How to avoid double bookings at your homestay — when you sell rooms on several sites at once

TL;DR

• • Why it happens: several apps, calendars that update hours apart, and bookings kept in a notebook or a phone.
• • One calendar is the truth. Nothing is confirmed until it is there.
• • Calendar links (iCal) share blocked dates only and refresh every few hours; Airbnb says every 3 hours.
• • The five-minute rule: add the booking, then close the other apps.
• • SitesPlaced sells each room-night only once, including bookings you add by hand. There is no automatic sync with the apps yet.

Why double bookings happen

A room in a homestay is often for sale in several places at once: Airbnb, Booking.com, maybe MakeMyTrip or Goibibo, your own website, and your phone. Each place keeps its own calendar. A double booking is simply two of those calendars saying “free” for the same room on the same night at the same moment. The common causes:

• 1. Lag between apps. A guest books your Deodar room on Booking.com at 9 p.m. Airbnb does not find out until its next calendar check, and another guest books the same room there at 10 p.m.
• 2. Phone and WhatsApp bookings in a notebook. You say yes to a regular on the phone and mean to update the apps later. Later does not come before someone else books.
• 3. More than one person taking bookings. You take a call, your brother answers WhatsApp, your mother says yes to a neighbour’s relatives. Nobody checks with anyone.
• 4. Listings that do not match rooms. Two “identical” rooms listed as one listing on one app and as two on another, so one app thinks a room is free when it is not.
• 5. Closed dates that never reach the apps. The room is closed for painting on your own calendar but still open on Booking.com.

One calendar as the source of truth

“Source of truth” means there is one calendar that is always right, and every other calendar is copied from it. If the apps and your main calendar disagree, the main calendar wins and you fix the apps. It can be any calendar that shows each physical room on each date and that everyone who takes bookings can open on their phone. A paper register at the desk fails the second test.

Two rules make it work. First, one owner: a single person is responsible for the calendar being right, even if others can add to it. Second, nothing is confirmed until it is on the calendar. Not “I’ll add it tonight”: while the guest is still on the phone.

What calendar links (iCal) can and cannot do

iCal is a standard calendar-link format (the link ends in .ics). Airbnb, Booking.com and many other sites let you copy one site’s calendar link into another, so each site blocks the nights the other has sold. It is free and worth setting up between the apps, but know its limits:

• It only carries blocked dates. No guest name, no price, no number of guests, no room type. It says “these nights are taken”, nothing more.
• It is not instant. Airbnb’s help centre (October 2026) says imported calendars update every 3 hours; you can press Refresh sooner, but only a limited number of times. Other sites set their own timing. Two bookings inside that gap collide.
• It works listing by listing. One link per listing, so it only helps if each listing is exactly one physical room, or the same group of rooms, on every site.
• Cancellations lag too. A cancelled night can stay blocked on the other site until its next check, and Airbnb notes that nights you block elsewhere may not always carry over.

The next step up is a channel manager: paid software that updates your free rooms and prices on several apps at once through each app’s own connection. It suits properties with many rooms and bookings every day. For a homestay with a handful of rooms, a main calendar and the routine below usually do the job without the monthly bill.

The five-minute routine

Three habits catch what the routine misses. Every morning, look at the next seven days on the main calendar and on each app; it takes two minutes and finds mismatches before guests do. Map every app listing to the same physical room, by name, on every site. And on your busiest dates (long weekends, Christmas–New Year, Diwali), consider closing the apps for your last free room and selling it only by phone or on your own site, where you control the calendar.

What SitesPlaced does, and what it doesn’t

On a SitesPlaced homestay site, each room-night can be sold only once. The moment a booking is on the calendar, your website stops offering that room for those nights, and you cannot add a second booking for it by hand either. If you confirm bookings yourself, a requested room is held for the number of hours you choose, so nobody else books it while you decide.

The Calendar tab shows every room against every date. Tap to add a booking and choose where it came from (Phone call, WhatsApp, Walk-in, Airbnb, Booking.com or Somewhere else), or close a room for some nights with a note such as “Painting” or “Booked on Airbnb”. New website bookings reach you by email and as a push notification on the SitesPlaced phone app, so you can close those nights on the apps straight away.

What it does not do yet: there is no automatic sync with Airbnb, Booking.com, MakeMyTrip or Goibibo, and no calendar link to import or export. App bookings are added by hand, and you close website bookings on the apps yourself. That makes SitesPlaced a good main calendar (one place, every room, every source), with the five-minute rule doing the job of the sync. More on the booking side is on the free booking engine page.

If it happens anyway

Call the guest who booked second, today, not the evening before arrival. Apologise without excuses. Offer a similar or better room at a nearby stay you trust, and pay any difference yourself; keep two or three neighbours’ numbers for exactly this. Refund anything they paid in full if they prefer. If the booking came through an app, read its host cancellation rules before you cancel, because apps can charge hosts for cancelling or lower their ranking. Then work out which step failed and fix that step, not just that booking.

Frequently asked questions