Housing 101: Decoding Affordable Housing What Do “Big A” and “Little a” Really Mean?

When you hear the term “affordable housing,” what comes to mind? For many, it conjures an image of government complexes. For others, it simply means finding a place that doesn’t eat up an entire paycheck. For the North Lake Tahoe Truckee community ‘affordable’ has two meanings and understanding the difference between ‘Big A’ and ‘little a’ housing can inform innovative housing ideas and solution.

The Housing Breakdown: “Big A” vs. “little a”

Housing experts divide affordability into two distinct buckets:

• “Big A” Affordable Housing (subsidized): This housing is built or preserved using government subsidies, tax credits, and other financial incentives. Because public funds are involved, the units are regulated and reserved for households that qualify based on their income. How low income limits go depends on the program funding the unit.
• “Little a” affordable housing: This is housing that’s attainable because of how it’s built — its smaller size, efficient construction, or modest design — not because of a subsidy. Often called “affordable by design” (think studios, micro-units, accessory dwelling units, and small cottages), these homes usually carry no income qualification; they’re affordable on the open market because they were built and priced to be.

Not all “little a” housing is built that way on purpose, though. A large share is naturally occurring affordable housing (NOAH) — older, unsubsidized homes that rent for less simply because of their age and condition. It’s market-rate like other “little a” housing, but affordable by circumstance rather than by design.

How “Big A” Eligibility Is Measured: Understanding AMI

In California, the income parameters for “Big A” housing are set using AMI — Area Median Income.

Each year the U.S. Department of Housing and Urban Development (HUD) estimates the median family income for every region, and the California Department of Housing and Community Development (HCD) publishes the official state limits built from it, adjusted for household size. HCD sorts those limits into six income bands. In order, lowest to highest:

• Acutely Low: up to 15% of AMI
• Extremely Low: 16–30% of AMI
• Very Low: 31–50% of AMI
• Low: 51–80% of AMI
• Median: 81–100% of AMI
• Moderate: 101–120% of AMI

There’s no single income cutoff for “Big A” housing because eligibility depends on the program. The most common tool, federal Low-Income Housing Tax Credits, typically serves households up to 60% of AMI (and up to 80% with “income averaging”). But deed-restricted workforce housing, especially in resort regions like ours, often serves households between 80% and 120% of AMI and sometimes higher.

The Latest Local Updates: What Changed in 2026?

HCD released the official 2026 income limits, and the local numbers moved unevenly compared to the year before:

• Placer & El Dorado Counties: a modest, steady increase.
• Nevada County: a much larger jump — roughly 12.7% — in its median income figure.

Why the difference? AMI is an income estimate that HUD rebuilds each year from updated census data, so a jump like in Nevada County could come from several directions. Local incomes may have genuinely risen. The mix of residents may have shifted if lower-income households get priced out and move away. The median climbs even when no individual earns more. Or, since these are survey-based estimates, a smaller county’s figure can swing from year to year as the data refreshes. It could be any of these, or a combination.

The Bottom Line: Moving the Needle in Tahoe-Truckee

Affordability isn’t one-size-fits-all. Tracking these AMI shifts matters, because they’re the lines that decide who qualifies for subsidized “Big A” housing. But here’s the hopeful part: not every solution depends on that system.

“Big A” housing takes public capital, tax credits, income-qualified waitlists, and years to assemble. “little a,” affordable-by-design housing doesn’t. A homeowner can add an accessory dwelling unit and rent it to a local worker, attainable housing produced without a single tax-credit deal. That’s exactly what the Tahoe Housing Hub’s ADU Accelerator helps people do, alongside our work advocating for the codes and policies that let more of this housing get built. It’s how we move the needle now, while the bigger pieces come together.

To explore the data behind our local housing need and see exactly what kinds of housing our community is missing read the 2025 Tahoe-Truckee Regional Housing Needs Assessment.

2026 State Income Limits – Area Median Income (AMI) per Number of Persons in Household

Number of Persons in Household	1	2	3	4	5	6	7	8
Adjustment Factor	70%	80%	90%	Base	108%	116%	124%	132%

Nevada County Area Median Income: $140,400

Income Category	1	2	3	4	5	6	7	8
Acutely Low	14,750	16,850	18,950	21,050	22,750	24,400	26,100	27,800
Extremely Low	26,300	30,050	33,800	37,550	40,600	44,360	50,040	55,720
Very Low Income	43,800	50,050	56,300	62,550	67,550	72,600	77,600	82,600
Low Income	70,050	80,050	90,050	100,100	108,100	116,150	124,100	132,150
Median Income	98,300	112,300	126,350	140,400	151,650	162,850	174,100	185,350
Moderate Income	117,950	134,800	151,650	168,500	182,000	195,450	208,950	222,400

Placer County Area Median Income: $124,000

Income Category	1	2	3	4	5	6	7	8
Acutely Low	13,000	14,900	16,750	18,600	20,100	21,600	23,050	24,550
Extremely Low	27,600	31,550	35,500	39,400	42,600	45,750	50,040	55,720
Very Low Income	46,000	52,600	59,150	65,700	71,000	76,250	81,500	86,750
Low Income	73,600	84,100	94,600	105,100	113,550	121,950	130,350	138,750
Median Income	86,800	99,200	111,600	124,000	133,900	143,850	153,750	163,700
Moderate Income	104,150	119,050	133,900	148,800	160,700	172,600	184,500	196,400

El Dorado County Area Median Income: $124,000

Income Category	1	2	3	4	5	6	7	8
Acutely Low	13,000	14,900	16,750	18,600	20,100	21,600	23,050	24,550
Extremely Low	27,600	31,550	35,500	39,400	42,600	45,750	50,040	55,720
Very Low Income	46,000	52,600	59,150	65,700	71,000	76,250	81,500	86,750
Low Income	73,600	84,100	94,600	105,100	113,550	121,950	130,350	138,750
Median Income	86,800	99,200	111,600	124,000	133,900	143,850	153,750	163,700
Moderate Income	104,150	119,050	133,900	148,800	160,700	172,600	184,500	196,400