Multifamily and Duplex Properties for Sale in Fremont: Zoning and Rent Rules
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What multifamily in Fremont looks like
Fremont’s rental stock is spread across several eras and areas:
- Garden apartments from the 1970s and 1980s along Fremont Boulevard, Paseo Padre Parkway and Mowry Avenue
- Duplexes and small complexes in Centerville, Irvington and Niles
- Townhome communities throughout the city
- Newer mid-rise buildings near Fremont BART and in the Warm Springs Innovation District
The city also has several mobile home parks under local space rent rules. For a two- to four-unit building, see financing 2-4 unit properties. For larger complexes, see apartment building loans.
Where the zoning allows it
Fremont’s residential districts are in Chapter 18.90. The R-3 district uses a numbered density suffix.
| District | Units allowed | Notes |
|---|---|---|
| R-2 Two-family | Duplex on an 8,000 sq ft lot, 70 ft wide | A single-family home built to R-1-6 standards may rule out a later duplex |
| R-1-6 to R-1-40 | Single-family; duplex lots need 8,000 to 40,000 sq ft | The code’s duplex footnote refers to corner lots, so confirm with Planning |
| R-3-10 / -11 / -14 / -15 | 8.3–15 units per net acre | 6,000 sq ft minimum lot; 60 ft wide |
| R-3-18 / -23 / -27 / -30 | 14.6–29.9 units per net acre | Lots 80 ft wide above R-3-18 |
| R-3-35 / -50 / -70 | 30–70 units per net acre | The highest tiers, mostly near transit |
| R-G Garden Residential | Apartments built before July 22, 2003 | No new land is expected to be rezoned R-G |
| MX, TC-P, TC-T, C-O, C-N | Mixed use with housing at 14.6 units per acre minimum | C-G and C-R do not allow mixed use |
| WSI Warm Springs | 50 units per acre minimum within a quarter mile of BART, 30 elsewhere | Residential buildings must be at least three stories |
| Downtown D | 50 units per acre minimum, outside the civic center | Up to 8 stories |
Fremont’s density ranges are a floor as well as a ceiling. The minimum density in R-3, WSI and Downtown can rule out a low-density rebuild, so check both ends before you plan a redevelopment.
ADUs and SB 9. State ADU and SB 9 law applies on single-family lots. We did not open Fremont’s local ADU chapter, so confirm its standards with Planning. Fremont’s Rent Review Ordinance exempts JADUs but not ADUs. See our ADU investment guide and SB 9 lot split guide.
Rent rules: state cap plus Fremont rent review
Fremont is not on the Attorney General’s list of cities with local rent caps. Covered units follow the statewide cap, which for the San Francisco Area region, including Alameda County, is 6.3% for increases from August 1, 2025, and 8.8% for increases from August 1, 2026 through July 31, 2027. State just cause rules apply, and we found no separate Fremont just cause ordinance. See our AB 1482 guide and just cause eviction guide.
On top of state law, Fremont has a Rent Review Ordinance, Chapter 9.60, adopted in 2017. It covers nearly all rental units in the city, whatever their age or size. The exemptions are hotels, dorms, mobile home spaces, JADUs and shared housing. Its main rules:
- Notice. Give written notice of the rent review program with every increase. An increase without it is not valid.
- Frequency. No more than one increase every 12 months.
- Reasons. An increase over 5% must state its reason, and the city recommends 90 days’ notice.
- Review. For an increase over 5% in 12 months, either side may ask for consultation or mediation within 15 days. A Rent Review Board hearing follows within 45 days.
- Outcome. Signed consultation or mediation agreements are binding. Board decisions are advisory unless both sides agree to be bound.
- Retaliation. Adverse action within 180 days of a tenant using the ordinance is presumed retaliatory, with penalties up to $2,000.
Fremont rental property rules
Program fee. Landlords who own five or more rental units in Fremont pay the full cost of the program, split equally across units. The city’s fee page sets the fee for fiscal 2025-26 at $23 per unit, adopted November 18, 2025. Landlords with fewer than five units are exempt.
Source of income. Chapter 9.60 also bars discrimination based on a tenant’s source of income.
Mobile home parks. Chapter 9.55 limits space rent increases to one every 12 months. The allowed increase is the greatest of 3%, $10 a month or 60% of the regional CPI change, with a 6% ceiling. Capital improvement pass-throughs are capped at 5% of current rent. A transfer can reset the rent only in limited cases, such as when a commercial buyer replaces the home.
Business tax. Rental operators must register with the city’s Revenue Division. Registration is $30 plus a $4 state fee, and more tax may be due at renewal.
Building and closing-cost issues
Many Fremont complexes are 1970s and 1980s wood-frame buildings. They warrant a seismic retrofit review, although we did not verify a mandatory city soft-story program. Buildings of three or more units with elevated balconies or decks need SB 721 inspections. Fremont has no city transfer tax. The County Clerk-Recorder lists none for Fremont, so only the county’s $0.55 per $500 applies.
Underwriting a Fremont multifamily purchase
- Classify units under AB 1482, and model increases at or under the regional cap.
- Ask for every rent increase notice from the past year and confirm each included the rent review notice.
- Ask whether any tenant has filed for rent review and whether any agreements are binding.
- Confirm the R-3 density suffix or other district, and whether minimum density affects any redevelopment plan.
- Collect leases, the rent roll and two years of statements, and get estoppel certificates.
- Add the per-unit program fee and reassessed property tax to your rental property analysis.
Questions people ask
Does Fremont have rent control?
Not a local cap. The state cap applies, plus the Rent Review Ordinance, which lets either party seek review of increases over 5%.
Are rent review decisions binding?
Signed agreements from consultation or mediation are binding. Rent Review Board decisions are advisory unless both sides agree.
What happens if I skip the rent review notice?
The increase is not valid. An unlawful increase is a full defense to an eviction for nonpayment of it.
How much is Fremont’s rent program fee?
$23 per unit for fiscal 2025-26, billed only to landlords with five or more units.
Can I build a duplex in R-2?
Yes, on a lot of at least 8,000 square feet and 70 feet wide.
What densities does R-3 allow?
From 8.3 to 70 units per net acre, depending on the suffix, such as R-3-30 or R-3-70.
How much can mobile home space rents rise?
The greatest of 3%, $10 a month or 60% of CPI each year, but never more than 6%.
Sources & notes
- Fremont Municipal Code Chapter 18.90, Residential Districts (GoCodebook)
- Chapters 18.45, 18.47 and 18.49
- Chapter 9.60, Rent Review and Chapter 9.55, Mobile Home Rent (Code Publishing)
- City of Fremont, Rent Review Landlord Fee
- City of Fremont, Business Tax
- California Attorney General, Rent Caps
- Alameda County Clerk-Recorder, Real Property Transfer Tax
General information, not legal or tax advice. Last reviewed October 2026 by Matthew Martinez.
Related: Fremont real estate guide · Commercial real estate in Fremont · Multifamily investing guide · Investor services
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