My worst day building wasn't a mistake. It was the not-knowing. I'd been in the basement for hours — thought I'd solved a problem, cut a piece, wrong. Measured again, cut again, wrong again. Upstairs, my family was outside on a beautiful day — sunshine, low humidity, everyone together. I was going deeper into what I came to call the cave of despair: alone with plywood, spinning my wheels, no idea what the next step was.
That feeling is the thing that kills builds. Not skill. Not tools. Not budget. Confusion — not knowing what comes next. It's why I built these plans.
I'm David Peterson — father of six. I've built six indoor playhouses for my kids: a bakery with a real serving window, a fire station with a pole and coat hooks, a dress-up shop with a full-length mirror, a cottage with working shutters, and a grocery store with apartment windows on the second floor — a whole Victorian village, scattered across bedrooms and bonus rooms in our house. Each build taught me something. The builds got faster. The notes got clearer. And the same seven design decisions kept showing up, in the same order, every time.
This post is about those seven decisions — not construction steps (you'll get those in the plans), but what to think about before you pick up a saw. If you've been looking for a real guide to a DIY indoor playhouse — not just a gallery of finished photos — this is where to start.
The best playhouse locations are the spaces you're currently ignoring.
Under the stairs. An unused closet. The dead corner of a basement. The end of a hallway. Under a loft bed. That gap along the wall that's "not big enough for anything."
These overlooked spaces are often better for playhouses. Kids love small, enclosed, secret-feeling places — and constraint forces the design decisions that make a playhouse feel real. When you can't sprawl, every detail has to earn its square inches.
One of my best builds — a cottage called Rose Cottage — sits in a space under our stairs that's roughly 2.5 feet wide. I'd originally planned it as storage. It became one of the most-played-in structures in our house. More on that later.
You don't need a spare room. You need to look at your house differently. The spot is probably already there.
Every playhouse I've designed started with the same seven questions. The order matters — each answer shapes the next.
Physical constraints come first. Measure the spot: width, depth, ceiling height. Account for clearance — you'll want room to walk around the structure, and you'll need access behind it during construction. If it's a basement, map the ductwork and support columns. If it's under the stairs, the sloping ceiling becomes a design feature, not a limitation.
The footprint decides everything downstream. A 4×5-foot rectangle produces a very different playhouse than a 6×8-foot one — and neither is wrong. You can't design what goes inside until you know the boundaries.
This is the question most people skip. They jump straight to "what will it look like?" before asking "what will happen inside it?"
Will they climb? Cook? Sell things to each other? Put on shows? The answer shapes every feature you build. A pretend bakery needs a serving counter and a window. A reading nook needs a bench and good light. A fire station needs hooks, a pole, and a bay door big enough to run through.
Watch your kids play for a week before you decide. What they already do tells you what the playhouse should support.
This is where it stops being "a playhouse" and starts being "the bakery" or "the fire station." Pick a building type. Name it. Give it an identity.
Every one of my builds belongs to a Main Street USA theme — a Victorian village with a sweet shoppe, a fire station, a grocery store. Each building has a consistent architectural style, and the kids refer to them by name. That theme wasn't planned from the start. It emerged after the second build. But it transformed isolated structures into a connected world.
You don't need a whole village. You need one building with enough identity that your kid calls it by name instead of "the playhouse."
This is the decision that separates a playhouse from a storage shed. Every major dimension — door height, counter height, window sills, shelf placement — should be driven by the children who'll use it.
I spaced the rungs on one ladder based on my daughter's natural foot-lift height — the distance her leg comfortably reaches without straining. A 54-inch door means a five-year-old walks in standing tall and you have to duck. That's the right call. When everything matches the child's body, the playhouse stops feeling like furniture and starts feeling like architecture. Their architecture.
Platform-and-panel construction is what I use for every build. A flat plywood deck on a 2×4 frame, with plywood wall panels attached to top and bottom plates. It's simple, strong, and you can build walls flat on the floor and tip them up into position.
The platform matters more than you think. When a child steps up onto a raised deck, their brain registers they've crossed into a different place. A box on carpet is furniture. A box on a platform is a building. Keep the structure honest — the fanciest joints in the world don't matter if the platform isn't flat and square.
