San Ramon, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- RS zones lot coverage
- N.A., no percentage cap (Table 2-3)
- RC/HR/RE zones lot coverage
- N.A. (Table 2-2)
- Non-residential coverage, RM/RMH/RH/RVH
- 25%, 35%, 35%, 50%
- Non-residential FAR cap
- 0.50 in RM, RMH, RH, RVH
- Governing section
- Municipal Code § D2-9, Tables 2-2 to 2-4
- First-offense infraction fine
- up to $100, Section A1-32
Summary
San Ramon's zoning tables list residential lot coverage as "N.A." in every single-family and estate zone, RC, HR, RE, and all five RS districts, so no citywide percentage caps how much of a house lot a home can cover. Floor area ratio is also left unregulated for these houses; setbacks, height, and accessory-structure rules do the real work of bounding building bulk.
TABLE 2-3 - RS DEVELOPMENT STANDARDS ... Lot coverage, FAR Maximum percentage of total lot area that may be covered by structures, and maximum floor area ratio (FAR). Lot coverage N.A N.A N.A N.A N.A FAR N.A N.A N.A N.A N.A ... TABLE 2-4 - RM, RMH, RH, AND RVH DEVELOPMENT STANDARDS ... Non-Residential Lot coverage, FAR Maximum percentage of total lot area that may be covered by structures, and maximum nonresidential floor area ratio (FAR) for non-residential uses identified in Table 2-1. Lot coverage (non-residential) 25% 35% 35% 50% FAR (max non-residential) 0.50 0.50 0.50 0.50
Full Breakdown
" across every zone column, so the Community Development Department does not enforce a maximum percentage of lot coverage or floor area ratio against single-family, estate, hillside, or rural-conservation homes. That silence is deliberate: the same tables point builders instead to Section D3-10 for setback requirements and exceptions, Section D3-6 for the 35-foot height limit that applies in these zones, and Section D4-26 for accessory-structure standards, which together bound how much of a lot a house can occupy without ever stating a coverage percentage. 50 in all four zones, for the uses identified in Table 2-1.
Residential lot coverage inside those same multi-family zones is still not separately capped. Section D2-9 requires that new subdivisions, land uses, and alterations be "designed, constructed, and established in compliance with the requirements in Tables 2-2, 2-3, and 2-4" plus the parking, landscaping, and Objective Design and Development Standards found in Division D3. The City last amended these zoning tables by Ordinance No. 534, effective November 13, 2025.
Violations & Fines
There is no lot-coverage citation to write in residential zones because none exists on the books; a homeowner cannot be fined for building "over coverage" where the tables read N.A. Exceeding the 25-50 percent non-residential caps in Table 2-4, or building past the D3-6 height limit or D3-10 setbacks, is enforced as a general code infraction under Section A1-32: up to $100 for a first offense, $200 for a second within a year, and $550 for each further violation, with Section A1-33 counting a continuing violation as a separate offense every day it persists.
Frequently Asked Questions
Does San Ramon limit how much of my lot a house can cover?
Is floor area ratio (FAR) capped instead?
Do apartment or commercial buildings face a coverage cap?
What actually limits how big a house can be if there's no coverage cap?
Sources & Official References
Other rules in San Ramon
California rules heatmap·Compare San Ramon to another location·View the California building setbacks & zoning overview
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Lot Coverage Limits in Nearby Cities
How other cities in Contra Costa County handle lot coverage limits.