A gym that sits empty on Saturday morning is worth something to the rec league down the road, and most schools know it. What stops them is not demand. It is the four things that have to be true before an outside group walks in: a signed agreement, proof of insurance, a deposit in hand, and a way to invoice that does not depend on someone remembering. Get those four into the booking itself and rentals become a revenue line instead of a liability.
One agreement, used every time
Write a standard rental agreement once and use it for every booking. It should name the space and any sub-spaces (half the gym, one court, the practice field), the date and hours including setup and teardown, the fee and how it is calculated, the deposit and when it is returned, the cancellation terms, and the rules of use: supervision, food, equipment, parking, alcohol.
The point of a standard agreement is that nobody negotiates from scratch, and nobody forgets a clause because the booster president is a friend. If a group needs different terms, that is an amendment to the standard, not a new document.
Collect the certificate of insurance before the date, not after
A certificate of insurance (COI) is the renter's proof that their liability policy exists, with the coverage amount and dates. For most schools the requirement is general liability, often $1,000,000 per occurrence, with the school named as an additional insured. Your risk manager or insurer will have the exact figure; use theirs.
The practical rule: no COI, no keys. That only works if the COI is a required step in the booking, with the file attached to the reservation where facilities and the business office can both see it, and an expiration date the system watches. A COI in someone's inbox is not a COI.
Some renters, especially small clubs and first-time groups, will not have coverage. Point them at a per-event policy (several insurers sell them online in minutes) rather than waiving the requirement.
Take a deposit and publish the rates
A deposit changes behavior: groups show up, clean up, and cancel with notice. Collect it when the booking is approved, hold it, and return it after the event once the space is checked.
Publish a rate card with a small number of categories and apply it consistently: internal groups (free), affiliated groups such as boosters and the parish (reduced or free), nonprofits and youth leagues, and private or commercial use. Hourly rates per space, a minimum booking, and any staffing or cleaning fee. When the rates are public, the awkward conversation about why one group paid and another did not goes away.
Invoice from the booking
The most common rental failure is not damage or a no-show. It is a booking that happened and was never invoiced, or an invoice that went out and nobody tracked. The invoice should be generated from the approved booking with the rate applied, sent to the renter with a link to pay by card or bank transfer, and marked paid automatically. The business office should be able to see, per space, what was booked, what was billed, and what is outstanding, without asking facilities.
Bank transfer (ACH) matters here. Rental invoices are large relative to a ticket, and a 1.5% transfer fee capped at $20 is a very different number from a card fee on a $2,400 invoice.
How the four fit together
Put the whole thing in the order a renter experiences it. They find your booking page and see what is available. They request a space and time, agree to the standard terms, and upload their COI. Facilities approves the request, which reserves the space on the same calendar the school uses internally, so the request cannot collide with a practice. The deposit and invoice go out from the approval. The renter pays from their phone. The business office sees the money on the same event, and the COI expiration is on the calendar too.
None of the steps is new. What changes is that they happen at booking, in one place, instead of across a form, an email, a folder, and a spreadsheet.
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In Admittee: facility rentals include a public booking page, a renter portal, e-signed agreements, COI upload and expiration tracking, and invoicing by card or ACH. Rental invoices carry a fee of 5% + $0.75, ACH 1.5% capped at $20, and internal bookings are free. See Facility rentals, or the comparisons with Facilitron and SchoolSpace.