This is Part 4 of our series on the 21st Century ROAD to Housing Act. [Part 1 covers the bill overview. Part 2 covers pattern books and BuildReady. Part 3 covers point-access blocks.]
A healthy neighborhood has renters. This needs to be said plainly because the national conversation around Section 901 has collapsed into a binary: ownership good, rental bad. That framing is wrong, and if it drives policy, it will produce worse cities.
A duplex with an owner on one side and a renter on the other is the oldest wealth-building structure in American housing. The owner’s mortgage gets paid down by the tenant’s rent. The tenant gets a home in a neighborhood they chose at a price they can afford today, not a price they have to qualify for at 7.5 percent over 30 years. A triplex held by a local investor who lives three blocks away and answers the phone when the furnace breaks is a civic asset. These are rental buildings. They are also the backbone of every functional urban neighborhood this country ever produced.
The problem Section 901 is trying to address is not rental housing. It is the replacement of an entire housing ecosystem with a single product type controlled by entities with no local stake.
What Section 901 Actually Says
The provision restricts large institutional investors from purchasing single-family homes. “Large institutional investor” means any for-profit entity with investment control of 350 or more single-family homes in aggregate. “Single-family home” includes duplexes.
Exceptions exist for new build-to-rent construction, significant renovation, foreclosure loss-mitigation, and homeownership programs. The constraint: homes purchased under these exceptions must be sold to an individual homeowner within seven years. The current renter gets a right of first refusal and a 30-day first-look period. The clock starts at the initial purchase and does not reset on resale between institutional owners.
The bill does not force liquidation of existing portfolios. It restricts future acquisitions.
Penalties are one million dollars per transaction or three times the purchase price.
Buildings with three or more dwelling units are exempt from both the purchase restriction and the seven-year clock.
The Monoculture Problem
Drive through a purpose-built rental subdivision on the suburban edge of any American metro. Amelia. Lebanon. Maineville. Detached houses. Vinyl siding. Attached garages. It reads like a mortgage-backed neighborhood, except every unit belongs to a single corporate entity. The residents are tenants in a portfolio. The streets are private. The amenities are branded. The architecture is interchangeable with a subdivision in Phoenix or Raleigh because it was designed by the same firm using the same prototype.
This is not a neighborhood. It is a product. And the problem with the product is not that it contains rentals. The problem is that it contains nothing else.
A city is an ecosystem. It needs owner-occupied duplexes and market-rate rental apartments and subsidized affordable units and co-ops and land trust homes and live-work buildings and accessory dwelling units and single-room occupancies and everything in between. It needs buildings owned by families, by small local investors, by nonprofits, by community land trusts. It needs two-story buildings next to four-story buildings next to corner stores. It needs variety in tenure, in scale, in ownership, in architecture.
When a single institutional model replaces that ecosystem across hundreds of lots, the neighborhood becomes brittle. One investment thesis. One maintenance budget. One exit strategy. When the spreadsheet changes, every house on the street changes with it. There is no redundancy. No local owner who stays because they live there. No small landlord whose retirement depends on keeping the building in good shape.
Section 901 is a blunt instrument aimed at this specific monoculture. It is not a housing philosophy. It is a correction.
The Design Problem
When corporate developers build a BTR community of 50 townhomes, they design it like an apartment complex. Shared water mains. Shared sewer taps. Overlapping utility easements. One massive parcel. One owner. The infrastructure is cheaper upfront because it is not designed for individual ownership. The units cannot be legally sold to individual buyers without millions of dollars in retroactive civil engineering – replumbing, remetering, replatting, new easements, new surveys.
This was always an extractive model: infrastructure designed for a corporate balance sheet, not a human neighborhood. Section 901 exposes the structural flaw. If the law requires sale to individuals within seven years, a development designed from the start as a single-parcel rental asset becomes a liability.
The Exemption That Matters
Here is the detail that every middle housing developer should understand: Section 901’s purchase restrictions and the seven-year disposal requirement apply only to single-family homes and duplexes. Buildings with three or more units are explicitly exempt.
If you are building triplexes and fourplexes, Section 901 does not restrict your investors, does not limit your hold period, and does not require disposition to individual buyers. The bill’s entire institutional-investor framework passes over you.
This creates a clear incentive gradient. Two-unit buildings face the seven-year clock. Three- and four-unit buildings do not. For developers weighing building types, the math just tilted toward the missing middle.
Design for Ownership from Day One
The Design Problem Nobody Planned For
When a corporate developer builds 50 rental townhomes on a single parcel, the engineering follows the ownership structure. Shared water mains. Shared sewer taps. Overlapping utility easements. One lot. One meter. One owner.
This is cheaper upfront. It is also a trap.
Section 901 says these homes must be sold to individuals within seven years. But you cannot sell a townhome individually when it shares a water main with the building next door, when the lot lines were never drawn, when there is one electric meter for four units, when the sewer lateral serves a row of eight. Converting this infrastructure to support individual fee-simple ownership costs hundreds of thousands of dollars in civil engineering, survey work, utility installation, and legal platting.
