I've saved thousands of dollars and stayed all over the US for free by house and cat sitting - here's how I do it

Travelling as a house and cat sitter also has other less obvious money-saving benefits. The people who I've sat for have often offered to pick me up from the airport, and if they return home before I head off, they've been more than happy to give me a ride back to catch my flight. This saves me between $20 and $40 for each ride to or from the airport, and probably close to $800 total over the two years that I've been house sitting.

Some homeowners have also generously loaned me their public transport pass. In Boston, a younger couple said I was welcome to use their MBTA monthly pass while caring for their two Persian cats. MBTA subway fares cost $2.90 each way, so I saved between $10 and $20 on any given day, and approximately $280 in train fares over the two weeks I cat sat. Thanks to them, I was able to explore more parts of the city without worrying about a costly commute.

The young Boston couple also encouraged me to eat anything and everything in the house without having to replace it. I've found it quite commonplace for homeowners to say 'help yourself to the pantry,' others have had very impressive vegetable gardens that I've been welcome to harvest and use.

I had a house and cat sit in Austin in July of 2019, and it came with an unexpected $100 Whole Foods gift card. I thought the gift card would've been for $10 or $20 at most. I was happily surprised when I went to pay for my mid-morning snack at the flagship store and the cashier told me there was still $90 left to use, which meant the cost of my groceries was covered for the entire sit. The Austin couple even brought along a vegetarian taco for me to try when we met at the airport — they've been the most generous homeowners yet. It just goes to show how appreciative some people are to have you care for their home and pets. Otherwise, I usually spend between $10 and $20 each day on groceries — mostly fresh fruit and baked goods — as well as trying out local cafes and restaurants.

House and cat sitting around America has saved me quite a bit of money on accommodation. But what about insurance? It starts to add up when you're gone for two months at a time. As an Australian citizen, I usually get my insurance through Australian providers like RACQ or Budget Direct, as I'd much rather pay a precautionary $200 AUD than potentially be billed for an emergency later. I've seen World Nomads travel insurance mentioned a lot on Facebook travel groups, but I can't vouch for it myself. If you're looking for travel insurance options, Finder has a good comparison tool for those who like to shop around.

Transport between cities isn't cheap either. Budget airline Southwest has become my go-to because their already competitively prices include two checked bags. But if you're prepared to wake up early or travel overnight, travelling by bus can be very inexpensive. I've taken advantage of Megabus's super cheap fares once or twice, but I usually prefer Greyhound because they offer routes to less touristy places, like Pittsburgh, for example. Occasionally, you may also find better deals on Amtrak. When I went from Birmingham to New Orleans, I chose to ride Amtrak as it cost me only $38, whereas the bus cost $77.

Depending on the house, you may also want to rent a car. While a car hasn't been necessary for most of the house sits I've done, it makes getting around a lot easier in smaller cities and towns easier. For example, a sit that I accepted in Boulder, CO would've been nearly impossible to do without a car as I was staying on top of a mountain where the public buses did not go. I rented a small car from Alamo at Denver Airport — Alamo has always been the cheapest car rental option for me — and it cost me about $350 for 10 or so days. Along with gas for day trips and several tolls, my car expenses for that probably came to about $550 total.

A free home can be hard to say "no" to, but if you do choose to become a house or pet sitter, be aware of these potential expenses that you may encounter.

Whether overnight or for several weeks, or caring for a cat in an apartment or for a farm complete with cows, chicken, sheep and pigs, I believed there's a perfect house and pet sitting gig for everyone. Despite some of the other costs — like insurance and airfares — house and cat sitting around the US has proven to be more than just a free place to stay. I've stayed in some truly unique homes in amazing neighborhoods, I've met wonderful people and been afforded the opportunity to connect with their pets and live just like they do, for a fraction of the cost.

Madolline Gourley is a 29-year-old traveler and writer from Brisbane, Australia. Read more about her cat sitting travels on her blog.