What happened to all the vacation rentals?

New data shows where — and when — to book your summer accommodations

Nags Head in the Outer Banks of North Carolina.

Looking for an inexpensive vacation rental for this summer? You had better hurry because they're booking up fast, according to new data released by Vrbo.

The numbers show an "unprecedented" early surge in demand for summer vacation homes, eclipsing even last year's record bookings. In fact, demand for Vrbo properties this summer is already outpacing last summer by nearly 15 percent.

OK, you probably could have guessed that this would be a big year for vacation rentals. But where can you still find affordable vacation homes?