The purpose of this appendix is to explain the methodology used to measure homeownership affordability in this report. The approach taken is the same for each of the three years for which data are presented (1984, 1988, and 1991). Although the basic methodology is the same, changes in interest rates, fees and charges, and Federal National Mortgage Association (FNMA) and Federal Housing Administration (FHA) regulations did occur between the three survey years, and do affect the affordability calculations. These changes are noted below.
In addition, there are two significant differences in the methodology used in this report and the one used in an earlier Who Can Afford to Buy a House? report. Those two differences and their effects are also discussed below.
Criteria for measuring affordability. In this report, two primary approaches are used to provide a measure of homeownership affordability:
Primary variables used in affordability calculations. The following key variables are used to calculate homeownership affordability:
Also excluded is income from rental property and income from interest or dividends from regular passbook savings accounts in a bank, savings and loan, or credit union; money market deposit accounts; certificates of deposit or other savings certificates; interest-earning checking accounts; money market funds; U.S. government securities; municipal or corporate bonds; stocks or mutual funds; and other interest- earning assets. Income from these sources is not included because the assets generating this income can be sold to provide cash to increase the initial downpayment to purchase the home.
Real estate taxes. Real estate taxes are estimated for each region based on data from the American Housing Survey (AHS). The following were used for each region for each year:
Tax Per $1,000 Value
1991 1988 1984
Northeast $13 $13 $16
Midwest $14 $14 $14
South $ 8 $ 7 $ 7
West $ 8 $ 8 $ 7
Property insurance. Property insurance is estimated at $3 per $1,000 value for homes in all areas in each year based on guidelines set forth in the "Guide to Residential Financing".
Closing costs. Closing costs include costs for transfer taxes, title fees, and appraisal fees; and prepayment items such as real estate taxes and property insurance. Although they can vary from area to area, for conventional loans in this report they are estimated to be 3 percent of the total value of the property based on guidelines in the "Guide to Residential Financing". For conventional fixed rate mortgages these fees must be paid "up-front" and they cannot be financed. For FHA-insured loans, the administrative part of the closing costs (transfer taxes, title fees, etc.), as well as the loan origination fee can be financed (based on Department of Housing and Urban Development studies, the administrative closing costs are estimated to be 1.2 percent of the purchase price of the home).
Fees and charges. Fees and charges include all fees, commissions, discounts, and "points" paid by the borrower or seller in order to obtain a loan. They exclude charges for mortgage credit, life or property insurance, transfer taxes, and title fees. Fees and charges were estimated for conventional loans based on data for conventional loans closed during the survey period, determined from the FHFB's MIRS. This estimate produced fees and charges of 1.62 percent of the mortgage amount in 1991, 1.98 percent in 1988, and 2.58 percent in 1984. For FHA-insured loans, fees and charges were estimated from HUD's report on Average Prices for FHA-Insured Home Mortgages (Section 203). They were estimated at 1.63 percent of the mortgage amount in 1991, 2.00 in 1988, and 2.90 in 1984. For FHA-insured loans, the discount part of the fees and charges must be paid "up-front". The remaining part - the loan origination fee - can be financed.
Down payment. The down payment is the cash portion of the price of the house that the buyer must pay from his/her own funds. The minimum down payment needed for conventional loans is 5 percent of the purchase price of the home and the amount cannot be financed.
For FHA-insured loans, the administrative part of the closing costs and the loan origination fee are added to the purchase price of the home to derive "total acquisition costs". The homebuyer is required to pay 3 percent of the first $25,000 of the total acquisition costs and 5 percent of the amount over $25,000.
Assets. Assets include all cash available in savings accounts, money market deposit accounts, certificate of deposits, money market funds, government securities, bonds, checking accounts and the net value of stock and mutual funds. The net value of stock is the gross asset value of the stock portfolio minus the amount borrowed on stocks in a margin account.
Assets also include the net equity available, after selling costs and discounts are subtracted, in rental income property owned, non-rental income property owned, debt owed from businesses owned, and mortgages owned; as well as the equity available in any currently owned home. The following discounts were applied:
Debts. Debt is the amount owed on credit cards, automobile loans, bank loans, outstanding home mortgages, and all other loans.
Total allowable debt. Under Federal National Mortgage Association (FNMA) guidelines for a conventional loan, total allowable debt for a family or unrelated individual is 8 percent of "available" monthly family income for consumer debt and 28 percent for mortgage debt. For an FHA-insured loan the total allowable debt is 41 percent for consumer and mortgage debt, with a maximum of 29 percent allowed for mortgage debt.
Total monthly payment on outstanding debts. Monthly debt payments are estimated at 3 percent of total outstanding debt (2 percent principal, 1 percent interest), a typical minimum payment required of consumers.
