building site
US /ˈbɪl.dɪŋ ˌsaɪt/
UK /ˈbɪl.dɪŋ ˌsaɪt/

1.
a place where a building is being constructed
:
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Safety helmets must be worn on the building site.
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The new hospital is being built on a large building site near the river.
a place where a building is being constructed