Why Do You Need a Contractor? Before setting out to hire a contractor, know who and why you are hiring them. Do you need a general contractor or are you able to do some of the work yourself and will hire skilled subcontractors? In your search for a contractor, be sure to check reviews in professional service websites. Houzz, Angi and Home Advisor are popular sites. Also check professional organizations such as NARI (The National Association of Remodeling Industry) Better Business Bureau and other local agencies.