When did Grand Designs Season 21 Episode 4 air?
Grand Designs Season 21 Episode 4 aired on January 27, 2021.


British television series which features unusual and often elaborate architectural homebuilding projects.

Energy conservationist Andrew plans to build a radical, self-heating home by storing the warmth of the summer sun into insulated earth banks. But will this gigantic thermal experiment work?
Direct answers for episode-level questions and details.
Grand Designs Season 21 Episode 4 aired on January 27, 2021.
This episode runs for approximately 45 minutes.
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