Need help planning your child’s room? Look inside The Kidspace Idea Book for design inspiration—from lofts, playhouses, secret hideaways, high-tech homework centers, and colorful bathrooms to the backyard world of forts, treehouses, clubhouses, and playhouses.

In this excerpt from The Kidspace Idea Book, author Wendy Jordan focuses on bedrooms for preteens. You’ll find out how to design spaces that meet your children’s need for study, sleep, and socializing and reflect their personalities and interests.

And now for the high-intensity years. You know what I mean. Kids nine or even younger officially become preteens when suddenly they decide they’ve got to be with friends (either in person or on the phone), must have the right clothes, and have to personalize their rooms from floor to ceiling.

Rooms for preteens are three-dimensional portraits of who they are or who they want to be. For girls, the portrait is likely to be frills and ruffles. Boys this age create dens of sports or music, dinosaurs or computers, whatever excites them.

Kids can have their room their way, and parents can make it work better for them by creating atmosphere without sacrificing practicality. In a girl’s room, for example, wrap a trellised arch around the window and complete the structure with a window seat containing inset drawers. For a boy, frame the windows with lockers instead of a trellis.

Preteens need space—literally and figuratively. After raiding the refrigerator, they and their friends will stampede to their room. That’s why compartmentalizing the room is important. The areas where kids sleep and do homework and keep their clothes should be separate from the place where the crowd sits and listens to music. Mold that conversation niche with a soffit and partition enclosure, a lowered ceiling or a ring of built-in bench seating (which could be used as an extra bed when a friends stays over).

Junk overload can become a real issue at this stage. An expansive system of shelves, cabinets, pigeonholes, and racks—built under seats and countertops; around doors, windows, and desks; in corners and along any unused wall space—can fit into the theme of the room while helping kids keep books and magazines, CDs and videos, clothes, and accumulated stuff from taking over.

Natural light works wonders

A little sunlight makes a big difference in kids’ spaces. Natural light adds a spark of magic to the tiniest room or out-of-the-way corner. Cut a window opening to turn a closet into a playhouse. Pierce the roof with a skylight to create a bright attic room. Use glazed rather than solid walls to extend sunlight into interior spaces. It’s not always necessary to cover windows with curtains or shades. For privacy and light, consider replacing clear glass with frosted panes.

Sleeping over (and under)

Loft beds make such great use of space that it’s easy to understand why they are so popular in college dormitories—or anywhere space is at a premium. And whatever a loft bed can accomplish in a dorm room, it can do with much greater style in a child’s bedroom.

An architect built this “room in a box” of heavy timbers to relieve the off-putting squareness of his daughter’s closetless room. Now she’s got a curtained closet, a bed with loft bunk, and built-in shelving.

Although a room doesn’t have to be tiny to justify a loft bed, the structure will dramatically increase usable space. When company is over, the loft doubles as an extra bed. The rest of the time, the loft serves as a secret getaway or retreat.

Though fairly easy to construct, they’re also for sale from many bunk bed manufacturers. Whether building or buying, there are a few things to consider. First, make sure that no portion of the loft is resting on movable furniture that can shift and cause the structure to collapse. Lofts should be freestanding. And don’t make the loft out of pressure-treated wood. Treated lumber is designed for outdoor use only and its chemicals can be hazardous in an enclosed space.

Lofts should stand without leaning against the walls or putting pressure on the ceiling. Safety railings on top bunks are a must. If the loft is placed parallel to and up against a window, safety railings should always be installed on the window side, too.

Because houses often have different ceiling heights, be sure and measure twice before ordering a loft bed. The bed will work best if there is enough room between the top of the mattress and the ceiling so that a child can sit up in bed. The large room is wide open, yet organized into study, storage, and play zones. The high point of the room is a tall loft that is both bed platform and gateway to a cupola.

Clutter control

Kids’ rooms are flooded with stuff. Most kids don’t know what to do about it, and they don’t even recognize that it bothers them. But when the chaos subsides, they feel better.

Parents can do their kids a favor by helping them control the clutter. Parents can’t change their kids’ personalities, but can set up a system that will harmonize with their children’s habits. If a child is basically disorganized, don’t expect absolute order. Instead, propose that she keep her desktop clear, or reserve one shelf for loose papers, or toss all her sports gear into one big box. For a messy kid, hooks are more likely to be used than hangers, and big containers are more practical than rows of little cubicles and shelves.

Plenty of built-in storage, including a desk and computer center, help keep this well-planned room organized (see the photo at left). The laminate cabinet system with inset desk covers one whole wall. A beam outlines a display bay at the entry, and the bathroom connects to another corner of the room.

Even young children can get organized. Ask them how they want to group their stuff—Legos in one basket, cars and trucks in another? If they pick the system, they’ll probably use it. A simple bin system may be best for teens. They can pile clean clothes in one, dirty clothes in another. If all else fails—there’s always the yard sale. Even a plain wood cabinet can assume a personality of its own with some imaginative application of paint and trim.

Wendy A. Jordan is an award-winning magazine writer and editor. She has been covering residential remodeling for over 25 years. She is the author of Great Kitchens, The New Kidspace Idea Book, and Making Room, all publidhed by The Taunton Press.