Every BTR community designed as a single-parcel rental asset just became a ticking liability. Seven years to untangle infrastructure that was never meant to be untangled. (The developers who designed it this way saved money on day one. They will spend considerably more on day 2,555.)
The Exemption Worth Understanding
Here is the detail that changes the math for middle housing.
Section 901’s purchase restrictions and the seven-year disposal requirement apply only to single-family homes and duplexes. Buildings with three or more dwelling units are explicitly exempt. No purchase ban. No disposition clock. No forced sale.
If you are building triplexes and fourplexes, Section 901 does not apply to you or your investors.
The federal government just created an incentive gradient. Two-unit buildings face the seven-year clock. Three-unit buildings do not. For any developer weighing building types on an infill lot, the regulatory risk just tilted toward exactly the missing middle housing that Cincinnati needs most.
This is, accidentally or not, good policy.
Design for Ownership from Day One
At Trilobite, Section 901 does not require us to change anything. We never built for the corporate BTR model. We design attached housing and missing-middle projects so they can be community owned from the beginning. Rental units are a great part
What the Correction Misses
The seven-year forced sale assumes that homeownership is always the superior outcome. For many households, it is not. A family that moves every three years for work needs a rental. A 25-year-old with student debt and an unstable income needs a rental. A retiree who sold a house and wants flexibility needs a rental. Affordable rental housing in the neighborhood of your choice is not a consolation prize. It is a right that functional cities protect.
The bill also assumes that individual fee-simple sale is mechanically simple. It is not. Most BTR subdivisions were engineered as single-parcel assets: shared water mains, shared sewer taps, overlapping easements, one meter bank. Converting that infrastructure to support 50 individual deeds costs hundreds of thousands of dollars in civil engineering, surveys, utility work, and legal platting. The developers who built this way saved money on day one. They will spend considerably more unwinding it. (Day 2,555, to be precise.)
The better answer is not forcing bad site plans into good ownership structures after the fact. The better answer is building the right way from the start.
Building-Type Diversity as Policy
The most important detail in Section 901 for middle housing practitioners: buildings with three or more dwelling units are exempt. No purchase restriction. No disposition clock. No forced sale.
This means a triplex, a fourplex, a six-unit point-access block, and a 12-unit apartment building are all completely untouched by Section 901. An institutional investor can own them. A local investor can own them. An owner-occupant can live in one unit and rent the others. A nonprofit can operate them as affordable housing. The full range of ownership structures remains available.
The federal government just drew a bright line. Below three units, institutional ownership is restricted. Above three units, all forms of ownership and tenure are permitted. For cities trying to add housing, the incentive is clear: build a variety of building types, with a variety of unit counts, for a variety of owners and residents.
That is not an accidental outcome. That is what good urbanism looks like.
A street with a duplex, a triplex, two fourplexes, and a corner six-unit building over a coffee shop contains rental units, owner-occupied units, and a mix of building scales that produces the visual variety and economic redundancy a neighborhood needs to absorb shocks. No single owner controls the block. No single investment thesis governs the street. If one building changes hands, the others remain.
That is how Cincinnati’s strongest neighborhoods were originally built. The pattern is not new. It just became illegal for 75 years. And now the federal government is nudging us back toward it.
How We Build
Trilobite Design was never in the corporate BTR business. We design missing-middle housing for neighborhoods, not portfolios. But the distinction that matters is not “rental versus ownership.” It is “extractive versus rooted.”
We design every project so the ownership structure can change without the building needing surgery. Fee-simple lots with independent utility meters and individual deeds. Whether a project starts as rental or for-sale, the architecture supports both paths. A local investor can hold rental units for twenty years and sell them individually when the market is right. An owner-occupant can rent a unit to offset the mortgage. The building does not care. It was designed to accommodate a neighborhood’s full life cycle, not a seven-year hold period.
We design to Passive House standards because both renters and owners deserve low utility bills. A high-performance envelope is not a luxury finish. It is a reduction in operating cost that makes housing affordable to live in, not just affordable to close on.
We design for specific streets in specific neighborhoods because a building that responds to its context becomes part of the neighborhood’s identity. A building designed to be interchangeable across metros is a building designed to be abandoned when the yield drops.
The Unfinished City
Section 901 is not the housing policy I would write. It is too blunt, too focused on one ownership structure, and it risks discouraging the construction of new rental supply at a moment when supply is the primary constraint. Rental housing is not the enemy. Monoculture is.
But the underlying instinct is correct. A city where families can own homes builds different than a city where corporations own neighborhoods. A city with a variety of building types, tenure models, and ownership scales is more resilient than a city dominated by any single model.
Cincinnati was built by small builders constructing two-, three-, and four-unit buildings on 25-foot lots. Each building was a little different. Each owner had a stake. The streets that resulted are the streets we now consider historic, walkable, and desirable. We did not plan that variety. It emerged from thousands of individual decisions made at a small scale.
The federal bill is not going to recreate that pattern. Federal bills never do. But it clears some obstacles, creates some incentives, and signals a direction. The building happens locally. Lot by lot.
That is where we work.uild.