Campbell R-1 zoning: height, setbacks and lot size

R-1 is a zoning district in Campbell. Every value below was read from the Campbell 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 R-1

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	35 ft § 21.08.050 · code text Table row “Main Structure Maximum Height”, column “R-1”: 35 ft.
Maximum number of stories	2 ½ stories § 21.08.050 · code text Table row “Main Structure Maximum Stories”, column “R-1”: 2 ½ stories
Minimum front setback	20 ft § 21.08.050 · code text Table row “Front”, column “R-1”: 20 ft.
Minimum side setback	5 ft Applies: Or one-half the height of the adjacent building wall, whichever is greater The code attaches note 2 to this value. This page does not show it; read the code before relying on the number. § 21.08.050 · code text Table row “Side (each)”, column “R-1”: 5 ft. (2)
Minimum rear setback	5 ft Applies: Or one-half the height of the adjacent building wall, whichever is greater The code attaches note 2 to this value. This page does not show it; read the code before relying on the number. § 21.08.050 · code text Table row “Rear”, column “R-1”: 5 ft. (2)
Maximum lot coverage	40% § 21.08.050 · code text Table row “Maximum Lot Coverage”, column “R-1”: 40%
Maximum floor area ratio (FAR)	0.45 See note 1 below the table in the code. § 21.08.050 · code text Table row “Maximum Floor Area Ratio (FAR)”, column “R-1”: .45 (1) Note 1: The Planning Commission may approve a F.A.R. of up to 0.50 with approval of a site and architectural review permit when it makes both of the following findings:

When a different number applies

The code sets other values for particular lots, buildings or locations in R-1:

Minimum side setback: one-half the building wall height adjacent to the side property line — Required when greater than the indicated five-foot setback. § 21.08.050
Minimum rear setback: one-half the building wall height adjacent to the rear property line — Required when greater than the indicated five-foot setback. § 21.08.050
Maximum floor area ratio (FAR): 0.50 — The Planning Commission may approve up to 0.50 with approval of a site and architectural review permit and required findings. § 21.08.050

Not on this page

We did not find a general lot size, density limit for R-1 in the zoning tables we read. The code may still set one elsewhere — check the Campbell Municipal Code.

Other Campbell zoning districts

Who this affects

HomeownersArchitects and designersDevelopersReal estate agents

Frequently asked questions

What is the maximum building height in Campbell's R-1 zone?

35 ft — Campbell Municipal Code § 21.08.050.

What is the maximum number of stories in Campbell's R-1 zone?

2 ½ stories — Campbell Municipal Code § 21.08.050.

What is the minimum front setback in Campbell's R-1 zone?

20 ft — Campbell Municipal Code § 21.08.050.

What is the minimum side setback in Campbell's R-1 zone?

5 ft (or one-half the height of the adjacent building wall, whichever is greater) — Campbell Municipal Code § 21.08.050. The code attaches notes or conditions to this value; read the section before relying on it.

What is the minimum rear setback in Campbell's R-1 zone?

General information, not legal advice.