1. Measure the space, not the sukkah
Go outside with a tape measure and mark the actual footprint you can give up. Then subtract a foot on every side you need to walk around. People routinely order a 10 x 10 for a patio that measures 10 x 10 and then discover there is no way past the wall to the back door.
Check what is overhead too. A sukkah must be open to the sky — nothing may cover it, no balcony above, no tree canopy, no eave overhang. This is the single most common reason a sukkah is not kosher, and it is invisible until you look up.
2. Count the chairs
Work out the largest meal you will actually host, not the average one. Then use this as a rough guide — it assumes a table down the middle and room to get in and out.
| Size | Seats | Typical use |
|---|---|---|
| 5' x 10' | 2–4 | A narrow balcony or a side alley. |
| 6' x 10' | 4–5 | Small patio, one table. |
| 8' x 10' | 6–8 | A family, comfortably. |
| 10' x 10' | 8–10 | The most common choice. |
| 10' x 16' | 14–16 | A family plus regular guests. |
| 10' x 20' | 16–20 | Hosting most meals. |
| 16' x 20' | 26–32 | Large family or a small shul. |
3. Know the minimum dimensions
A sukkah has to meet minimums to be valid. In brief: it needs at least three walls; the walls must be at least ten tefachim high (roughly 40 inches, though opinions differ on the exact conversion) and no taller than twenty amot; and the floor area must be at least seven tefachim by seven tefachim — about 28 x 28 inches.
Every kit we sell clears these comfortably. We mention it because people building around an existing wall or fence sometimes end up short, and it is worth checking before Yom Tov rather than during it.
Measurements and halachic standards vary by community and custom. If your situation is unusual — building against a house wall, working around a tree, an odd-shaped balcony — ask your rav. We can tell you what a kit does; we cannot pasken.
4. Buy the s’chach to match
S’chach is sold separately and by mat size, not by kit. Measure the roof opening of the sukkah you are buying and pick a mat that covers it. Overhang is fine. A gap is not — the whole roof needs covering, so it is better to order slightly large.
You do not have to work this out yourself: every sukkah listing states exactly how many mats its roof takes and which size to order.
5. Think about wind before you think about looks
A sukkah is a temporary structure. It is not engineered for a storm, and no kit on the market is. If you are somewhere exposed — a rooftop, a coastal town, an open field — anchor it properly with stakes and tie-downs, and be prepared to take the walls down if serious weather is forecast.
Larger footprints catch more wind. A 20 x 20 on an exposed roof needs more anchoring thought than a 10 x 10 in a sheltered garden.