A successful spin-off of This Old House, this series sends experts Tom Silva (contracting, renovation, carpentry, home repair), Rich Trethewey (heating, air conditioning, plumbing, ventilation) and Roger Cook (gardening, landscaping, hardscaping) to the homes of viewers. Viewers write the show and producers select questions of broad interest and send the appropriate expert. For some special problems, like wells or electrical work, the "Ask" expert coordinates with a local contractor and with him narrates the project. Occasionally, follow-up discussions occur in the barn following the segment, where the experts and host Kevin O'Connor consider alternatives or clarify potentially murky points.

Other features include "What is It?" which presents a strange or old tool or device. Generally one of the experts knows exactly what it is and the others toss out various humorously implausible guesses before the truth is revealed, and "Viewer Tips" where viewers share their own labor or time saving suggestions.