Rancho Cucamonga LM zoning: height, setbacks and lot size

LM (Low Medium) is a zoning district in Rancho Cucamonga. Every value below was read from the Rancho Cucamonga 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 LM

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 § 17.36.010 · code text Table row “Primary buildings”, column “LM”: 35 ft
Minimum front setback	32 ft Applies: average setback measured from the curb face; it may vary by 5 ft either way See notes 4, 5 below the table in the code. § 17.36.010 · code text Table row “Front yard (4)”, column “LM”: 32 ft (5) Note 4: Setbacks are measured between the structure and curb face in front yards and corner side yards. Setbacks are measured between the structure and property line in rear yards and interior side yards. Note 5: Average setback, which shall vary +/- five feet.
Minimum rear setback	15 ft See note 4 below the table in the code. § 17.36.010 · code text Table row “Rear yard (4)”, column “LM”: 15 ft Note 4: Setbacks are measured between the structure and curb face in front yards and corner side yards. Setbacks are measured between the structure and property line in rear yards and interior side yards.
Minimum lot size	5,000 sf § 17.36.010 · code text Table row “Lot area (minimum)”, column “LM”: 5,000 sf
Maximum lot coverage	50% § 17.36.010 · code text Table row “Lot coverage”, column “LM”: 50%
Maximum density	8 du/ac See note 3 below the table in the code. § 17.36.010 · code text Table row “Maximum density”, column “LM”: 8 du/ac (3) Note 3: Developing multi-family in the LM zone and single-family in the M zone at the maximum density requires compliance with Standards for Higher Residential Densities as outlined in section 17.36.020(D) .

Uses in LM

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

Duplex — Allowed
Apartment building — Allowed
Bed and breakfast — Needs a minor use permit
Private school — Needs a minor use permit — see note

Not on this page

We did not find a general stories, side setback, FAR limit for LM in the zoning tables we read. The code may still set one elsewhere — check the Rancho Cucamonga Municipal Code.

Other Rancho Cucamonga zoning districts

Who this affects

HomeownersArchitects and designersDevelopersReal estate agents

Frequently asked questions

What is the maximum building height in Rancho Cucamonga's LM zone?

35 ft — Rancho Cucamonga Municipal Code § 17.36.010.

What is the minimum front setback in Rancho Cucamonga's LM zone?

32 ft (average setback measured from the curb face; it may vary by 5 ft either way) — Rancho Cucamonga Municipal Code § 17.36.010.

What is the minimum rear setback in Rancho Cucamonga's LM zone?

15 ft — Rancho Cucamonga Municipal Code § 17.36.010.

What is the minimum lot size in Rancho Cucamonga's LM zone?

5,000 sf — Rancho Cucamonga Municipal Code § 17.36.010.

What is the maximum lot coverage in Rancho Cucamonga's LM zone?

50% — Rancho Cucamonga Municipal Code § 17.36.010.

General information, not legal advice.