The scope items that move a commercial fit-out from drawings to powered-up—in the order they actually have to happen, so nothing surfaces at final inspection.Pillars Electric · February 2026
Most commercial tenant build-outs don’t go sideways because of the big-ticket items—they go sideways because of a forgotten dedicated circuit, a panel that was already maxed out, or a data rough-in that nobody coordinated until the ceiling was about to close. The electrical scope on a fit-out is mostly small decisions that compound. Below is the checklist we run on a commercial tenant build-out, organized in roughly the order each item needs attention.
Before anyone talks about layout, find out what you’re working with. Pull the existing panel schedules, confirm the actual available capacity (not the nameplate, the real loaded condition), and check whether the base-building service can carry the new tenant load. A space that previously held a low-density office does not automatically support a commercial kitchen, a lab, or a server room. If the panel is full or the feeder is undersized, that’s a long-lead conversation—sometimes a distribution upgrade—and you want it on the table in week one, not week ten.
Translate the program into amps. Total connected load, demand factors, spare capacity for future growth, and the dedicated equipment the tenant is bringing. This calculation drives panel sizing, the number of home runs, and whether you can sub-feed from existing gear or need a new panel. Owners frequently under-scope here because the broker’s square-footage assumptions don’t match how the tenant will actually use the space.
Lighting is where energy code, aesthetics, and budget collide. Confirm the fixture package, the lighting power density limits for the occupancy, and—critically—the controls. Most commercial jurisdictions now require occupancy sensors, daylight harvesting near windows, and automatic shutoff. These aren’t add-ons; they’re code, and they affect rough-in. Decide early whether you’re on a low-voltage controls platform or line-voltage switching, because that changes the conduit and box layout.
Walk the equipment list line by line. Copiers, point-of-sale, refrigeration, IT gear, medical equipment, and anything with a motor usually wants a dedicated circuit—and often a specific receptacle configuration. This is the single most common source of post-occupancy change orders: the tenant moves in, plugs in a piece of equipment, and trips a shared circuit. Capture it before rough-in.
Power and low-voltage live in the same ceiling and the same walls. Data drops, AV, access control, and security cabling all need pathways, and they need to be coordinated with the electrical rough-in so you’re not fighting over the same stud bay or running data parallel to power where you shouldn’t. Even when a separate vendor handles cabling, the electrical contractor sets the conduit, J-boxes, and stub-ups. Get the layouts overlaid before anyone opens a wall.
The electrical permit follows the stamped drawings, and in most Texas jurisdictions it’s pulled by the licensed contractor performing the work. Build the inspection sequence into the schedule—rough-in inspection before cover, then final—and know your authority having jurisdiction. In our home market, the process has its own rhythm; we cover it in detail in our Houston commercial electrical permit guide. Missing a rough-in inspection means tearing back open, which is the most expensive kind of rework.
Electrical isn’t a single phase—it threads through the whole job. Underground or in-slab work first, then rough-in after framing and before drywall, then trim and devices after paint, then fixtures, then final connections and energization. The two milestones that protect your schedule are the rough-in inspection and the date gear actually arrives. Both have lead time. Both should be tracked from day one.
Verify capacity, calculate the load honestly, lock lighting and controls, catch every dedicated circuit, coordinate low-voltage before walls close, permit and inspect on schedule, and sequence against the GC. Run that list and the fit-out powers up clean. Skip a line and you’ll find it at final inspection—at the worst possible moment.
Pillars Electric self-performs commercial build-outs across the Houston metro—office, medical, retail, and industrial—from rough-in to final connection. If you have a space, a set of drawings, or even an early-stage scope, send it to us and we’ll tell you exactly what the electrical path looks like.
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