A plywood box with a door cut in it looks like a plywood box with a door cut in it. The transformation happens in layers.
First: siding — ripped underlayment strips for clean lap siding, or beadboard for a cottage feel. Then trim — corner boards, window casings, a proper door frame. Then paint. Then the details compound: shutters, a flower box under the window, a sign above the door. Each layer takes a few hours. Each one dramatically changes how the structure reads.
This is where your kids will have opinions about colors. Let them choose. Colors they pick carry ownership, and ownership carries play. The exterior layers account for maybe 20% of the build time and deliver 80% of the wow.
After the structure is built and the layers are on, there's a category of detail that crosses a line — small, specific, real-building details that make kids stop seeing a playhouse and start seeing a place.
A doorbell that actually rings. A mail slot in the door. A house number screwed to the front. A welcome mat. Sconces flanking the entrance.
Lighting belongs here too. Battery-powered LED puck lights work beautifully — peel and stick, done in ten minutes. If you're comfortable with basic wiring, though, a dimmer and a few recessed lights create something extraordinary. I wired 24 recessed lights on a dimmer in one build, with sconces and switched outlets for holiday lighting. But peel-and-stick LEDs get you 90% of the effect with none of the complexity.
Remember Rose Cottage — the 2.5-foot space under the stairs I mentioned earlier? My daughter Esme has a condition that makes sustained independent play rare. The details in that tiny cottage — a play kitchen sized to her reach, a door she could operate independently, everything at her height — produced the longest stretch of continuous play I've ever seen from her. Over ninety minutes. In a space I almost filled with storage bins.
That's what the right design decisions produce. Not a project. A place they move into.
You don't need a full workshop. Here's the honest list.
Minimum tools:
Nice-to-have tools:
If your only saw is a circular saw, you can build this. Every cut in our plans can be made with a circular saw and a straight-edge guide. A table saw is faster. It is not required.
Materials:
Total cost runs $300 to $800 depending on size and how far you take the finish. The structure itself is cheap — mostly plywood and 2×4s. The details that make it look like a real building — siding, trim, a flower box under the window, the paint colors your daughter insists on — that's where you choose your budget.
Our indoor playhouse plans include a complete materials list with quantities calculated for your room.
Building the structure correctly is one thing. Building something kids actually inhabit — something they move into, rearrange, and defend as their own territory — takes a different kind of attention.
Scale it to the child, not the adult. Every major dimension should be driven by the kids who'll use it. A 54-inch door means a five-year-old walks in standing tall and you have to duck. That's the right call. When the door height, the counter height, and the window sills all match the child's body, the playhouse stops feeling like a piece of furniture in the living room. It becomes architecture. Their architecture.
Give parents a sight line. At least one window or opening should face wherever you normally sit. Not for surveillance — for connection. They will call you over to see something, show you something, sell you something, or tell you something roughly forty times a day. Make it easy to look in without getting up.
Remember that sound travels. Indoor playhouse means indoor noise — and kids inside a playhouse are not quiet. If the structure shares a wall with your bedroom or your office, solid ¾″ plywood panels dampen sound significantly better than open framing. Think about placement and wall thickness early, not after the build is done.
Build in a disassembly path. Use screws, not glue, for every structural joint. The day will come when this playhouse moves to a different room, goes to a friend's family, or needs to be stored in the garage for a season. Future you will be grateful you didn't reach for the wood glue.
Commit to the "real building" effect. This one surprises people. The details that make kids believe they're in a real place are small and extremely specific: a doorbell that actually rings, a mail slot in the door, a house number screwed to the front, a welcome mat sized for small feet. These details cost almost nothing and take minutes to install — but they're the difference between a structure that gets played in every day and one that becomes a storage shelf by February.
This post gives you the roadmap. Our plans give you the turn-by-turn.
What Peterson Plans include that a blog post can't:
Every plan is designed so a circular saw is the only saw you need. A table saw makes the work faster. It doesn't make it possible.
I'm a psychologist who studies how people think. I designed every step of these plans so you won't get lost.
We're finishing the last buildings in the playhouse collection right now. If you want to know when they're ready — and get first access when plans go live — drop your email below.
Enjoy the build.