Having once upon a time been a building and remodeling contractor (I’m now in Home & Garden Industry Business Management and IT Consulting) I’m in general agreement with this topic in this article but with some caveats.  In all my years in the business I’ve seen far to many DIY projects where a $5K investment turning in to a $5K negative hit to the value of a home because it was poorly designed and conceived or more ofter executed terribly.