On the penultimate episode of "Rock the Block" Season 4, the teams set their sights and renovation budgets on their home exteriors. This week, they're tasked with overhauling the house siding, landscaping, backyard, and patio.

But, host Ty Pennington throws the HGTV stars a curveball—and an extra $1,000—to complete a design challenge. In addition to all the other work they're putting into their exterior designs, they must also create a recreational activity area.

Click the player above to hear us discuss who put the "great" in the great outdoors on "Rock the Block" this week.

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