Does a poorly lit house feel oppressive? You don’t need major renovations—simple tricks can brighten it up. First, opt for light-colored decor: paint walls with off-white or light gray latex paint and lay light wood grain tiles on the floor. Light colors reflect light, doubling the sense of transparency. Second, choose slim furniture: select sofas and coffee tables with thin legs to reduce visual obstruction, allowing sunlight to penetrate every corner. Third, add auxiliary lighting: install track lights or recessed lights (no main ceiling light), place floor lamps in corridors and corners, and add vanity lights in kitchens and bathrooms. Layered lighting offsets darkness. Fourth, install more mirrors: hang a full-length mirror on the living room wall and a round mirror in the dining room. Mirror reflection amplifies light, turning dark rooms bright.