Matt Muenster goes behind-the-scenes of the HGTV® Dream Home 2015.

John Gidding surprises the winner of the HGTV® Dream Home 2015.

Tiffany Brooks surprises the winner of the HGTV® Dream Home 2017.

Tiffany Brooks surprises the winner of the HGTV® Dream Home 2018.

Alison joins the team for the construction of the HGTV® Dream Home 2019.

Nestled in the mountains of Whitefish, Montana, HGTV Dream Home 2019 makes the most of its wooded setting with a stylish front yard that maximizes style and maintains a connection to wild west beauty. Located on Big Mountain in Whitefish, Montana, with breathtaking views of the surrounding valley and Whitefish Lake are visible from the property.

Tiffany Brooks and Brian Patrick Flynn surprise the winner of the HGTV Dream Home 2019 in Whitefish, Montana.

Tamara Day and Brian Patrick Flynn build and design HGTV Dream Home 2020 in Hilton Head Island, SC. A behind-the-scenes look at the build.

Nestled among live oaks and green marsh, the coastal home is built from foundation to finished gem along the stunning waterfront. Over 3,500-square-foot coastal retreat on Hilton Head Island, South Carolina, in one of the island's most sought after communities, with landscaping that complements the traditional style home and embraces the Lowcountry vibe and mystique of the area.

Tiffany Brooks surprises the HGTV Dream Home 2020 winner with a virtual ambush.

HGTV® Dream Home 2021, a classic waterfront escape located in Newport, Rhode Island. This classic, Americana-inspired home combines modern, nautical style and smart home technology to create a truly relaxing retreat.

Designers Breegan Jane and Brian Patrick Flynn pull inspiration from Vermont's beautiful mountains to create a luxury A-frame cabin in Warren, Vermont, located in the heart of Mad River Valley with picturesque scenery and tons of recreational activities perfect for skiers, hikers and nature lovers.