Everything under the deck happens once
Gas to a kitchen and a fire feature, water to a spa and a hose bib, conduit to lighting and to the equipment pad, and the drainage lines that carry all of it away — every one of those runs under whatever you pour on top. Planning the backyard as one project means those trenches are dug once, in one pass, before the slab goes down. Adding an outdoor kitchen two years after the deck is finished usually means cutting into it, and a saw-cut patch in a concrete or stone deck never quite disappears. The order things happen in is worth as much attention as what they are made of.




