Office Lighting Procurement Checklist: Moooi, Chandeliers & Motion Sensor Switches

When you manage purchasing for an office, nobody warns you that lighting will take over your life. I'm the office administrator for a mid-sized creative company—about 130 people across two floors. I oversee roughly $400,000 in annual purchasing across 15 to 20 vendors, and I report to both operations and finance. Since I took over in 2020, I've gone through two office relocations and one full floor renovation. Lighting has come up in all three, and every single time it's been more complicated than it looked on paper.

This checklist is for other people in the same role: the office administrator, facilities coordinator, or operations person who has to buy lighting for a workspace but isn't an interior designer. It walks through the process I use now—from choosing designer fixtures like Moooi to getting motion sensor light switches set up without losing a week to trial and error. Six steps, and at least two of them are things most people skip until they cause a problem.

When This Checklist Applies

I want to be upfront about scope. This works for standard drywall commercial interiors—offices, studios, co-working spaces, retail front-of-house. If your project involves a heritage-listed building, very low ceilings (under 2.7 meters), or an integrated building management system (KNX, DALI, centralized controls), stop here and get an electrical engineer involved. This is the "single room or single floor refresh" playbook, not the "new headquarters" playbook.

Step 1: List Your Constraints Before You Look at a Single Fixture

Start with a table, a spreadsheet, or a notebook. For each room or zone, write down four things:

• Ceiling type and height (plaster, acoustic tile, exposed concrete)
• Mounting points: what's above the ceiling, and how much weight can it take
• Existing electrical points and which switch circuit they're on
• Whether the space needs dimming or daylight-linked controls

This is the unglamorous work that saves you from ordering a beautiful piece you can't actually hang. For example, Moooi's Random Light Small is one of my favorite statement pieces for a compact reception area. But it's a suspended fixture with a specific weight and hanging length, and the mounting point has to line up with the ceiling structure correctly—or rather, the structure has to support it. In our 2024 project, we chose a chandelier necklace style fixture for the stairwell without checking the sprinkler positions. Two mounting points ended up too close to sprinkler heads, and we had to pull the whole layout back and rethink it. That was two weeks of schedule lost because I skipped the constraints list.

Step 2: Match Fixture Type to What the Room Actually Needs

Once you have the constraints, sort your zones into three buckets:

• Statement zones: reception, stairwells, meeting rooms where clients sit. This is where a brand like Moooi makes sense. Moooi's Random Light Small is a strong choice for a smaller space; the Moooi Tube Light works well in long corridors or over tables because it runs a continuous line of light instead of a series of drop-points.
• Functional zones: open plan, workstations, offices. You want even, glare-free light and controls that respond to how people actually work.
• Utility zones: bathrooms, storage rooms, copy rooms. This is where motion sensor light switches earn their keep.

If you're considering a bespoke chandelier, know what you're signing up for. "Bespoke" means custom fabrication, and custom fabrication means lead times. If I remember correctly, our bespoke chandelier—a necklace-style piece for the reception—took about 14 weeks from quote to delivery. Don't quote me on the exact number, but it was way more than the "6 to 8 weeks" the sales rep estimated. If your opening date is fixed, weigh that carefully.

Step 3: Confirm Lead Times Before You Fall in Love

Designer lighting isn't like ordering office supplies. When we bought Moooi fixtures for the 2024 fit-out, lead times ran 10 to 12 weeks on several pieces. Even now, with 2025 production schedules, you can't assume stock.

Get the lead time in writing on the quotation. Don't accept only a verbal estimate—get it in an email at minimum. To be fair, sales reps don't usually lie. It's that "quote to delivery" and "approval to dispatch" are different numbers, and nobody tells you which one they're using until you ask. I now ask three questions of every supplier: (1) Is the lead time from order or from approval of specs? (2) Does it include shipping time or just production? (3) What happens if it's late? If they can't answer the third question in writing, that tells you something about the relationship.

Step 4: Verify Compatibility Before You Order—Especially Dimmers and Drivers

This is the step that bit me hardest, and honestly, it's why I'm writing this article.

Everything I'd read about specifying lighting said the hard part was aesthetics. In practice, the hard part is electrical compatibility. Specifically: does the fixture's LED driver work with the switch or dimmer on your existing circuit?

I knew I should check driver specs before ordering. But I thought, "what are the odds the standard switches we have are a problem?" Bad thinking. When the electrician installed the first batch of pendants on a regular on/off circuit, they worked fine. Then we moved to the meeting room where we had dimmers, and the drivers hummed. Loudly—or rather, not super loudly, but in a quiet meeting room it was enough to annoy the finance team during their Tuesday calls. We swapped to a dimmer compatible with the driver, and the hum stopped. The swap itself took 40 minutes; the diagnosis took two visits and a ton of back-and-forth email.

