A purported Real-Time Home Price Tracker for June 2013 shows home prices increasing 19 percent year over year across 19 major U.S. markets.

The report comes from technology-powered real estate brokerage Redfin, a Seattle-based firm that is seeking a national presence for data and transactions.

Strong price increases are continuing to support growing inventory, which increased for the third consecutive month. However, home sales faltered in June, with a minor year-over-year gain, and a loss from May. While still firmly in seller's territory, the June numbers indicate a trend toward a more balanced market.

Nationally, the number of homes for sale was down 19 percent from June 2012, but increased 2.4 percent month over month. This is the third month-over-month increase in a row.

Home sales rose 2.7 percent from 2012, but fell 5 percent from May 2013. Ten markets saw sales increase from last year, but just six markets saw an increase in monthly sales volume.

This report is the earliest monthly analysis of home prices, sales and inventory across 19 U.S. markets, published weeks before any other index, based on the local databases used directly by Realtors to list properties and record sales.

You can see the complete Redfin Real-Time Home Price Tracker at this link.