Depreciation is one of the few parts of owning a rental that works in your favor while you sleep. It is a paper deduction. You are not writing a check for it, yet it lowers the income you pay tax on. We have seen owners run a property for years without ever claiming it, leaving money on the table the whole time. The concept sounds technical, but the core idea is simple, and once you see it on paper it tends to stick.
This is general information, not tax advice. Depreciation has real consequences when you sell, and your situation has details we cannot see. Talk to a tax professional before you act on any of this. What follows is the framework so you walk into that conversation knowing the right questions.
What Depreciation Actually Is
The tax code treats a building as something that wears out over time. A roof ages, systems break down, the structure slowly uses up its useful life. So the code lets you deduct a piece of the building’s value each year to reflect that wear, even though you are not spending cash to do it. That annual deduction is depreciation.
For residential rental property, the IRS sets the recovery period at 27.5 years. That means you spread the depreciable value of the building across 27.5 years and deduct roughly an equal slice each year. Commercial property uses a longer period, but for residential rentals, 27.5 years is the number to remember.
What You Can and Cannot Depreciate
This is where owners get tripped up, so it is worth being precise. You depreciate the building. You do not depreciate the land.
Land does not wear out. The dirt under your rental is the same dirt in 50 years, so the code does not let you depreciate it. Only the structure and certain improvements count. That means before you can calculate anything, you have to split your purchase price into two buckets: the value of the land and the value of the building.
This split matters a lot in California, where land is often a large share of the total price. A property in a high-land-value area might be 40 percent building and 60 percent land, which changes your depreciation meaningfully. People commonly use the county assessor’s allocation between land and improvements as a starting point for that split, though a tax professional can advise on the right method for your situation.
What counts as depreciable
- The building structure itself
- Capital improvements with a useful life beyond a year, such as a new roof or a new HVAC system, which are depreciated on their own schedules
- Certain appliances and fixtures, often on shorter recovery periods
Routine repairs are a different animal. Fixing a leak or patching drywall is generally a current expense you deduct in full that year, not something you depreciate. The line between a repair and an improvement matters, and it is a good thing to confirm with your tax professional.
How Depreciation Shelters Income
Here is the part that makes it powerful. Rental income is taxable, but depreciation is a deduction against that income that costs you no cash. So it can shelter rental profit, sometimes turning a property that is cash-flow positive into one that shows little or no taxable income on paper.
That gap between the cash you actually pocket and the income you report is the whole point. You collect rent, the property pays its way, and depreciation quietly reduces what the IRS counts as your profit.
A worked example
These numbers are illustrative, meant to show the mechanics, not a real return. Say you buy a single-family rental in Southern California for $550,000 plus $10,000 in qualifying closing costs, for a depreciable basis starting point of $560,000.
You determine that the land is worth $210,000 and the building is worth $350,000. You can only depreciate the building, so your depreciable basis is $350,000.
Divide that by 27.5 years and you get an annual depreciation deduction of about $12,727.
Now suppose that property collects $42,000 in rent for the year, and after the mortgage interest, property tax, insurance, maintenance, and management you have $14,000 of net income before depreciation. Apply the $12,727 depreciation deduction and your taxable rental income drops to roughly $1,273. You still pocketed real cash from the property, but on paper the taxable income is small. That is depreciation doing its job.
Depreciation is one of several tax advantages that come with holding rental property. For the wider view, see our guide to tax benefits for California landlords, which puts depreciation alongside the other deductions you can claim.
The Catch: Depreciation Recapture
Depreciation is not free money, it is deferred. When you sell, the IRS wants to settle up on the deductions you took. This is called depreciation recapture.
The basic idea is this. Every year you depreciate the building, you lower your cost basis in the property. A lower basis means a larger gain when you sell. On top of that, the portion of your gain that comes from the depreciation you claimed is taxed at a specific recapture rate, which has historically been higher than the long-term capital gains rate. The rules and rates here are detailed and change, so this is exactly the kind of number to confirm with a professional before you sell.
Here is the part owners miss. Recapture can apply based on the depreciation you were allowed to take, whether or not you actually took it. Skipping depreciation to avoid recapture later usually does not work and just means you lost the deductions along the way. That is a strong reason to claim it correctly from year one.
How recapture connects to your exit strategy
Because selling triggers both capital gains and depreciation recapture, the exit deserves as much planning as the purchase. One common tool for deferring these taxes is a 1031 exchange, which lets you roll the gain into another investment property under specific rules. We cover how that works in our guide to the 1031 exchange and capital gains in California. Whether it fits your situation is a decision to make with your tax advisor, but it is worth knowing the option exists before you sell.
Operator’s note
The mistake we see most is owners treating depreciation as an afterthought. They run the property for years, never set up the land-versus-building split properly, and then scramble at sale time. The better habit is to get the basis and the split right at purchase, claim depreciation every year, and keep clean records of every capital improvement with its own schedule. When you sell, that paperwork is what lets your tax professional calculate recapture accurately and plan around it. Boring on the front end, valuable on the back end.
The Bottom Line
Depreciation lets you deduct the wearing out of your building over 27.5 years for a residential rental, even though you spend no cash to claim it. You depreciate the structure and qualifying improvements, never the land, so splitting your purchase price correctly is the first step. Done right, it shelters rental income and can shrink your taxable profit while you still collect real cash. The trade-off comes at sale, where depreciation recapture settles the account, which makes claiming it correctly and planning your exit both important.
This is general information and not tax advice. The specifics depend on your situation, so work with a qualified tax professional before you act.
If you are buying, holding, or planning to sell a California rental and want a clear read on how the numbers work over the life of the hold, reach out to us. We are glad to talk it through.