conn:
I used Closets by Design to put cabinets/shelves, etc., in both my den and living room. Absolutely wonderful work.
But, 784 is right: they are expensive, and there can be issues of flexibility in measurements.
I'd had similar work done up north by different company, so knew pretty precisely what I wanted here. Aside from one small misunderstanding (quickly resolved), I remain very happy with their work (4-1/2 years ago).
SWR