Excess debt. A family or unrelated individual has excess debt if the monthly payment on outstanding debts is greater than the total allowable debt. This excess debt must be paid down to the total allowable debt level using available cash in order to qualify for a mortgage.
Calculation to determine affordability level versus criterion home in area. There are two principal determinants of whether a family or unrelated individual can afford a criterion home: (1) does it have the necessary cash available to pay the minimum down payment, closing costs, excess debt, if any, and fees and charges associated with purchasing the home; and (2) after all available cash has been exhausted, does it have the necessary income needed to make the required monthly mortgage payments. If the answer to either question is "no", then they cannot afford the criterion home.
Conventional loans. The following specific steps go into the calculation of homeownership affordability for each family or unrelated individual for conventional loans:
FHA-insured loans. The specific steps involved in the calculation of affordability for FHA-insured loans are identical to those for conventional loans except for the following:
Calculation of the maximum-priced home a family or unrelated individual can afford. The maximum-priced home that a family or unrelated individual can afford was calculated using the following steps for both conventional and FHA-insured loans:
Comparability with earlier report. There are two significant changes in the methodology used to determine homeownership affordability in this report compared to an earlier Who Can Afford to Buy a House? report published in June 1991.
Income. In the earlier report, only income data from the last month of the 4-month reference period were used. These data were converted to annual income by multiplying by 12. In this report, income data for all three survey years are based on information collected during the entire 4-month reference period and converted to annual income by multiplying by 3. The purpose of this change is to minimize the effect of wide monthly fluctuations in income, and to reduce the number of families and unrelated individuals with no income or an income loss. "Available" money family income for 1988, using both methods is shown below.
Income (in 000's) Based on 1-Month Based on 4-Months Total families and unrelated individuals 100,593 100,593 No income or loss 7,874 6,404 $1 to $4,999 6,564 7,315 $5,000 to $9,999 13,309 13,651 $10,000 to $14,999 13,144 13,026 $15,000 to $19,999 11,598 11,993 $20,000 to $24,999 10,103 9,747 $25,000 to $29,999 7,418 7,643 $30,000 to $34,999 6,699 6,717 $35,000 to $39,999 5,695 5,911 $40,000 to $44,999 3,867 4,128 $45,000 to $49,999 3,604 3,472 $50,000 to $59,999 4,047 4,127 $60,000 or more 6,672 6,457 Median $19,000 $19,100
In this report, the United States is divided into 27 areas and the value of several criterion homes - median-priced, modestly priced, low-priced, and price adjusted - are determined for each of the 27 areas (the values for two criterion homes - new single-family and condominium - are determined within census division and region, respectively). Each family's affordability status is determined based on which of the 27 areas they live in, and if they can qualify to purchase the criterion home in that area. Using the earlier example, the affordability status of the family living in rural Wyoming would be based on the median-priced home outside metropolitan areas in the Mountain Division ($58,000), while for the family in Marin County, California it would be based on the median-priced home in the suburbs in the Pacific Division ($127,000).
The effect of these two methodological changes on the affordability status of families and unrelated individuals using a conventional fixed-rate 30-year mortgage is shown in Table C-1 below (the effects are similar for FHA-insured mortgages). The table shows the effect of the income change only and the cumulative effect of both changes. In all cases the differences between the original methodology and the new methodology are not statisitically significant.
Table C-1. Effects of Methodological Changes on Affordability
Status: 1988
Cannot afford median-priced home 1/
Original With change With all
methodology in income methological
only changes
Using conventional fixed-rate,
30-year financing
TOTAL
Families and unrelated
individuals...................... 56.6 56.5 57.3
Families........................ 47.9 47.8 48.6
Married couple................ 39.3 39.1 39.7
Male householder.............. 66.5 66.1 68.8
Female householder............ 79.5 79.5 80.8
Unrelated individuals........... 74.6 74.8 75.5
CURRENT OWNERS
Families and unrelated
individuals...................... 36.0 35.9 37.1
Families........................ 30.9 30.8 31.8
Married couple................ 25.5 25.4 26.1
Male householder.............. 49.9 49.3 54.3
Female householder............ 61.0 61.0 62.9
Unrelated individuals........... 53.0 53.2 54.9
CURRENT RENTERS
Families and unrelated
individuals...................... 91.0 90.9 91.1
Families........................ 90.4 90.1 90.5
Married couple................ 86.5 86.0 86.4
Male householder.............. 93.0 93.1 92.1
Female householder............ 97.2 97.2 97.9
Unrelated individuals........... 91.6 91.7 91.8
1/ Differences are not statistically significant