Select a construction unit and drag a circle (while hovering over a reclaimable object) to reclaim everything (of the same type) within the circle.

Reclaim Area

A contextual Reclaim Command‍

So it will reclaim only what is directly underneath your cursor (metal or energy). Hold right mouse and drag an area to reclaim all features of that type in the area you select.

You can also Queue multiple circles with SHIFT. (or see command queuing)

TIP: If you want to keep reclaiming an area you can also turn on REPEAT.

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ALT + Reclaim Area

Reclaim Area Specific Units = Drag a circle while hovering a unit to reclaim only this specific unit-type.
‍Useful when you f.e. want to reclaim all your T1 solars in your entire base, but nothing else.

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