Heavy smoke reported from the first units arriving at 9724 32nd SW, which is described as a single-family house. Everybody is said to have gotten out OK.
UPDATE: Here’s two pictures from WSB contributor Christopher Boffoli who also writes,
“Fire was out by the time I got there. Firefighters on the scene told me there were no injuries and they have not yet determined the cause of the fire. Every window in the house was totally blacked out from smoke damage.”