Post 3 of 7, Behind the Build

'Affordable' Doesn't Mean What You Think It Means

"Affordable housing" gets used constantly and defined almost never. It shows up at city council meetings, in news stories about rent, in your friend's Instagram story about their lease renewal — and it means something slightly different depending on who's saying it. There's an actual definition. Here it is, along with the two questions people usually really want answered: what counts as affordable and to whom.

What actually counts as "affordable"

A household's housing is "affordable" if it spends no more than 30% of its gross income on it. Rent plus utilities, or a mortgage plus taxes and insurance. That's the whole rule. Nothing about the finishes, the neighborhood, or whether a government agency touched the deal at any point. Just income versus cost.

Go past 30% and you're "cost-burdened," a real term researchers use. Past 50% and you're "severely cost-burdened" — the point where rent starts eating into groceries and gas money. This technically applies at any income level, but the conversation focuses on lower incomes because that's where the trade-offs actually hurt.

The catch is that 30% of income means wildly different dollar amounts depending on what someone earns, which is why "affordable" always needs a second number attached to it: affordable to whom.

Affordable to whom

"Whom" is commonly measured using something called Area Median Income, or AMI — the exact midpoint of household earnings for a given county, recalculated annually and adjusted for household size. The percentage of AMI is really a stand-in for a type of household based on income.

Say a county's AMI for a household of four is $90,000. Broadly, that breaks down like this:

• Around 30–50% AMI ($27,000–$45,000): Very Low Income
• Around 50–60% AMI ($45,000–$54,000): Low Income
• Around 60%–120% AMI ($54,000–$108,000): Moderate Income
• Over 120% AMI ($108,000+): Above Moderate Income

The first two groups are generally served by what's called low-income housing, where the government helps cover the gap between what a household can pay and what it costs to build and operate the unit — sometimes through tax credits that lower a developer's costs, sometimes through vouchers that supplement a tenant's rent directly. The third group is served by workforce housing, aimed at people who earn too much to qualify for those low-income programs but still can't easily absorb a new market-rate lease. The fourth group is served by market-rate housing.

"That's not affordable, that's expensive"

This is the most common reaction to any of this, and it's a fair one. Here's the disconnect: "affordable housing" is a program category, not a promise about what feels cheap to you personally.

Take that same $90,000 AMI example. A unit capped at 80% of AMI in that county might rent for somewhere around $1,800 a month for a two-bedroom. To someone earning $40,000 a year, that number is completely out of reach — it'd eat nearly 55% of their income. But to the household the unit is actually built for, one earning around $72,000, that same $1,800 lands right at 30% of income. Same apartment, same rent, two very different verdicts depending on whose paycheck you're comparing it to.

That's the part that gets lost. "Affordable" was never a claim that the rent is low in absolute terms — it's a claim that the rent is affordable to a specific income band.

The affordability problem

The truth is that housing costs have climbed faster than wages in recent years, and housing has become less "affordable" for a larger number of households. Two main factors are driving this dilemma: an overall shortage of housing stock, and increased construction costs and interest rates.

The solution to the shortage alone seems simple — build more housing. That's the goal of housing developers. But developers run into the second problem. With increased construction costs and interest rates, the rents that new construction would need to charge often aren't "affordable" for a large enough share of the area's population. This is what developers mean when a project is "feasible" (the required rents align with the market) or "infeasible" (the required rents are too high for the market). When a project is infeasible, new housing doesn't get delivered — and that pushes housing costs up further, since demand keeps outpacing supply. Developers are facing their own version of the affordability problem, trying to deliver new product to a market that often can't support what it costs to build.

Recognizing this, the government has stepped in to help fill the gap. Historically, that's meant low-income housing programs targeting Very Low Income and Low Income households. As housing costs have climbed, the cost burden has become more common for Moderate Income households too. Wisconsin has responded with newer tools aimed at that group — including a state-backed, low-interest loan program that helps developers convert empty commercial buildings into workforce housing.

The overall goal across all of these programs is the same: foster housing options that are "affordable" to households at every income level.

Why it's worth knowing the difference

A unit aimed at 60% of AMI and a unit aimed at 100% of AMI can both get labeled "affordable housing" in the same article, but they serve different renters at different price points. Neither is more affordable in some general sense — they're just serving different rungs on the income ladder.

So next time the phrase comes up, the useful question isn't whether something is affordable. It's affordable to whom, and at what income level.

Three Sixty Real Estate Solutions is the developer of Copper Rocks. This series is educational; nothing here is legal advice.