How FHFA Calculates the Annual Adjustment
Each year, FHFA compares the national average home price from the third quarter of the current year to the third quarter of the prior year using the FHFA House Price Index, which tracks purchase prices on properties with conforming mortgages. The percentage change in the index determines the percentage adjustment to the baseline conforming limit. If the HPI shows a 5.2% increase in average home prices, the baseline limit increases by 5.2% (rounded to the nearest $50 increment ). Because the limit is tied to a national average, it does not directly reflect local market conditions — individual counties may experience price changes very different from the national average. The high-cost area mechanism addresses this by allowing county-specific limits above the baseline where local median values warrant it. FHFA publishes the new limits in late November of each year, and the updated limits take effect on January 1 of the following year for loans with application dates on or after that date.
How High-Cost Area Limits Are Determined
For counties in designated high-cost areas, FHFA calculates the local loan limit as 115% of the county’s median home value, capped at 150% of the baseline national limit. This means a county with a median home value of $750,000 would have a calculated limit of $862,500 (115% of $750,000), which falls below the 2025 ceiling of $1,209,750 and would become the county’s specific limit . A county with a median home value of $1,200,000 would have a calculated limit of $1,380,000, but because this exceeds the ceiling, the county limit is capped at $1,209,750. Alaska, Hawaii, Guam, and the U.S. Virgin Islands receive special treatment and may have limits set at the ceiling regardless of local median values . The list of high-cost counties and their specific limits is published by FHFA alongside the baseline announcement.
How FHA Floor and Ceiling Limits Work
FHA’s floor-and-ceiling structure ensures a minimum loan limit in every county regardless of local home prices. The floor is set at 65% of the conforming baseline limit. In 2025, this means the minimum FHA limit for any county is $524,225 (65% of $806,500) . In counties where median home values support a higher limit, FHA calculates the limit using a similar methodology to FHFA’s conforming calculation. The FHA ceiling matches the conforming high-cost ceiling at $1,209,750 . This floor-ceiling structure means FHA limits are always at or below the corresponding conforming limit for a given county, which can make conventional loans a better fit for borrowers needing loan amounts above the FHA limit but below the conforming limit.
How VA Entitlement and County Limits Interact for Partial Entitlement
For VA borrowers with full entitlement, there is no loan limit and no interaction with county limits. For borrowers with partial entitlement, the VA county limit (which mirrors the conforming limit) determines the maximum guaranty. The VA guarantees 25% of the county limit. If a veteran has remaining entitlement of $100,000 and the county limit is $806,500, the maximum guaranty is 25% of $806,500, or $201,625. Since the veteran has only $100,000 of entitlement remaining, the VA can guarantee up to $100,000. Lenders typically require VA borrowers to have guaranty coverage equal to 25% of the loan amount; if the remaining entitlement does not provide this coverage, the veteran must make a down payment to cover the shortfall. The calculation is: Down payment = 25% of (loan amount minus the VA guaranty coverage available). This calculation can result in modest or significant down payment requirements depending on the gap between the veteran’s remaining entitlement and the desired loan amount.
Multi-Unit Property Limits
Conforming and FHA loan limits increase for properties with two, three, or four units, reflecting the higher purchase prices typical of multi-unit residential buildings. The 2025 conforming limits for multi-unit properties at the baseline level are approximately: $1,032,650 for two units, $1,248,150 for three units, and $1,551,250 for four units . High-cost area limits for multi-unit properties are calculated using the same 150% ceiling methodology. Borrowers purchasing a duplex, triplex, or fourplex as an owner-occupied primary residence can access these higher limits, which is a significant advantage for house-hackers and small-scale real estate investors who occupy one unit while renting the others.
Related topics include conventional loans explained, usda loans explained, jumbo loans explained, down payment requirements by loan type, and pmi and mortgage insurance explained.