Residential district

Fairfield RLM Zoning: Residential, Low Medium Density District

Low medium density district for single family neighborhoods on minimum lots of 4,500 to 6,000 square feet, allowing 4.5 to 8 dwelling units per gross developable acre and compact small-lot design where no lot-size suffix is applied.

5,227 ac

mapped in this district

19.7%

of Fairfield's districted land

governing sections

shared rules that apply

Where RLM's rules live

The district's own sections in Fairfield City Code, Chapter 25 (Zoning):

§25.20
§25.20.1
§25.20.2
§25.20.3
§25.20.4
§25.12.2
§25.20.3.2
Table 25-1
Table 25-3
Table 25-4
Table 25-5
§25.10.5
§25.30.5
§25.30.6
§25.40.6
§25.32.22
§25.34
§25.34.8
§25.32.14

Shared rules that apply in RLM

Parking and loading §25.3428 of 28 districts

Measurements §25.5128 of 28 districts

Trash and recyclables enclosures §25.30.728 of 28 districts

Grading permit and off-site hauling review §25.24028 of 28 districts

Grading reports and geotechnical peer review §25.24328 of 28 districts

Development review for grading and building additions Table 25-1828 of 28 districts

Sign prohibitions and express exceptions §25.130928 of 28 districts

Existing legal lots and ordinance applicability §25.10.527 of 28 districts

Height exceptions, front-yard averaging and projections §25.30.627 of 28 districts

Conditional use permits for height and FAR §25.40.627 of 28 districts

Bicycle parking ratios and exemption thresholds §25.34.823 of 28 districts

Accessory and junior accessory dwelling units §25.20.4.1117 of 28 districts

Condominium conversion affordability and approval §25.32.1414 of 28 districts

Supportive housing standards §25.32.2213 of 28 districts

Plan lines and building setback lines §25.30.513 of 28 districts

Multifamily open space, recreation amenities, and landscaping §25.20.4.810 of 28 districts

Accessory structures and room additions §25.20.4.16 of 28 districts

Residential use permissions and notes Table 25-16 of 28 districts

Non-residential development in residential districts §25.20.4.96 of 28 districts

Density bonus §25.384 of 28 districts

Small home lot development eligibility and standards §25.20.3.54 of 28 districts

RLM without suffix and small-lot single family §25.20.3.23 of 28 districts

Other residential districts in Fairfield

HR Heart of Fairfield Residential District RH Residential, High Density District RL Residential, Low Density District RM Residential, Medium Density District RVH Residential, Very High Density District RVL Residential, Very Low Density District

Is your parcel in RLM? Check an address and ask what you can build, with the section behind each answer.

Check an address

Sources: Fairfield City Code, Chapter 25 (Zoning); City of Fairfield “Zoning” layer, last edited Sep 16, 2026. Research only, not legal advice. Back to Fairfield zoning.