Short-term rental hosts also earned 37.5% more revenue than in 2020 and ADRs were able to grow by another 12.3%. Speculated reasons being a scarcity of rentals in high demand pushed prices higher, the flexibility of remote work allowed more travel outside of the typical seasons, and the recovery of demand in large cities allowed hosts to increase rates after they dropped in 2020.
Traditionally, supply follows demand, and that has also been the case throughout 2021. After a brief drop in available listings at the start of the pandemic, significant investment has been made in short-term rentals in rural areas and small/midsize cities. Throughout 2021, these areas increased supply by more than 11% over 2020 levels and are projected to see even more gains in 2022.
With numbers increasing in comparison to pre-pandemic numbers, it's safe to say people want to dive back into living with travel despite the emergence of the omicron variant. Coming into 2022, both the first and second quarters look very promising. After a slow start in January, new bookings surged in March and April as guests scrambled to book spring and summer travel. Short-term rental nights stayed jumped by 22.5% over 2020 and 2.7% over 2019. For the first quarter of 2022, nights booked are 17% higher than in 2019 and 72% higher than at the start of 2021.
With a booking pace 37% higher than 2019 and 88% higher than 2021. This is more than likely a response to the scarcity of available listings in 2021 as occupancy hit all-time highs, leading guests to book even further in advance. Our current outlook calls for a 14.1% increase in demand in 2022 year over year. Guests are also paying a premium to reserve top properties for both spring break and summer travel. ADRs are up 21% in Q1 2022 over 2021 for properties already booked and 7% higher in Q2.
Expect to see more unique properties in off-the-beaten-path locations providing one-of-a-kind experiences that will accommodate guests seeking an alternative to traditional lodging options. While many aspects of the short-term rental market have yet to recover, the whole of the industry should continue to outperform as we head further into 2022.