Yes — island receptacles have to be GFCI-protected and correctly placed per code (on the countertop, within 20 inches above it, or in a listed in-counter assembly, never below the counter), which requires a licensed electrician and a permitted circuit.

Yes, but it takes more planning than in a home with a crawlspace. We either trench and repour a section of the slab to run a proper gravity drain, or install an above-slab pump system if slab work isn't practical for your project — that decision needs to happen early, before flooring goes down.

Once an overhang extends much past 10 to 12 inches without support underneath, it's at real risk of stress cracking, especially with everyday leaning or bumping. We add corbels or steel bracket support under any overhang beyond that range.

Either a ceiling-mounted hood with ductwork routed through the attic to the exterior, or a downdraft system built into the cooktop that vents down through the cabinetry and out through the slab or a nearby exterior wall. Both need to be planned before the island's rough-in.

Only if you're adding plumbing (a sink or dishwasher) and slab trenching is the chosen route. An island with just electrical and no plumbing typically doesn't require breaking into the slab.

A straightforward island with electrical only can often be completed in about a week. Add plumbing with slab work, or a full ventilation solution for a relocated cooktop, and the timeline extends to two to three weeks or more depending on permitting.

Yes, though freestanding islands generally can't have hardwired electrical, plumbing, or ventilation run to them the way a built-in island can — they work best as pure workspace/storage additions rather than islands with a sink or cooktop.

Countertop receptacles on the island need to be on a GFCI-protected circuit per code, and depending on what else is on the island (a beverage center, warming drawer, or cooktop), a dedicated circuit is often required for that specific appliance as well.