When touring a home, buyers naturally notice countertops, faucets, and cabinet finishes. The spaces behind cabinet doors may receive far less attention. Yet the inside of a kitchen or bathroom cabinet can reveal useful clues about storage, plumbing access, moisture, and how well a room will function. A quick, respectful look can help you see beyond the staged presentation. Start Under the Sinks The cabinets beneath kitchen and bathroom sinks are especially informative because they contain plumbing connections. Look for water stains, warped cabinet bottoms, peeling surfaces, or signs of past repairs. A musty smell can be another reason to…