Trends: Methodology

To help you make informed decisions when buying or selling a home, we show five kinds of data about what's going on in the real estate market at the neighborhood, zip-code, city and county level.

• Interactive Graph
• Listing Data
• Sold Data
• Price Reduction Graph
• Price Reduction Data

Unless otherwise specified, we calculate these values using moving windows that present the metrics based on the 90-day period ending on the given date shown on the graph. We also show the median The center value of an ordered set of data. When looking at a neighborhood's home prices, the median price is usually the best reflection of a typical price since it won't be affected by a few very expensive or cheap homes in the sample. ratio as opposed to the ratio of two medians. The median ratio best represents current market pricing trends since it captures the association of each home's individual listing or sold price per square foot The list or the sale price of the home divided by the number of square feet. in the final value.

Our graph is updated once a week and each point represents one week's worth of data. You can view single family homes, condos or both and see the following five metrics:

• Listing $/Sq. Ft. : the median The center value of an ordered set of data. When looking at a neighborhood's home prices, the median price is usually the best reflection of a typical price since it won't be affected by a few very expensive or cheap homes in the sample. value of the listing price per square foot The list or the sale price of the home divided by the number of square feet. for homes that were active on the market in the week ending on the date shown on the graph. This is the median of each home's ratio of listing price to square feet, not the ratio of two medians.
• Sold $/Sq. Ft. : this is the 90-day moving median value of the sold price to square footage. We calculate the median value by taking the ratio of each home's sold price to square feet, and then take the median value of that set.

Learn more about how to evaluate $/Sq. Ft. in your home search.

• Sale-to-List % : the moving mean value of the ratio of the final sale price to the list price for homes sold in the previous 90 days. Learn more about how to evaluate sale-to-list percentages The final sale price (what a buyer pays for the home) divided by the last list price expressed as a percentage. in your home search.
• # For Sale: the number of homes that were for sale in the week ending on the date shown on the graph.
• # Sold: the 90-day moving count of the number of homes sold.

It's common for the $/Sq. Ft. The list or the sale price of the home divided by the number of square feet. for listings to be lower than the $/Sq. Ft. for homes sold, but still have a sale-to-list % less than 100%. For example, the Listing $/Sq. Ft. might be $141/sf, the Sold $/Sq. Ft. might be $148/sf, and the Sale-to-list % might be 98.6%. In this case, homes are selling for less than list price, but few inexpensive listings are selling, while a bunch of expensive listings are. As a result, the average Averages are calculated by adding together each number in a set and dividing by the total number of values. list price is lower than the average selling price, but the $/Sq. Ft. is higher for homes sold than for active listings.

We display a number of metrics about homes on the market during the given time period. We update the listing data once a month during the first week.

Here's how we calculate the statistics about what's on the market broken out by the time period and home type:

• # Homes for Sale : the number of homes that were for sale at the end of the given time period in the table.
• # Homes for Sale: For-Sale-By-Owner : the number of homes that were For-Sale-By-Owner (FSBO) A home the owner is selling himself without the services of a licensed real estate agent. at the end of the given period in the table.
• # Homes for Sale: MLS-Listed Foreclosures : the number of MLS-listed foreclosed homes for sale at the end of the given period in the table
• Median List Price : the median asking price for homes for sale in the given time period in the table.
• Median List $/Sq. Ft. : the median of the ratio of list price to square footage for homes for sale in the given time period. It is the median of the ratios of each home, not the ratio of two medians.

We show you data on what's been selling, broken out by single family homes, condos or both in the relevant time period. This data is updated once a month near the beginning of the month. We get our sold data from the MLS and public records. Find out what type of sold data we can show in your market.

Here's how we calculate statistics about homes sold:

• # Homes Sold : the number of homes sold in the given time period.
• Median Sold Price : the median selling price for the type of home that sold in the given time period.
• Median Sold $/Sq. Ft. : the median of the ratio of selling price to square footage for homes of a certain type sold in the given time period. It is the median of the ratios, not the ratio of two medians.
• % Sale-to-List : the mean of the ratio of sale price to list price for the type of home sold in the given month. It is the mean of the ratio, not the ratio of two means.

In this graph, we've grouped homes that went off the market into buckets based on the number of days that they were on the market and the number of price reductions that were made on a certain home while on the market. This graph includes homes that sold or came off the market for another reason. These numbers are calculated for 90-day time periods and are updated each day.

This graph can help you decide if you should wait for a seller to drop the price of a home. Check out this in-depth discussion of how to use this graph.

In the price reduction section, we show you data based on 90-day windows for the number and size of price reductions for homes that either sold or went off the market for another reason. We calculate these values daily and break them out by home type. These values include:

• Days on Redfin: the median number of days homes were on market before selling or being withdrawn.
• % Homes with Reductions : the ratio of the number of sold and withdrawn homes that with at least one reduction to the number of all sold and withdrawn homes.
• # of Reductions : the median number of price reductions for homes that went off the market with at least one reduction. We don't count homes that did not have a price reduction.
• Total % Reduction : the median percent reduction for sold and withdrawn homes with at least one price reduction.. For homes that had multiple reductions, we calculated the total percent reduction. For example, if a home had two price reductions of 10% and 20% before going taken off the market, the total percent reduction is 28% (100% - ( (100% - 10%) * (100% - 20%)) = 28%).

Learn more about Redfin's market stats and trends:

• Price Reductions
• Viewing Redfin's Stats and Trend Pages
• Frequently Asked Questions (FAQ)