. >> reporter: rachel freeman and austin poynter are on the hunt for the home of their dreams in dallas. >> oh, wow. this is cool. >> reporter: a large kitchen and a yard are must-haves. >> a big old sink. >> good-sized pantry. >> i like the floors. >> reporter: but as the real estate market heat up in dallas and nationwide, speed is now the name of the game. if a house sounds promising, the couple has to act fast. >> if you don't, the it' gois to be off the market before you can even-- even take a look at it. >> reporter: open house traffic typically sluggish this time of year, has picked up. according to online realtor, zillow, some of the cities with the fastest growi home value are san so, seattle, nashville, and dal. at this point, peopl have to come in preapproved don't they? >> 100%. things are moving off the shelf so quickly, that if you're not submitting that, along with your contract for purchase, you're not going to get very far. >> you could do a small dining room tabl right here. >> reporter: for austin poynter, the question is whether the marketp g strong? >> it's like is