Why this layout works
The L shape lets dining stay close to the house while a lounge area feels slightly separate. A planted inside corner can create a buffer rather than leaving an awkward hard-to-use angle.
Finish and joint-layout observations
Use one consistent finish and let joints follow the L-shaped geometry. Keep panel ratios balanced and do not create narrow legs that are difficult to furnish or joint cleanly.
Circulation, drainage, and maintenance
- Allow full chair pullback in the dining leg and a clear route around it.
- Keep the inside corner planted edge below slab elevation and manage water at the re-entrant corner.
- Estimate the two rectangles separately rather than approximating the L as one oversized slab.
What to verify before building
- Actual furniture dimensions, door swing, gates, and lawn access.
- Joint layout at the inside corner and any isolation at house walls.
- Drainage direction across both legs and the planted inner corner.
Frequently asked questions
How do you calculate an L-shaped concrete patio?
Break it into two rectangles, calculate each section, and avoid double-counting the overlap. Measure any steps, curves, or thickened edges separately.
Why add a planting area in the inside corner?
A planted inside corner can soften the geometry and reduce an awkward hard-surface angle, but it still needs drainage and enough usable patio width around it.
Related calculator preset
Start with the Large rectangular slab preset
This is an editable starting quantity for the main patio field only. Measure steps, walls, fire features, water features, shade supports, pool elements, and other non-rectangular work as separate items after their actual dimensions are known.
Related visual directions