Custom built-ins are way better long-term – perfect fit, no wasted space, and sturdier construction that doesn't sag over time. IKEA works for temporary but custom feels integrated into the home. Look for GTA companies that specialize in residential storage. One example is this site from a Vaughan shop that covers closets and wardrobes: They do design to install. In my view, prioritize adjustable shelving and soft-close features. Definitely worth it for main bedrooms if you're staying in the house.