Selling an Inherited Long Beach Home With an ADU — Probate, Tax Step-Up, and What to Do About the Tenant
You inherited Mom's house off Atlantic, or your dad's bungalow near Bixby Knolls, and there's an ADU in the back. Maybe your aunt has been living in it rent-free for six years. Maybe there's a Section 8 tenant you've never met. Maybe it's just sitting empty with somebody's stuff still in it. You're trying to grieve, you're trying to figure out what your siblings want, and a stack of mail keeps growing on the kitchen counter — property tax notices, utility bills, a letter from someone who wants to buy the place "as-is, all cash, today."
Take a breath. There's an order of operations here, and following it in the right sequence saves heirs in Long Beach tens of thousands of dollars in taxes, repair costs, and legal fees. I'm Dylan Serna — I'm an ADU-specialist agent in Long Beach and Orange County, and I work with heirs and executors a few times a month. This post is the conversation I have at every kitchen table, written down. Read it once, share it with your siblings, then call your estate attorney. Here's where to start.
Step 1: Probate or Trust? Different Path, Different Timeline
The single biggest variable in your timeline is whether your parent had a revocable living trust or just a will (or nothing at all). They look similar on paper. They are not the same thing in practice.
Trust Administration — No Court Needed
If the property was titled in the name of a trust, you skip probate entirely. The successor trustee (often you) can sell the home as soon as practical — sometimes within 30-60 days of getting a death certificate, EIN for the trust, and a trust certification. No judge, no court filings, no four-month creditor window. This is the fast path.
Full Probate — 6 to 12 Months in LA County
If there's a will but no trust, or no estate plan at all, the property goes through probate in LA County Superior Court. Realistically, that's 6-12 months from filing the petition to final distribution, sometimes longer if there are creditor claims or sibling disputes. You can sell during probate — it's called a probate sale, and it requires court confirmation in many cases (the "overbid" auction you may have heard about). I've coordinated several of these in Long Beach; they're not scary, but they take a specialist team.
Small Estate / Summary Procedures
California Probate Code allows simplified procedures for small estates. As of 2026, the threshold for real property transferred via affidavit (Probate Code 13200) is around $208,850, and the personal property small-estate affidavit threshold (Probate Code 13100) sits near $184,500 — these numbers are inflation-adjusted every three years, so verify the exact current figure with your attorney. Almost no Long Beach home with an ADU comes in under $208K, so you're usually looking at full probate or a Heggstad petition if the property was supposed to be in the trust but never got retitled.
Bottom line: Before you do anything else, find out which path you're on. Your timeline, your tax picture, and your selling options all flow from that one answer.
Step 2: The Step-Up in Basis Is Your Best Friend (Don't Mess It Up)
This is the single most valuable thing in this whole post. Pay attention.
What Step-Up Actually Means
When your parent bought that Long Beach house in 1987 for $185,000, that's their cost basis. If they sold it during their lifetime for $1.1M, they'd owe capital gains tax on roughly $915K of appreciation (after exclusions). That's a six-figure tax bill.
But they didn't sell. They died owning it. Under IRS Publication 551 and IRC Section 1014, the basis steps up to fair market value as of the date of death. So if the house was worth $1.1M on the day Mom passed, your new basis is $1.1M. If you sell it three months later for $1.1M, your taxable gain is $0.
That's not a loophole. That's the law. And it's why heirs who sell within a year or two of inheriting almost never owe capital gains tax on a California home.
Get a Retroactive Appraisal — Now
Here's where heirs mess this up: they don't document the date-of-death value, and the IRS later asks "prove it." You want a retroactive appraisal from a licensed appraiser, dated as of the date of death, in writing, kept in your files forever. Cost: $500-$800. Value: priceless if you ever get audited or if the sale takes longer than expected and the market moves.
If you want a deeper dive on how appraisers and buyers value these properties, I wrote a full breakdown on how a home with an ADU is valued when you sell.
Step 3: Dealing With the Tenant in the ADU
This is the part that keeps heirs up at night. Let's separate it into two scenarios.
Scenario A: A Family Member Lives in the ADU
Your cousin. Your sister-in-law. Your dad's old friend from the union. They've been in the ADU for years, paying nothing or $400/month under the table. Now you need to sell.
This is hard. Be kind but be clear, and put it in writing. A short letter: "We love you. We're selling the property by [date]. We'd like to help you find your next place. Here's the timeline." Even with family — especially with family — you need a paper trail. A handshake agreement and an unwritten move-out date is how lawsuits start.
If they've been there long enough to have established residency (and in California, that can happen quickly), they may have legal tenant protections regardless of whether they're family. Talk to a landlord-tenant attorney before you give any notice.
Scenario B: A Non-Family Tenant
Now you're in California Tenant Protection Act (AB 1482) territory, plus Long Beach's local just-cause ordinance. Key points for 2026:
60-day notice required if the tenant has lived there a year or more (30 days if less).
Just cause required to terminate — "owner move-in" and "withdrawal from rental market" are options, but each has rules and relocation-payment requirements.
Relocation assistance in Long Beach can be one to three months' rent, depending on the tenant's circumstances.
Section 8 tenants have additional procedural protections through the housing authority.
Check the City of Long Beach tenant protection page (longbeach.gov, search "tenant protection") for current relocation amounts and forms — they update annually.
Sell Occupied or Sell Vacant?
This is a real question, not a rhetorical one. I've written a full post on the vacant vs occupied ADU sale tradeoff, but the short version:
Vacant ADU typically sells for 5-15% more because the buyer pool widens (owner-occupants and FHA buyers come back into play, and inspections are easier).
