lot size
1 acre
Applies: for new subdivisions only
§ 25.24.3 · code text
Table row “Lot Area (for new subdivisions only)”, column “IL”: 1 acre
Maximum floor area ratio (FAR)
0.6
§ 25.24.3 · code text
Table row “Floor Area Ratio (maximum percent of net lot area)”, column “IL”: 0.6

Uses in IL

Uses the code's use tables allow in IL, or allow with a permit. Each links to its page with the code section.

When a different number applies

The code sets other values for particular lots, buildings or locations in IL:

  • Minimum rear setback: 15 ft — rear yard abutting roadway § 25.24.3

Not on this page

We did not find a general stories, lot coverage, density limit for IL in the zoning tables we read. The code may still set one elsewhere — check the Fairfield Municipal Code.

Other Fairfield zoning districts

Who this affects

HomeownersArchitects and designersDevelopersReal estate agents

Frequently asked questions

What is the maximum building height in Fairfield's IL zone?

50 ft — Fairfield Municipal Code § 25.24.3.

What is the minimum front setback in Fairfield's IL zone?

20 ft — Fairfield Municipal Code § 25.24.3.

What is the minimum side setback in Fairfield's IL zone?

0 ft (or as building and fire codes require; 25 ft, plus 1 ft per foot of height over 35 ft, next to residential zoning) — Fairfield Municipal Code § 25.24.3.

What is the minimum rear setback in Fairfield's IL zone?

0 ft (or as building and fire codes require; 25 ft, plus 1 ft per foot of height over 35 ft, next to residential zoning) — Fairfield Municipal Code § 25.24.3.

What is the minimum lot size in Fairfield's IL zone?

1 acre (for new subdivisions only) — Fairfield Municipal Code § 25.24.3.

General information, not legal advice.

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