San Joaquin County · Zoning · R-MH
San Joaquin County R-MH zoning: height, setbacks and lot size
In San Joaquin County's R-MH zone, generally buildings can be up to 40 ft tall, the front setback is 15 ft and the minimum lot size is 3,000 sq ft, with the conditions listed below (San Joaquin County code, read October 2026).
Key points
- Maximum building height: 40 ft (Dwellings)
- Minimum front setback: 15 ft (Front and street side yards, regular case; larger figure applies on narrow rights-of-way (see below))
- Minimum side setback: 5 ft (Main structure)
- Minimum rear setback: 10 ft (Main structure)
- Minimum lot size: 3,000 sq ft
- Maximum density: 18.75 units/net area
R-MH is a zoning district in San Joaquin County. Every value below was read from the San Joaquin County 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-MH
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 | 40 ft Applies: Dwellings § 9-200.030 · code textTable row “Dwellings”, column “R-MH”: 40 |
|---|---|
| Minimum front setback | 15 ft Applies: Front and street side yards, regular case; larger figure applies on narrow rights-of-way (see below) § 9-200.030 · code textTable row “Front & Street Side—Regular; Right-of-Way less than 50′”, column “R-MH”: 15; 40 3 |
| Minimum side setback | 5 ft Applies: Main structure § 9-200.030 · code textTable row “Interior Side - Main Structure; Accessory Structures”, column “R-MH”: 5; 5 |
| Minimum rear setback | 10 ft Applies: Main structure § 9-200.030 · code textTable row “Rear - Main Structure; Accessory Structures; Reverse Corner Lots”, column “R-MH”: 10; 5; 5 |
| Minimum lot size | 3,000 sq ft § 9-200.030 · code textTable row “Minimum Lot Size (sq. ft.)”, column “R-MH”: 3,000 |
| Maximum density | 18.75 units/net area § 9-200.030 · code textTable row “Maximum Density (units/net area)”, column “R-MH”: 18.75 |
Uses in R-MH
Uses the code's use tables allow in R-MH, or allow with a permit. Each links to its page with the code section.
- Single-family home — Allowed
- Duplex — Allowed
- Apartment building — Needs an administrative use permit (zoning administrator)
- Residential care home (7 or more) — Needs an administrative use permit (zoning administrator)
- Child care center — Needs a conditional use permit (planning commission)
- Emergency shelter — Needs an administrative use permit (zoning administrator)
When a different number applies
The code sets other values for particular lots, buildings or locations in R-MH:
- Minimum front setback: 40 ft — Where the right-of-way is less than 50 ft; measured from the road centerline § 9-200.030
- Minimum side setback: 10 ft — Where an R-MH zone abuts an R-L or R-VL zone and a structure greater than two stories is proposed § 9-200.030
- Minimum rear setback: 20 ft — Where an R-MH zone abuts an R-L or R-VL zone and a structure greater than two stories is proposed § 9-200.030
Not on this page
We did not find a general stories, lot coverage, FAR limit for R-MH in the zoning tables we read. The code may still set one elsewhere — check the San Joaquin County Municipal Code.
Other San Joaquin County zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in San Joaquin County's R-MH zone?
40 ft (dwellings) — San Joaquin County Municipal Code § 9-200.030.
What is the minimum front setback in San Joaquin County's R-MH zone?
15 ft (front and street side yards, regular case; larger figure applies on narrow rights-of-way (see below)) — San Joaquin County Municipal Code § 9-200.030.
What is the minimum side setback in San Joaquin County's R-MH zone?
5 ft (main structure) — San Joaquin County Municipal Code § 9-200.030.
What is the minimum rear setback in San Joaquin County's R-MH zone?
10 ft (main structure) — San Joaquin County Municipal Code § 9-200.030.
What is the minimum lot size in San Joaquin County's R-MH zone?
3,000 sq ft — San Joaquin County Municipal Code § 9-200.030.
General information, not legal advice.
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