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

One of many interest rate indexes used to determine interest rate adjustments on an adjustable rate mortgage. ...

A mortgage that can be moved from one property to another. Ordinarily, you repay your mortgage when you sell your house and take out a new mortgage on the new home you purchase. With a ...

A home built entirely in a factory, transported to a site, and installed there. Manufactured homes are distinguished from 'modular,' 'panelized'' and 'pre-cut' homes. Manufactured houses ...

The amount the borrower owes at maturity. ...

In general, a Down payment is a one-time payment a buyer makes to diminish the risks of the seller of expensive goods like a car, or a house. In Real Estate, the home buyer makes a down ...

Total costs charged to the borrower that must be paid at closing, by the borrower, the home seller, or the lender. In dealing directly with a lender, settlement costs can be divided into ...

The most recently published value of the index used to adjust the interest rate on an indexed ARM. ...

Owner financing or seller financing is a trending real estate concept among homebuyers and sellers. The seller reveals in their asset’s advertising or listing if buyers can purchase ...

A transaction in which interest is not paid on interest there is no compounding. For example, if you deposit $1,000 in an account that pays 5% a year simple interest, you would receive ...

Popular Mortgage Questions