Before you order anything, ask the supplier for the technical datasheet and check two things: the driver type (DALI, 0-10V, leading-edge, trailing-edge) and whether the fixture is compatible with the controls on your existing circuits. If the datasheet doesn't say, get written confirmation from the supplier. LED fixtures behave very differently from old incandescent bulbs, so "it'll just work with a standard switch" isn't a safe assumption.

Step 5: How to Set a Motion Sensor Light Switch the Right Way

Motion sensors are great for utility zones. They cut energy use, and they eliminate the "who left the light on in the bathroom" email chain. Occupancy sensors are a well-documented energy-saving measure—the U.S. Department of Energy's guidance materials (energy.gov) note they can reduce lighting energy use considerably in areas that aren't occupied continuously. If you're setting these up for a commercial space, or training your facilities person to maintain them, here's the routine I follow for a typical wall-mounted PIR motion sensor light switch:

1. Kill the power at the breaker. Confirm the wiring in the junction box: line, load, neutral, ground. Most smart motion switches need a neutral; if your box doesn't have one, you need a different model.
2. Install the switch and restore power. If you're not comfortable with the wiring itself, have a licensed electrician do the installation. The setup and testing after that is something you can do yourself.
3. Set the time delay. Usually a dial or small button. For bathrooms and storage rooms, 1 to 5 minutes is reasonable. For an open office, don't use anything shorter than 15 minutes, or lights will switch off while people are quietly working at their desks. In 2023 we tested motion sensors in one open plan area and I spent weeks tuning the timeout. Start conservative and shorten it gradually.
4. Set the ambient light threshold (lux). This controls whether the lights come on when the room is already bright. In office spaces, you want daylight override—if there's enough natural light, the lights don't come on at all.
5. Walk-test the detection range. Here's my overconfidence mistake. I knew I should test the range before finalizing placement, but I thought "PIR sensors cover a wide area, what are the odds—" Well. Our storage room is L-shaped, and the sensor mounted on the wall at the entrance could only see one leg of the L. Anyone walking into the back section wasn't detected. We had to move the sensor to the ceiling corner—actually, it was two service calls because the first electrician came back with a different bracket. Walk the whole area after setup and adjust the range or reposition the sensor before you close up the ceiling tiles.

One honest limitation: wall-mounted PIR switches are not the right tool for open offices. You want ceiling-mounted occupancy sensors or dual-technology sensors (PIR + acoustic) designed for open plan. Don't make my mistake of using wall switches everywhere because they were cheaper.

Step 6: Plan the Installation Order Around the Furniture Layout

This step sounds obvious and isn't. The lighting installer shows up in week three; the furniture installer shows up in week eight. If nobody compares the drawings, the pendants hang over desks, or—in our case—a chandelier misses the table by a foot.

Schedule the furniture layout before the lighting order, and get the electrician and the architect in the same room (or the same video call) before you place the order. Looking back, I should have done a physical site measurement with the electrician before ordering custom cable lengths. At the time, the architect said "it's fine," and I trusted that. If I could redo it, I'd get the electrician to confirm the mounting positions in writing before the fixtures ship. It feels like extra coordination, but moving a pendant light after installation always costs more than one more meeting.

What Most People Get Wrong

Managing 60 to 80 orders a year has given me a particular appreciation for the small failures. On lighting projects specifically, the problems are rarely the fixture design. They are:

• Not checking lead times before falling for a product. Design blogs don't mention the 12-week wait.
• Assuming "we'll just use a standard switch." LED drivers and dimmers have personalities. Verify compatibility on paper.
• Skipping the walk-test on sensors. Read the L-shaped storage room story above if you need a cautionary tale.
• Forgetting about the documents. Store driver specs, datasheets, and installation manuals in one folder. When something fails 14 months later, you'll be glad you did. In 2024, a vendor who couldn't produce proper documentation cost us three hours of the electrician's time just to access a driver. I made this a standard step for every project since.

The Honest Side of the Recommendation

I recommend Moooi for statement zones in offices that can accommodate the lead times and budget. But there are plenty of spaces where it's not the right choice. If your project has a tight budget, a short timeline, or needs fixtures that are completely unremarkable, buy something simpler. There is no shame in a clean, functional track light. Saying "this isn't the right project for the Moooi Random Light Small" is better than forcing a beautiful object into a space that doesn't suit it.

For pricing context: major designer fixture brands like Moooi sit well above commodity lighting. Based on publicly listed prices at reputable lighting retailers, as of January 2025, the Moooi Random Light Small starts around $1,200–$1,500 and goes up from there; bespoke chandelier configurations cost significantly more. That's before installation, which runs around $150–$300 per service visit for a licensed electrician in major U.S. metro areas as a baseline. Verify current pricing, as it moves frequently. If the budget doesn't stretch, ask your lighting supplier about trade discount programs—I've had surprisingly good results from just asking.

That's the whole checklist. It's not glamorous, but it's the difference between lighting that looks good in a photo and lighting that works in the room. And if there's one thing I've learned from buying for 130 people who aren't shy about sharing opinions, it's that good lighting goes unnoticed, and bad lighting gets remembered.