CoordinateBounds

CoordinateBounds[coords] gives a list {{xmin,xmax},{ymin,ymax},…} of the bounds in each dimension of the region defined by coords. 

CoordinateBounds[coords,δ] pads the ranges of coordinates by ±δ in each dimension.

CoordinateBounds[coords,Scaled[s]] pads by the scaled amount s in each dimension.

CoordinateBounds[coords,{p1,p2,…}] pads by p1, p2, … in successive dimensions.

CoordinateBounds[coords,{{p1min,p1max},{p2min,p2max},…}] gives {{xmin-p1min,xmax+p1max},{ymin-p2min,ymax+p2max},…}

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