Fremont, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- First-story cap
- 40% of lot area (Table 18.90.040)
- Mission Palms two-story cap
- 35% overall lot coverage
- Mission Ranch two-story cap
- 30% overall lot coverage
- Accessory structure cap
- 20% of lot area
- Reviewing body
- Planning Division, design review permit
Summary
Fremont caps a single-family home's first-story footprint, including the garage, at 40 percent of the lot under Table 18.90.040 of the R-1 and R-2 district standards. Two-story homes in Mission Palms and Mission Ranch face tighter tiered limits instead of a flat 40 percent.
Maximum lot coverage for first story (includes garage area), as a percentage of lot area ... 40 [R-1-6] / 40 [R-1-6 Glenmoor Gardens] / 40 [R-1-8] ... 11 Lot coverage varies based upon the number of stories. A one-story home may have up to 40 percent lot coverage. The overall square footage of a two-story home is limited to 35 percent of the lot area. ... 12 Lot coverage varies based upon the number of stories. A one-story home may have up to 40 percent lot coverage. A two-story home is only possible if the first-floor lot coverage first reaches 22 percent but does not exceed 30 percent. The overall square footage of a two-story home, however, then becomes limited to 30 percent of the lot area.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 02-2026, passed May 5, 2026).
Full Breakdown
040 (Additional development standards applicable to R-1 and R-2 districts). The table sets "Maximum lot coverage for first story (includes garage area), as a percentage of lot area" at 40 percent for the standard R-1-6, R-1-6 Glenmoor Gardens, R-1-8, R-1-10, R-1-20, and R-1-40 districts, and for R-2 duplex lots. 1650 defines "lot coverage" as the portion of a lot covered by a building or structure that is more than 50 percent enclosed with walls and roof, expressly including attached sunrooms, enclosed patios, and similar enclosed structures within the measured footprint.
Two designated neighborhoods carry their own tiered rules instead of the flat 40 percent cap. 040), a one-story home may reach 40 percent lot coverage, but a two-story home's overall footprint is capped at 35 percent, with the second story itself limited to 60 percent of the first-story area or 1,000 square feet, whichever is less. In the R-1-8 Mission Ranch district (footnote 12), a one-story home may also reach 40 percent, but a second story is only permitted if the first-floor coverage falls between 22 and 30 percent, and once a second story is added the overall two-story footprint drops to a 30 percent lot coverage ceiling.
Second-story floor area is separately capped citywide by size, ranging from 1,000 square feet in R-1-6 up to 6,000 square feet in R-1-40, per the same table. 1650's lot coverage definition. 235 for development in residential districts and ties setback, height, and coverage compliance into that same review.
Violations & Fines
Fremont checks lot coverage against Table 18.90.040 as part of building permit plan review handled by the Planning Division within Community Development. A footprint that exceeds the 40 percent first-story cap, or the tighter Mission Palms/Mission Ranch tiers, is rejected at plan check and cannot be issued a building permit until the plans are revised or a variance is obtained. Under Fremont Municipal Code Section 18.235 (design review) and the nonconforming-structure rules, a structure built over the coverage limit is treated as a nonconforming structure that may not be enlarged or altered in a way that increases the degree of nonconformity, restricting future additions until the excess coverage is corrected.
Frequently Asked Questions
What is the maximum lot coverage for a Fremont single-family home?
Do Mission Palms and Mission Ranch homes follow the same 40 percent rule?
Does an accessory structure count toward the 40 percent cap?
Sources & Official References
Other rules in Fremont
California rules heatmap·Compare Fremont to another location·View the California building setbacks & zoning overview
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Lot Coverage Limits in Nearby Cities
How other cities in Alameda County handle lot coverage limits.