Revenue management, answered

Can I charge a guest extra to add nights onto an existing reservation, and how much should the extra night cost?

Yes, you can charge for added nights, and you should price them at current market rate for those dates, not the original booking rate. The guest accepted a price for specific dates; new dates are a new pricing decision entirely.

By Jack Murphy, Head of Revenue Management at UpRev. Running pricing for US vacation rental managers since 2017.

Price the Added Nights at Today's Market Rate

Whatever rate your calendar shows for those dates at the time of the modification request is your starting point. If demand has shifted since the original booking, that shift works in your favor or against it, and you price accordingly. Do not feel obligated to honor the original nightly rate just because the guest is already booked. The extension is a separate transaction in practical terms.

Account for Stay-Pattern Value When Setting the Rate

A single added night can fill a gap that makes the surrounding dates easier to sell, or it can create an awkward orphan gap on the other end. If the extension closes a hard-to-fill gap, you have flexibility to price it at a slight premium. If it creates a new gap, factor that lost opportunity into what you charge. Always think in terms of what the full calendar looks like after the modification, not just the one night in isolation.

Confirm the Modification Through the Booking Channel Correctly

Depending on the platform, a modification request changes the total reservation value and may trigger a new payout calculation or guest-facing fee breakdown. Make sure your client's channel settings allow price-per-night to vary on modifications, and confirm the guest formally accepts the updated total before you treat it as booked. A verbal agreement that never gets confirmed through the platform can create chargeback and dispute exposure.