Fairfield HWT zoning: height, setbacks and lot size

HWT (MU-WTS) 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 HWT

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 Applies: Commercial buildings § 25.23.3 · code text Table row “Building Height Limit”, column “HWT”: 50'
Minimum side setback	0 ft Applies: Commercial buildings, where permitted; the code does not say where § 25.23.3 · code text Table row “... minimum”, column “HWT”: 0' where permitted
Minimum rear setback	15 ft Applies: Commercial buildings; add 1 ft of setback for each 1 ft of building height over 20 ft, up to a 40 ft maximum setback § 25.23.3 · code text Table row “... minimum”, column “HWT”: 15'
Minimum lot size	10,000 sq ft Applies: Commercial buildings; new subdivisions only § 25.23.3 · code text Table row “Lot Area (sq. ft. for new subdivisions only)”, column “HWT”: 10,000
Maximum lot coverage	60% Applies: Multifamily buildings § 25.23.3 · code text Table row “Lot Coverage (%)”, column “HWT MU-WTS”: 60%
Maximum floor area ratio (FAR)	2.0 Applies: Commercial buildings § 25.23.3 · code text Table row “Floor Area Ratio”, column “HWT”: 2.0
Maximum density	15 to 48 units per acre Applies: Multifamily buildings; the code sets a range: at least 15, at most 48 § 25.23.3 · code text Table row “Density (dwelling units per acre)”, column “HWT MU-WTS”: 15-48

Uses in HWT

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

Single-family home — Allowed
Duplex — Allowed
Apartment building — Allowed
Child care center — Allowed
Church or place of worship — Allowed
Private school — Needs a conditional use permit

When a different number applies

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

Minimum side setback: 10 ft — Multifamily buildings § 25.23.3
Minimum lot size: 7,500 sq ft — Multifamily buildings; new subdivisions only § 25.23.3

Not on this page

We did not find a general stories, front setback limit for HWT 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 HWT zone?

50 ft (commercial buildings) — Fairfield Municipal Code § 25.23.3.

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

0 ft (commercial buildings, where permitted; the code does not say where) — Fairfield Municipal Code § 25.23.3.

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

15 ft (commercial buildings; add 1 ft of setback for each 1 ft of building height over 20 ft, up to a 40 ft maximum setback) — Fairfield Municipal Code § 25.23.3.

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

10,000 sq ft (commercial buildings; new subdivisions only) — Fairfield Municipal Code § 25.23.3.

What is the maximum lot coverage in Fairfield's HWT zone?

60% (multifamily buildings) — Fairfield Municipal Code § 25.23.3.

General information, not legal advice.