Focal points affect interior design and home resale value by anchoring rooms and guiding furniture arrangement, which enhances flow and visual appeal. Common focal points include fireplaces, large windows, or artwork. Positioning sofas and seating to face these areas creates inviting social zones. A clear focal point gives rooms purpose and prevents awkward layouts that confuse buyers. Emphasizing these features with layered lighting and complementary furnishings boosts perceived value by showcasing attractive architectural elements and creating cohesive, welcoming spaces.