Adding balconies
Two balcony types: rectangular (one wall) and L-shaped (two walls at a corner). Both start from the Balcony / Patio tile.
A balcony extends a room out past the exterior wall — a rectangular one off a single wall, or an L-shape that wraps a building corner for a larger deck. RoomSketch3D draws the railing for you and shows the whole thing in 3D, so you can judge the view and how much usable depth you really have.
Both start from the Balcony / Patio tile. This page covers placing each, setting the length and depth, and what a balcony does and doesn't add to your plan.
Step by step
- 1
Pick the type
Open the Build panel (on a phone, Structural & Interior). In the Structural section tap Balcony / Patio, then pick Regular (off one wall) or L-Shape (wraps a corner).
Balcony / Patio sits in the Structural section; tap it, then pick Regular or L-Shape. - 2
Tap the wall (or two walls)
Balconies attach to outside walls only. Regular: tap the outside wall it projects from. L-Shape: tap the first outside wall, then the adjoining wall that lights up (the prompt reads Pick an adjoining wall (highlighted)).
A rectangular balcony projects from a single wall. - 3
Set dimensions
Select the balcony. In its settings set Length (along the wall) and Depth (outward); an L-shape has Leg 1 and Leg 2 length and depth. Stretch across wall runs it the full length of the wall, Covered adds a roof slab, and Railing, Rail height and Floor set the look. The railing renders automatically.
An L-shaped balcony wraps a corner — tap one wall, then the one beside it.
Tips
Make the depth usable
A depth under about 3 ft is really a Juliet balcony — enough to open a door onto, not to stand on. For a bistro table and two chairs, aim for 4–6 ft of depth.
Wrap the sunny corner
Use the L-shape at the corner that catches morning or evening sun, so the longer leg faces the light.
Common mistakes
Projecting into a setback
On a real lot the balcony has to clear the property line and any required setback. Draw the lot first, then size the balcony to fit inside it.
Forgetting the door onto it
A balcony needs a door or sliding door leading out. Add the opening in the same wall so the approach stays clear.
Frequently asked questions
How do I change a balcony's size after placing it?
Select it and edit Length (along the wall) and Depth (outward) in its settings; an L-shape has Leg 1 and Leg 2 length and depth. Stretch across wall makes it run the full wall. The railing re-draws to match.
Does a balcony count toward my floor area?
It's reported separately as balcony/patio area, not folded into the interior usable area — the same way a real plan lists it apart from conditioned space.
Can I change the railing style?
Yes. The railing renders automatically, and you can choose a style in the Inspector while the balcony is selected.
What's the difference between the rectangular and L-shaped balcony?
Regular projects from one wall; L-Shape wraps two walls at a corner. To place the L, tap one outside wall, then the adjoining wall that lights up.
Can I put furniture on the balcony?
Yes — add outdoor pieces from the catalog and drop them onto the balcony footprint, just like any floor area.
Start designing your room
Put this into practice in the floor planner: draw it, furnish it, walk through it in 3D — on web, iOS, and Android.
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