Why does a legal four-unit walk-up in the Heights routinely draw a stack of competitive offers, while a five-unit building two blocks over sits at a lower price per door with less traffic through the door? The condition is comparable. The rents are comparable. The difference is a line drawn in the Jersey City Municipal Code, and it has nothing to do with the block.
That line is Chapter 260, the city's rent control ordinance. Buildings with four units or fewer are exempt from its rent cap. The owner does not have to live there for the exemption to apply. Buildings with five units or more fall under a rent cap tied to the Consumer Price Index, capped at 4% a year, whichever figure is lower. In January 2026, Steadily reported that the city's own CPI chart put the actual allowable increase between 3.0% and 3.4%, comfortably under that ceiling.
That gap between "exempt" and "capped" is the entire story for anyone underwriting a multi-family purchase here in 2026. It is also a story the city almost rewrote last November, and the fact that it tried matters as much as the fact that it failed.
What Changes the Moment a Building Crosses to Five Units
A four-unit building in Jersey City can reset rent to whatever the market will bear at every lease turnover. Standard notice is still required.
A five-unit building lives under a different set of rules. Every increase has to be calculated against the CPI comparison the ordinance specifies, capped at 4%. A tenant can challenge it through the Division of Tenant-Landlord Relations. If the landlord wants more than the cap allows, because of a capital improvement or a jump in property taxes, that requires a separate petition to the Rent Leveling Board, with its own fee and documentation, before the surcharge can be collected.
None of that is a reason to avoid five-plus unit buildings. Larger buildings still cash flow, and the cap tracks inflation rather than freezing rent outright. But it means the appreciation math on a value-add strategy changes at the exact moment a fifth unit gets added, whether that unit comes from a basement conversion, an attic buildout, or simply buying a building that already has one more door than the one next to it.
The Loophole the City Tried to Close in November
For years, the practical response to that line has been straightforward. An investor who wants to control a portfolio of rental units buys five separate four-unit buildings, often through five separate LLCs, rather than one larger building. Each individual deed stays under the threshold. None of it is subject to the rent cap, even though the same person or entity is setting rent across the portfolio.
The city noticed. In the fall of 2025, the Jersey City Council introduced Ordinance 25-125, described in the filing as legislation to address institutional ownership of units not currently subject to rent control. The intent was to look past the individual deed and treat commonly controlled portfolios as if they were a single larger building, closing the LLC-by-LLC workaround for non-owner-occupied properties.
The ordinance was introduced on first reading on November 12, 2025, and came up for its second and final reading on November 25, 2025. The council voted it down. The rent-cap exemption for one-to-four-unit buildings remains exactly where it was.
That outcome is worth sitting with for a second. This was not a routine housekeeping vote. It was a direct attempt to close the specific structure that makes the four-unit segment behave the way it does, and it came within one council vote of succeeding. Anyone buying into that segment today is buying into a policy that has already survived one serious challenge, not a rule that has never been questioned.
This Is Not the First Time the Line Was Targeted
The 2025 ordinance was not even the first attempt. During the early months of the COVID-19 emergency, the Jersey City Council considered a rent freeze ordinance that would have suspended the same one-to-four-unit rent-cap exemption specifically for non-owner-occupied properties, with the suspension set to run through August 1, 2020, tied to the governor's emergency declaration.
That earlier draft did not survive either, but it establishes the pattern. Twice in five years, the city has looked at the four-unit exemption and asked whether non-owner-occupied portfolios should keep the benefit of it. Twice, the exemption held. A buyer modeling a ten-year hold on a small multi-family in Jersey City is not just underwriting rent growth. They are underwriting the durability of a carve-out that keeps coming back up for debate.
How Jersey City Compares to Newark on the Same Question
The four-unit exemption is not universal across Hudson and Essex County towns, and the comparison sharpens what Jersey City is actually offering. According to Vanderburgh House, Newark's rent control chapter no longer carries an owner-occupied exemption for small buildings at all.
| Jersey City | Newark | |
|---|---|---|
| Rent-cap exemption for buildings of 4 units or fewer | Yes, regardless of owner-occupancy | Owner-occupied carve-out removed from the codified chapter |
| Cap on covered buildings | CPI or 4%, whichever is lower | CPI-U change (15 months to 3 months prior), 4% ceiling |
| Notice for rent increase | Notice required | 30 days' written notice to tenant and Rent Regulation Officer |
Jersey City's version is, at the moment, the more permissive one of the two for an investor who does not plan to live in the building. That is a meaningful reason the four-unit segment here trades the way it does, and it is also exactly the feature that Ordinance 25-125 tried to narrow.
What This Changes About Due Diligence, Not Just Price
The unit count on a listing sheet is not the number that matters. The number that matters is what the certificate of occupancy actually says, and whether every space being marketed as a legal unit was ever permitted as one.
A few things worth confirming before signing anything on a small multi-family here:
- Pull the certificate of occupancy and confirm the unit count matches what is being marketed, not just what is being collected in rent
- Ask whether the seller, or any entity connected to the seller, holds other Jersey City properties that could read as a commonly controlled portfolio if a future version of Ordinance 25-125 comes back
- Check the no-fee Non-Owner Occupied 1-4 Unit Registration with the Office of Landlord/Tenant Relations, even if the building is exempt from the rent cap
- If the building has five or more units, budget for CPI-based increases only, and understand the Rent Leveling Board's process for capital improvement or tax surcharges before assuming those costs pass through automatically
- Confirm liability insurance minimums separately from rent control status. State law sets a $300,000 minimum for an owner-occupied building of four units or fewer and $500,000 for other rental properties, a distinct requirement that has nothing to do with the rent cap but shows up on the same closing checklist
New construction runs on an entirely different track. According to LegalClarity, a building that receives its certificate of occupancy after the ordinance took effect can be exempt from rent control for up to 30 years, or the length of the initial mortgage if that is shorter. That exemption is not automatic. The owner has to file the claim with the municipal construction official before the CO is issued.
FAQ
Does the owner have to live in the building for the four-unit exemption to apply? No. Jersey City's exemption for buildings of four units or fewer applies whether or not the owner occupies a unit, which is a meaningful difference from towns like Newark that have removed that flexibility for non-owner-occupied buildings.
What happens if I convert a fourth unit's basement into a fifth legal unit? The building moves under the rent cap the moment that fifth unit is legally created, and every unit in the building becomes subject to the CPI-based increase limit going forward, not just the new one.
Could the LLC-portfolio structure become illegal in the future? It survived a direct challenge in November 2025, and it survived an earlier challenge tied to the COVID emergency in 2020. Nothing prevents a future council from raising the same question again, so it belongs in a long-hold investor's risk model rather than being treated as settled.
Do I still need to register a building that is exempt from the rent cap? Yes. The city offers a no-fee Non-Owner Occupied 1-4 Unit Registration through the Office of Landlord/Tenant Relations, and that filing exists precisely because exemption from the cap is not the same as exemption from the ordinance.
If you are weighing a four-unit building against a six-unit building in Jersey City, or trying to figure out whether a portfolio structured across separate LLCs still makes sense given where the council landed last November, that is exactly the kind of underwriting conversation worth having before you write an offer. Robert Sanchez works with buyers on both sides of that four-unit line across Jersey City and Hudson County. Let's Connect.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
