Indianapolis multifamily investment guide

We have now documented property tax treatment in enough states to say something that we did not expect when we started. The threshold that matters to a multifamily owner is frequently two units, and which side of it you want to be on depends entirely on the state.

In Tennessee, a property with two or more rental units is defined out of the residential class and into "industrial and commercial property," which raises the assessment ratio from 25 percent of appraised value to 40 percent. Crossing into a duplex costs you a 60 percent larger assessment base.

Indiana uses the same count and runs it the other way. Under the property tax caps, the Department of Local Government Finance sets out that a property owner is entitled to a credit for tax above "1% of Homestead Property; 2% of Residential Property; 2% of Long-Term Care Property; 2% of Agricultural Land; 3% of Nonresidential Property; and 3% of Personal Property."

The whole question for an apartment owner is which bucket a rental building falls into, and this is precisely the kind of definition we have learned not to assume. The Department resolves it explicitly. "Residential Property is property that is predominantly used for a residential purpose including: (1) A single-family dwelling that is not part of a homestead. (2) A building that includes two (2) or more dwelling units. (3) Any common areas shared by the dwelling units. (4) Land (even if more than 1 acre)." Nonresidential Real Property is then defined by exclusion, as real property that is not a homestead, residential real property, long-term care property or agricultural land.

So a conventional apartment building is capped at 2 percent of gross assessed value, not the 3 percent that applies to commercial property. And the definition of common areas is generous in a way that matters on a garden-style asset: for a building with two or more dwelling units it takes in "all roads, swimming pools, tennis courts, basketball courts, playgrounds, carports, garages, other parking areas, gazebos, decks, and patios," together with the land used in connection with the building "including land that is outside the footprint of the building." Your amenity deck and your parking are inside the 2 percent cap, not outside it. The definition expressly excludes a commercial hotel, motel, inn, tourist camp or tourist cabin.

Then the part that makes this structurally different from a favorable statute. These caps are in the Indiana Constitution, at Article 10, Section 1. The General Assembly passed Senate Joint Resolution 1 in 2008, a separately elected General Assembly passed it again in 2010, and Indiana voters ratified it in November 2010. A legislature cannot quietly amend this the way it can amend an assessment ratio.³

Two caveats belong in any model. The caps limit tax as a share of gross assessed value; they do not freeze the assessment itself, and the Department is explicit that "a property’s assessed value must still reflect the market value-in-use of that property" and is adjusted annually. And the caps are not absolute: in most counties the exemptions from them are for capital projects or additional school operating and public safety funds "approved by voters in a public referendum." Referendum debt can push a bill above the cap, so the ballot history of the taxing district is worth pulling.

• A building with two or more dwelling units is Residential Property, capped at 2 percent.
• Nonresidential property is capped at 3 percent, defined by exclusion.
• Common areas including parking, pools and playgrounds sit inside the 2 percent cap.
• The caps are in the state constitution, ratified by voters in November 2010.
• Voter-approved referendum levies are the main exception, so check the ballot history.

Tennessee penalizes you at the second rental unit. Indiana protects you at the second dwelling unit, and writes the protection into its constitution. Same threshold, opposite direction.

Most metros in this series are reasonably coherent. This one is not, and treating it as a single market will produce a wrong answer whichever half you are actually buying in.

Marion County, which contains Indianapolis, holds 992,196 people, up just 1.5 percent since April 2020. Hamilton County, immediately north and containing Carmel, Fishers and Noblesville, holds 387,036 and is up 11.4 percent. That is one of the strongest county growth rates in our coverage sitting directly against one of the weakest.²

The building data diverges further. Marion authorized 1,342 residential permits in 2025 against 446,532 housing units, about 0.30 percent of stock. Hamilton authorized 4,146 against 158,835 units, about 2.61 percent. Hamilton County has roughly a third of Marion’s housing stock and permitted more than three times as many homes, a rate close to nine times higher.²

The household economics are two different countries. Marion median household income is $66,346 against Hamilton’s $121,530, about 83 percent higher. Poverty runs 15.8 percent in Marion and 4.7 percent in Hamilton. Adults holding a bachelor’s degree or higher: 34.8 percent in Marion, 61.9 percent in Hamilton. Owner-occupancy is 56.5 percent in Marion and 76.1 percent in Hamilton, so the renter pool is 43.5 percent of households in one and 23.9 percent in the other.²

For a rental investor neither half is straightforwardly attractive, and they fail in opposite ways. Marion has the renter base, the affordability and almost no new supply, in a county whose population is barely growing inside a metro that is losing jobs. Hamilton has the growth, the incomes and the household formation, and is delivering supply at 2.61 percent of stock into a county where three quarters of households already own.¹²

A note on nomenclature, because we have written about a different one. This Hamilton County is in Indiana. The Hamilton County in our Chattanooga guide is in Tennessee, and the two are unrelated.

• Marion population up 1.5 percent, Hamilton County, Indiana up 11.4 percent.²
• Marion permitted 0.30 percent of stock, Hamilton 2.61 percent.²
• Marion median income $66,346, Hamilton $121,530.²
• Marion is 43.5 percent renters, Hamilton 23.9 percent.²

Marion has the renter base and no growth. Hamilton has the growth and few renters. Underwriting the metro as one market gets both wrong.

We are not buying here. We want to be clear that this is a judgment about the employment data rather than about Indiana, because the tax treatment is the best structural protection we have documented anywhere in this series and it would materially improve the expense line on any asset we owned. A constitutional cap on the most volatile expense in multifamily is worth a great deal. It is not worth enough to underwrite rent growth in a metro that lost 1.2 percent of its jobs with nine of eleven sectors contracting, where a household can buy at 3.4 times income and renting saves them $300 a month. Our method is set out in how we evaluate a market, and the full ranked list is on the markets index.¹²

• Which county is the parcel in, and has the business plan been underwritten to that county rather than to the metro?
• What referendum levies has this taxing district approved, since those are the main exception to the caps?
• What is the current gross assessed value, and when was it last adjusted to market value-in-use?
• Does the model correctly apply the 2 percent residential cap rather than the 3 percent nonresidential cap?
• Are the common areas, parking and land outside the building footprint being treated as inside the cap?
• What is Indiana’s rent regulation position, confirmed by counsel? We did not establish it from a primary source for this guide and we do not assert it.
• What rent growth is assumed against falling payrolls and a $300 monthly gap to ownership?¹²
• What share of the projected return comes from operations rather than the exit?

A constitutional cap on your most volatile expense is worth a lot. It is not worth enough to buy into a metro that is shedding jobs across nine of eleven sectors.