Par levels for Airbnb supplies: the hotel trick that means you never run short

A guest checks in, reaches for the toilet paper, and there's one square left. Or the coffee's gone, or there are no clean towels for the second bedroom. None of it is a disaster on its own — and all of it is exactly the kind of small, avoidable miss that turns a five-star stay into a four-star review and a late-night "hey, quick question" message. Running out of supplies mid-turnover is one of the most common own-goals in short-term rental, and it has a boring, decades-old fix that hotels and restaurants have used forever: the par level.

This is a plain-English guide to par levels for STR supplies — what a par level is, how to set one for every consumable, the simple reorder math that turns "am I low on anything?" into an exact shopping list, and how to run it across a whole portfolio without it becoming a second job.

What a par level is

A par level is the amount of a supply you want to have on hand at all times — the baseline you restock back up to. The word comes from hospitality and food service, where running out mid-service isn't an option, and the idea is exactly as simple as it sounds: for each item, you decide a target quantity, and whenever you're below it, you buy the difference. That's the whole method.

What makes it powerful is that it moves the thinking to once, up front, when you're calm — instead of every single restock, under time pressure, from memory. You decide "this cabin should always have 24 rolls of toilet paper, 6 shampoos, 40 coffee pods" one time. After that, restocking isn't a judgment call anymore; it's arithmetic.

How to set a par level

A good par level covers your usage between restocks, plus a safety buffer for the unexpected. The rough logic:

• Estimate usage per turnover — how much of the item a typical guest stay consumes. A weekend couple burns through less toilet paper than a week-long family of five.
• Multiply by turnovers between restocks — if you shop weekly and turn the place over three times a week, your par has to cover three stays, not one.
• Add a buffer — a cushion for the big group, the longer stay, or the shopping trip you have to skip. Running slightly over par costs a little cash; running out costs a review.

You won't nail it on the first guess, and that's fine — par levels are meant to be tuned. If an item keeps hitting zero, the par is too low; if you never touch your backups, it's too high and tying up cash and closet space. A season or two of adjusting lands you on numbers that just work.

The reorder math (it's one subtraction)

Once you have a par level and a current count, the restock quantity writes itself:

reorder quantity = par level − on-hand (never below zero)

Par of 24 rolls, 9 on hand → buy 15. At or above par → buy nothing. That single subtraction, applied to every item, turns a vague "I think we're getting low on stuff" into a precise, complete shopping list. Multiply each line's reorder quantity by its unit cost and you also get the cost of the restock run before you leave the house — no surprises at the register, and a real number you can fold into each property's expense tracking.

Running it across a portfolio

For one unit, par levels are handy. For several, they're the difference between organized and chaos — because now you're juggling different pars for different properties, and a single mental model can't hold it. The fixes are structural:

• Par per item, per property. The beach house and the studio loft need different amounts of everything. Track each item under its property so the pars stay separate.
• Shop by category. Group items — bathroom, kitchen, cleaning, laundry, amenities — so a supply run maps to store aisles instead of a random scramble.
• Shop by property. When you're restocking one unit, you want that unit's list and its total, not the whole portfolio's.
• Update on-hand at the turnover. The one habit the system needs: a quick count as you clean, so the numbers stay honest.

Where it fits in the turnover

Par levels aren't a separate chore — they slot straight into the turnover you're already doing. The restock step of your turnover checklist is exactly where you glance at the on-hand counts and flag what's below par; the reorder list is ready before you've locked up. Done this way, "did we run out of anything?" stops being a question you answer by getting a text from an annoyed guest, and becomes a number you saw coming days ago.

The whole point of a par level is to make a decision once so you never have to sweat it again. Set the target for every consumable, check the counts as you clean, and let one subtraction turn your inventory into a shopping list with a price on it. It's the least glamorous system in short-term rental — and it quietly prevents one of the most common ways hosts lose a star.

This is general operational and inventory guidance for short-term-rental hosts, not tax, accounting, or legal advice. Quire Paper is independent and not affiliated with, endorsed by, or sponsored by Airbnb or VRBO; those names are the trademarks of their respective owners.