The time it takes to build a closet varies widely depending on the project's size, complexity, and level of customization. On average, construction can take anywhere from a few days to two weeks.

A simple reach-in closet might be completed in less than a day, while a more complex walk-in closet could take one to two days or more. A typical project often falls in the 2-to-5-day range. However, a large, highly customized walk-in closet that requires structural changes, like moving a load-bearing wall, will take significantly longer.

A professional contractor can provide the most accurate time estimate for your specific project. If you are planning a DIY build, it is best to budget additional time.

Bump-out additions can add some space to a closet without requiring any significant structural work. This entails pushing back the existing rear or side of the closet, simply moving the wall into either an adjacent room or unused space. For ground-floor closets, this could even be extended to the exterior of the home, but that has its own complications. Bump-outs are a good discussion to have with your contractor if you’re just looking to increase the space a little—not renovate the entire closet space.

You can turn an adjacent room into a walking closet by just rearranging the room. This means removing the furniture and adding racks and an island in the center if you have that in your budget. Houses with two bedrooms connected to each other are great options for large walk-in closets that don't require any structural changes or much building whatsoever.

The average closet remodel cost ranges between $500 and $2,500. However, the cost can vary greatly depending on the project scope. Homeowners can expect to pay $10 to $25 per square foot on a closet remodeling project.