National Association of Certified Home InspectorsThe seller has accepted your clients' offer and now, with your help, your clients must choose a home inspector. Should you steer them toward the inspector who writes the softest reports? Should you steer them toward the inspector who pays to be on your office's preferred vendor list? Should you help them find the cheapest inspector? The answers to these questions are of course No, No, and Hell, no.
You have a fiduciary duty to your client and, therefore, must recommend the very best inspectors. If you recommend a patty-cake inspector, an inspector who indirectly pays for your recommendation, or a cheap inspector, you violate your fiduciary duty to your client.
The National Association of REALTORs defines your duties in their Code of Ethics. Article 1 requires you to protect and promote your clients' interests. Article 6 requires you to disclose any financial benefit you may receive from recommending related real estate services (this also includes any benefit to your broker).