Inheriting a house comes with two separate tax questions that get confused constantly, especially in a market like Temecula’s where home values have moved a great deal since many longtime owners first bought. One question is about capital gains tax when you sell. The other is about your ongoing property tax bill if you keep it. They run on entirely different rules.
Step-up in basis, plainly
When you inherit a home, your cost basis, the number the IRS uses to calculate gain when you sell, generally becomes the home’s fair market value on the date the previous owner died, not what they originally paid for it decades ago. This is called a stepped-up basis, and it is one of the more significant, and least understood, features of federal estate tax law. IRS Publication 551, Basis of Assets, covers the general rule, alongside IRS Publication 523, Selling Your Home, for how basis feeds into the gain calculation on a sale.
Why this usually means little or no capital gains tax
If a parent bought a Temecula home for $80,000 in the 1980s and it is worth $700,000 on the date they pass away, your basis as the heir is $700,000, not $80,000. If you sell shortly after for close to that value, your taxable gain is small or nonexistent, even though the home appreciated enormously over the original owner’s lifetime. This is the opposite of how gain works if you had simply been gifted the home while the original owner was alive, in which case you would generally inherit their original, much lower basis instead. The distinction between an inheritance and a lifetime gift matters enormously here, and it is worth confirming which situation actually applies to you before assuming either outcome.
The completely separate system: property tax reassessment
A low capital gains bill on an eventual sale tells you nothing about what your property tax bill will be if you decide to keep the home instead of selling it. Property tax reassessment runs on Proposition 19’s rules, not federal basis rules, and the two systems do not talk to each other. BOE’s Prop 19 page is the authoritative source on how the parent-child exclusion works today.
The parent-child exclusion Prop 19 narrowed
Before Prop 19, a child inheriting a parent’s home could generally keep the parent’s low assessed value regardless of whether they moved in. Since Prop 19 took effect, that exclusion only applies if the child moves into the home as their primary residence within one year of the transfer, and even then, the exclusion only fully applies up to a statutory cap on how much the value can increase above the parent’s factored base year value, an amount that adjusts periodically and was near $1.044 million as of BOE’s most recent published figures. Above that cap, or if the heir does not move in, the home gets reassessed at current market value, which for a home held decades can mean a dramatically higher property tax bill going forward. If you plan to keep an inherited Temecula home rather than sell it, confirm the current cap and filing deadline directly with the Riverside County Assessor before assuming either outcome.
Selling through probate versus a living trust
How quickly you can actually sell an inherited home depends heavily on how it was held. A home in a living trust generally transfers to heirs and can be sold relatively quickly, while a home that has to go through probate follows a court process that typically takes months rather than weeks. How does selling a house in probate work in California walks through that process in detail if the home you inherited is going through the courts rather than a trust.
What to gather before you file anything
Get a formal date-of-death appraisal, or at minimum a well-documented set of comparable sales from around that date, to establish your stepped-up basis clearly. Keep records of any capital improvements made since the date of death, since those add to your basis and reduce taxable gain further. If the property was ever rented out after you inherited it, be aware that any depreciation taken during that period gets recaptured at sale, a wrinkle worth flagging to your CPA specifically. The home value tool can give you a current market read on the property, which is useful both for deciding whether to sell and for cross-checking against your basis documentation.
When more than one sibling inherits the same home
It is common for a home to pass to two or more siblings or heirs jointly rather than to a single person, and each heir’s basis, and their share of any gain, is calculated the same way, off the same date-of-death value, split according to their ownership share. Disagreements among heirs about whether to sell immediately or hold the property are a separate question from the tax mechanics described here, but they are worth resolving early, since a property held by multiple heirs who cannot agree on next steps can sit unsold for far longer than one owned outright by a single person, during which time it still needs insurance, maintenance, and property tax paid.
This is a CPA conversation, not a DIY one
Basis calculations, the interaction between federal capital gains rules and California’s property tax reassessment system, and the specific facts of how the home was titled and transferred all affect the actual numbers enough that this is worth a real conversation with a CPA before you list, not after you close. Capital gains tax on selling a house in California covers the general capital gains framework every California seller faces, which this inherited-property situation builds on rather than replaces.
Common questions
Do I owe capital gains tax if I inherit and sell a house in California?
Usually little to none, because your cost basis in an inherited home generally becomes its fair market value on the date the previous owner died, not what they originally paid. If you sell close to that value, there is often little or no taxable gain.
Do I keep my parents' low property tax rate if I inherit their house?
Only in limited circumstances. Since Prop 19 narrowed the parent-child exclusion, you generally have to move into the home as your primary residence within one year, and the exclusion only applies up to a statutory cap on the increase in value. Otherwise the home is reassessed at current market value.
What is a date-of-death appraisal and do I need one?
It's an appraisal establishing the home's fair market value on the date the previous owner died, and yes, you should get one. It documents your stepped-up basis for tax purposes, which matters if the home has appreciated since that date and you later sell.
