Department of Numbers

This section of Department of Numbers is no longer being updated and may be removed in the future. The data here is out of date and should no longer be used.

US Home Affordability

The data below quantifies national home affordability by using home prices, household income and rents to calculate price-to-income, price-to-rent and rent-to-mortgage payment ratios.1 The maximum affordable loan amount for the median household income is also calculated.

The ratios below are expressed as either dollar ratios or index ratios. The FHFA and the National Association of Realtors publish median home price values which we can use to calculate a dollar ratio (e.g. median home price to median household income). There are also home price indexes which have longer histories and are more frequently updated that we can use to create an index ratio (e.g. home price index to median household income). The latter series must be expressed as an index.

Home Price-to-Income Ratios

As measured by the latest Realtor quarterly median sales price data and median household income, the price-to-income ratio for the US was 3.76 in March 2014. The FHFA price-to-income dollar ratio is a comparable series and has history back to 2000 as shown in the first chart. The index ratios in the second chart are from monthly data and have a longer history.

Home Price-to-Income Dollar Ratio: FHFA, Realtor

US price-to-income dollar ratio chart

Home Price-to-Income Index Ratio: FHFA, Case-Shiller

US price-to-income index ratio chart

Note: Index ratios set to 100 in January of 2000

Home Price-to-Income Ratio History

(Dollar Ratio)
(Dollar Ratio)
(Index Ratio)
(Index Ratio)
May 2014 127.0 140.0
April 2014 126.6 140.4
March 2014 3.76 126.4 140.3
February 2014 125.6 138.6
January 2014 124.8 137.5
December 2013 3.86 124.4 136.4
November 2013 123.5 135.3
October 2013 123.6 134.1
September 2013 4.06 122.9 132.7
August 2013 122.6 131.4
July 2013 122.1 130.1
June 2013 3.99 121.2 129.2

Home Price-to-Rent Ratios

The Realtor price-to-rent ratio for the US was 20.06 in March 2014. The FHFA price-to-rent series shows a longer history for the ratio in the first chart. These rent ratios are calculated using adjusted median contract rent data from the Census ACS.2 Price-to-rent index ratios are shown in the second chart and use OER as the rent measure.

Home Price-to-Rent Dollar Ratio: FHFA, Realtor

US price-to-rent dollar ratio chart

Home Price-to-Rent Index Ratio: FHFA, Case-Shiller

US price-to-rent index ratio chart

Note: Index ratios set to 100 in January of 2000

Home Price-to-Rent Ratio History

(Dollar Ratio)
(Dollar Ratio)
(Index Ratio)
(Index Ratio)
May 2014 109.2 120.4
April 2014 109.1 121.0
March 2014 20.06 109.2 121.2
February 2014 108.8 120.0
January 2014 108.3 119.2
December 2013 20.61 108.1 118.5
November 2013 107.6 117.9
October 2013 108.0 117.2
September 2013 21.68 107.6 116.2
August 2013 107.5 115.2
July 2013 107.4 114.4
June 2013 21.29 106.8 113.8

Rent-to-Mortgage Payment Ratio

The rent to mortgage ratio is simply the adjusted rent divided by a 100% loan-to-value mortgage payment (i.e. a mortgage with no down payment). A value below 1.0 means that rent is less than the monthly mortgage payment when the loan value is the full price of the home. Unlike the price-to-rent or price-to-income ratios, the rent-to-mortgage payment ratio accounts for the cost of money by incorporating the mortgage payment based on current 30-year fixed rates. As of March 2014, the Realtor rent-to-mortgage payment ratio for the US is 0.84.

Rent-to-Mortgage Payment Dollar Ratio: FHFA, Realtor

US rent-to-mortgage payment dollar ratio chart

Rent-to-Mortgage Payment History

(Dollar Ratio)
(Dollar Ratio)
March 2014 0.84
December 2013 0.80
September 2013 0.76
June 2013 0.81
March 2013 1.00
December 2012 1.02
September 2012 1.00
June 2012 0.98

Inferred Affordable Mortgage

This analysis of affordability backs out the amount a household could borrow given a monthly mortgage payment equal to 30% of the median household income with a 30 year fixed-rate loan. Traditionally, 30% of income is the maximum amount a homeowner could use towards a home loan. You can think of it as a first order estimate of the maximum amount a household could borrow to purchase a home. The values are not adjusted for inflation.

Inferred Affordable Mortgage

Inferred Affordable Mortgage History

Date Inferred Mortgage
May 2014 $261,125
April 2014 $256,509
March 2014 $256,509
February 2014 $257,728
January 2014 $253,798
December 2013 $252,904
November 2013 $258,956
October 2013 $261,125
September 2013 $252,014
August 2013 $252,904
July 2013 $255,601
June 2013 $264,907
May 2013 $282,623

1. More specifically, home prices are from NAR metro prices and the FHFA. The two home price indices are the seasonally adjusted Case-Shiller 20 city composite index and the seasonally adjusted FHFA purchase only index. Median household income is from the Census CPS. Rent is from the Census ACS for dollar ratios and OER for index ratios. Rent and income data for the previous year is carried into the following year for calculations prior to release of new data.

2. The adjusted rent ratio is calculated by adjusting the median contract rent by the ratio of median owner occupied household size to the median renter occupied household size. More on the adjustment process here.