The key is separating each property in your accounting system so you can see profitability individually rather than as one blended number. When you own three or four rentals and only look at combined income and expenses, you have no idea which properties are actually performing and which are dragging down your returns.

In QuickBooks Online, use classes or locations to tag every transaction by property. When an Airbnb payout hits your bank account, assign it to the correct property. When you pay for cleaning, repairs, or supplies, tag that expense to the property it belongs to. This takes a few extra seconds per transaction but gives you a per-property profit and loss statement whenever you need it.

Airbnb payouts require extra attention because what hits your bank is net of Airbnb’s service fee. If a guest paid $500 for a two-night stay, Airbnb might deposit $485 after their cut. Record the gross booking revenue of $500, then record the $15 service fee as an expense. This shows your true top-line revenue and makes it easier to compare performance if you also list on VRBO or take direct bookings with different fee structures.

Track cleaning fees carefully. Some hosts include cleaning in the nightly rate while others charge it separately. Either way, the cleaning expense should hit the same property. If you pass through a $150 cleaning fee to the guest and pay your cleaner $125, that’s $25 in margin you want to see clearly.

Property-specific expenses are straightforward. Repairs, utilities, mortgage interest, property taxes, insurance, HOA fees, and supplies all get tagged to the property they belong to. The harder part is shared expenses. If you pay for a property management software subscription that covers all your rentals, split the cost proportionally. If you buy toilet paper in bulk and distribute it across properties, make a reasonable allocation.

Short-term rental operators in San Diego often struggle with this tracking as they add properties. What worked when you had one rental falls apart with three or four. The monthly bookkeeping discipline becomes more important as you scale because the numbers get messier and the stakes get higher.

Review each property quarterly at minimum. Look at revenue, expenses, net income, and occupancy rate. One property might generate more gross revenue but eat it up in maintenance costs. Another might have lower nightly rates but fewer problems and better margins. You can only make smart decisions about pricing, improvements, or whether to sell if you know the real numbers.

If tracking multiple properties is taking more time than you want to spend, a San Diego bookkeeping service familiar with short-term rentals can handle the monthly categorization and give you clean per-property reports without the busywork.