Definition of "Affordability"

Misti  Griffin real estate agent

Written by

Misti Griffinelite badge icon

Fortress Real Estate Associates LLC

The definition of affordability in real estate is simply a buyer’s capacity to afford a house. Affordability is usually expressed in terms of the maximum amount a buyer will be able to pay for a house, and subsequently be approved for a loan in order to pay this amount. In real estate, this is known as the maximum affordable sale price, and it can be empirically calculated with relative ease. 

To calculate the maximum affordable sales price, you’ll need to take into account three different metrics by which the maximum affordable sales price is calculated. These are the income rule, the debt rule and the cash rule. After calculating each of these numbers, affordability will be the lowest of the three. Let’s take a closer look at each of these rules in turn, and see exactly how they come into play in calculating the maximum affordable sales price. 

The Income Rule in Affordability

This rule states that a borrower's monthly housing expense (MHE), which is the sum of the mortgage payment, property taxes and homeowner insurance premium, cannot exceed a percentage of the borrower's income specified by the lender. Once you’ve calculated a buyer’s MHE, you have their maximum affordable sales price according to the income rule. 

The Debt Rule in Affordability

The debt rule says that the borrower's total housing expense (THE), which is the sum of the MHE plus monthly payments on existing debt, cannot exceed a percentage of the borrower's income specified by the lender. Once calculated, this number is often lower than the number that you might arrive at using the income rule, making it essential for calculating the maximum affordable sales price. 

The cash rule in Affordability

The required cash rule says that the borrower must have cash sufficient to meet the down payment requirement plus other settlement costs. When the cash rule sets the limit on the maximum sale price, the borrower is said to be cash constrained. This number can be raised by lowering the down payment.

image of a real estate dictionary page

Have a question or comment?

We're here to help.

*** Your email address will remain confidential.
 

 

Popular Mortgage Terms

The monthly mortgage payment which, if maintained unchanged through the remaining life of the loan at the then-existing interest rate, will pay off the loan at term. ...

The frequency of rate adjustments on an ARM after the initial rate period is over. The rate adjustment period is sometimes but not always the same as the initial rate period. As an example, ...

The payment of principal and interest made by the borrower. ...

When a borrower has difficulty making the scheduled payment. Position of the Lender: A good place to start is by understanding the position of the lender. A game plan for survival ...

A documentation option where the applicant's income is disclosed and verified but not used in qualifying the borrower. The conventional maximum ratios of expense to income are not ...

The sum of all interest payments to date or over the life of the loan. This is not a good measure of the cost of credit to the borrower because it does not include upfront cash payments and ...

A loan with no down payment. ...

The option to convert an ARM to an FRM at some point during its life. ...

Fees collected by a loan officer from a borrower that are lower than the target fees specified by the lender or mortgage broker who employs the loan officer. An underage is the opposite ...

Popular Mortgage Questions