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 assumption that the index value to which the interest rate on an ARM is tied follows the same pattern as in some prior historical period. In meeting their disclosure obligations in ...

An agreement between a mortgage borrower in distress and the lender that allows the borrower to sell the house and remit the proceeds to the lender. A short sale is an alternative to ...

Fees assessed by lenders when payments are late. Late fees are usually 4% or 5% of the payment. A borrower with a 6% mortgage for 30 years who pays a 5% late charge every month raises his ...

A mortgage loan transaction in which the lender assumes responsibility for an existing mortgage. A wrap-around can be attractive to home sellers because they may be able to sell their ...

A mortgage on which the borrower gives up a share in future price appreciation in exchange for a lower interest rate and/or interest deferral. SAM's in the private market had a brief ...

A fee that some lenders charge to accept an application. It may or may not cover other costs such as a property appraisal or credit report, and it may or may not be refundable if the lender ...

The amount the borrower promises to repay, as set forth in the loan contract. The loan amount may exceed the original amount requested by the borrower if he or she elects to include ...

The definition of an assumable mortgage is what happens when a buyer assumes or takes over a mortgage that the seller contracted. This is a type of financial arrangement that passes an ...

A reduction in the mortgage payment made by a homebuyer in the early years of the loan in exchange for an upfront cash deposit provided by the buyer, the seller, or both. How Temporary ...

Popular Mortgage Questions