Occupied ADU with a paying tenant on a documented lease attracts investors who want immediate cash flow. Lower price, faster close, fewer contingencies.
There's no universally right answer. It depends on the rent the tenant is paying (if it's near market, occupied isn't a big discount; if it's $400/month for a 1BR, the discount is real), how confrontation-tolerant the heirs are, and how fast you need to close.
Step 4: Repairs, Cleanout, and What Not to Spend Money On
The biggest mistake I see heirs make: they spend $40,000 fixing up a house that needed $8,000 of fixes, and they spend it on the wrong things.
What's Actually Worth Doing
Cleanout. A junk-removal company costs $1,500-$4,000. Do this first. You cannot stage, photograph, or show a house full of 30 years of memories.
Curb appeal. Mow, edge, mulch, paint the front door, replace the porch light. Maybe $1,500 for an enormous return.
Main house cosmetics. Wall paint in neutral colors, deep clean carpets or refinish floors if they're trashed, replace any obviously broken light fixtures.
Targeted safety items. Smoke and CO detectors, GFCI outlets in kitchens/baths, water heater straps. These come up on inspection regardless.
What's Almost Never Worth Doing
Renovating the ADU. Buyers want the ADU as a rental-income unit, and they have their own preferences. Resist the urge.
New kitchens. Unless the existing kitchen is non-functional, you'll rarely recoup the cost on a probate timeline.
Permitting old work. If the ADU was permitted, great. If it wasn't, retroactively permitting it during a probate sale is a six-month rabbit hole. Disclose, price accordingly, and let the buyer decide. The California HCD ADU page outlines current state law if you're curious about pathways.
If the property has been sitting and a previous listing didn't sell, I sometimes write a post-mortem for heirs on what went wrong — that pattern is the subject of my expired listing recovery post.
Step 5: Pricing and Listing — The ADU Changes the Buyer Pool
A standard Long Beach SFR sells to one type of buyer: an owner-occupant, often a first-time buyer or a move-up family. A Long Beach SFR with an ADU sells to three distinct buyer pools, and you market to all of them differently.
Buyer Pool 1: Investors
Cash, fast close, lower offer. They run cap-rate math. Your job: present a clean rent roll, current leases, P&L if available, and Long Beach-specific rent comparables.
Buyer Pool 2: Multi-Generational Families
Adult kids housing aging parents. Aging parents housing adult kids. They pay the most and emotionally connect to the floor plan. Your job: photograph and stage the ADU as livable, comfortable, and private.
Buyer Pool 3: FHA Buyers Using Rental Income to Qualify
This is the secret sauce. FHA allows buyers to count 75% of documented ADU rental income toward their qualifying ratios. That puts a $1.1M Long Beach property within reach for buyers who couldn't touch a $1.1M home without the ADU. Your job: have leases, rent comps, and proof-of-rent ready for their lender on day one.
For a current sense of pricing and absorption rates, see my Long Beach April 2026 market update.
What If There Are Multiple Heirs Who Disagree?
Three siblings. One wants to sell now. One wants to rent it out and split the income. One wants to move in. This is more common than you'd think.
Voluntary Resolution
Always try this first. A neutral mediator or the estate attorney can usually get to a workable answer in one or two meetings. Common landing spots:
Buyout. One sibling refinances and pays the others their share at appraised value.
Delayed sale. Hold for 12-24 months with a written agreement on expense splits and a firm sunset date.
Sell now, split now. Cleanest, hardest emotionally.
Partition Action — The Nuclear Option
If you can't agree, any co-owner can file a partition action and force a sale through the court. California's partition statute was reformed in 2022 (the Partition of Real Property Act) to favor buyout options before forced sale. Costs $15K-$50K in legal fees, takes 6-12 months, and burns family relationships in ways that don't heal. Avoid if humanly possible.
How I Help
I work with heirs and executors on probate and trust sales across Long Beach and Orange County. I coordinate with your estate attorney, your CPA, and any landlord-tenant counsel. I bring an appraiser who does retroactive date-of-death valuations. I handle the tenant communication so you don't have to.
Free 30-minute probate sale consult — no pressure, no listing pitch on the first call. We'll map out your specific situation, identify the next three things to do, and you decide whether you want help.
Email me at dylanjserna@gmail.com or visit adurealtor.net/long-beach to schedule.
Mini-FAQ
How long after my parent's death do I have to sell to get the step-up benefit?
There's no deadline on the step-up itself — your basis is locked at date-of-death value forever. The practical issue is that if you hold for years and the market rises, new appreciation above that stepped-up basis is taxable. Most heirs who plan to sell do it within 12-18 months.
Do I have to evict the tenant before I can list the property?
No. You can list and sell with a tenant in place. You just need accurate disclosures, current lease documents, and a buyer who's comfortable with an occupied ADU (often an investor). Selling vacant typically nets 5-15% more — run the math both ways before deciding.
What's the property tax situation in California after I inherit?
Proposition 19 (effective 2021) significantly limited the parent-child exclusion. If you don't move into the property as your primary residence within one year, the property gets reassessed to current market value, which usually means a much higher property tax bill. If you're selling within a year, this matters less, but talk to the assessor's office.
Can I sell during probate, or do I have to wait until it closes?
You can sell during probate. It's called a probate sale, and depending on the executor's authority (full or limited under the Independent Administration of Estates Act), it may or may not require court confirmation. An agent who's done these before is worth their weight in gold here.
What if the ADU isn't permitted?
Disclose it, price accordingly, and let the buyer decide whether to permit it post-close. Trying to retroactively permit during a probate timeline almost never works. State law has gotten more ADU-friendly under recent HCD guidance, but Long Beach's review process still takes months.
