What It Actually Costs to Raise a Family South of Seattle: Our Real Auburn-Area Numbers
I exported two months of our bank transactions instead of quoting averages. Here's the whole thing.
Every 'cost of living near Seattle' article is stock photos and city averages. This is our actual household — mortgage, groceries, gas, cars, and the insurance line I count as savings — pulled straight from the bank.
Quick honesty note before the numbers: this is our real life, not financial advice. Every figure below comes from two months of our own bank exports — June 2026 (a full month) and July 2026 (through the 28th, so a few late-month charges are still missing). It’s one household account, and I’ve rounded our income. Tax rates and fees change; I’ve flagged the ones worth verifying yourself.

We don’t live in Seattle
Every “cost of living in Seattle” article you’ve read was written about a neighborhood we can’t afford. Capitol Hill, Ballard, a Craftsman with a view — sure, if you want to hand your whole paycheck to a landlord.
We live south of the city, in the Auburn area. It’s the part of the map where a software salary and a mortgage can actually coexist, where families quietly move when the “Seattle dream” runs into the Seattle price tag. Longer commute, smaller zip-code clout, an actual yard. That trade is the whole story, and nobody writes it down with real numbers.
So I did. I exported two months of transactions and I’m going to walk you through the big rocks — no hype, just math.
The mortgage that eats first
Everything starts here: $4,347 a month to house mortgage, same to the penny both months.
That’s the number that makes or breaks a household budget down here, and it’s the honest reason we’re in Auburn and not King County’s trendier corners. On roughly $8,000/month coming into the account, the mortgage alone is more than half of it before we’ve bought a single grocery. When people ask why we didn’t stretch for something closer in, this is the answer — a bigger number here would’ve owned us instead of the other way around.
(If you want to see what a payment does to your own budget, I lean on our mortgage calculator constantly — it’s the tool I wish I’d used before we bought, not after.)
The bills nobody warns transplants about
Here’s the recurring utility stack, and a couple of these surprised me when we moved:
- Puget Sound Energy (electric + gas): $236–$254/month. One provider for both, and in winter it climbs.
- Two separate city utility bills. We sit right on a city line, so we get billed by two municipalities — one runs about $116/month, the other about $65. Water, sewer, and the stuff you never think about until you own the pipes.
- Comcast (internet): $50/month, and I fight to keep it there.
Call the recurring core about $466/month. But utilities have a nasty habit of ambushing you: in June a garbage bill of about $116 and a $275 insurance premium landed on top, and suddenly the “boring” category wasn’t boring. That’s the real lesson — the monthly number lies a little, because the quarterly and annual stuff hides inside it.
Feeding four humans: about $1,000 a month
Groceries were $956 in June and $1,016 in July — call it a grand a month, and no, I’m not proud of it, but I’m not going to pretend it’s $500 either.
The receipts tell you exactly who we are: Costco for the big hauls, then H Mart, Uwajimaya, and Trader Joe’s for everything Costco doesn’t do.
We know we could shave this down. We mostly don’t. When you both work and there are small kids, some of that grocery bill is buying back time, and I’ve made peace with that trade even though the spreadsheet side of my brain twitches.
The cars: the mortgage’s quiet sidekick
One car loan: $436/month, steady. That part’s simple.
The part that isn’t simple — and the one that gets every Washington transplant — is the annual tab renewal. In June, the WA Department of Licensing took $752 in one hit for registration. That’s not a monthly line you can plan around; it’s a once-a-year gut-punch that shows up and wrecks whatever cushion you thought you had. Nobody tells you about it before you move here. Now someone has.
Add gas — $220 in June, mostly Costco Gas, with July still filling in — and transportation is the second-biggest category in our life after the roof.
(Thinking about a car payment? Run it through the car-payment calculator before the dealer runs it through you.)
The “savings” line that’s actually insurance — and why I keep it that way
Here’s where a finance blogger is supposed to flinch, so let me get ahead of it: the biggest thing I’d call “savings” in these two months isn’t a brokerage deposit. It’s $594/month to New York Life — whole life insurance.
I know the internet’s verdict on whole life. “Buy term, invest the difference” is practically a commandment in personal finance, and honestly, the pure-math case for it is strong — a purist would tell me to swap this for cheap term and dump the rest into an index fund. Reasonable people land there, and I won’t pretend they’re wrong on the returns.
But I count this as savings on purpose, and here’s my reasoning: it does two jobs at once. There’s cash value building inside it that I can actually borrow against if we’re ever underwater — a floor under the family that a term policy doesn’t give me. And if I’m gone, it covers the people I’d be leaving behind.
(If you want to read more about life insurance? Check out this article)
Meanwhile the “real” investing was thin and honest: $600 per month That’s the confession — the guy who writes about options trading put more into a life-insurance premium than into the market these two months. I’d rather tell you that than perform a portfolio I didn’t fund.
The Washington tax twist (the part that ties back to my trading)
The bumper-sticker version of moving to Washington is no state income tax, and that part’s real — my salary and my wife’s owe the state nothing on the income line. That’s a genuine advantage, especially against California.
But the state gets its money elsewhere, and you feel it at the register: Auburn’s combined sales tax is about 10.4% as of 2026 — among the highest in the state. (Verify the current rate for your exact address before quoting it; it drifts.) Every non-grocery purchase quietly pays that. One kind mercy: groceries are exempt from Washington sales tax, which softens that thousand-dollar food bill a little.
And because I trade on the side, people ask about the Washington capital gains tax. Yes, it exists — 7% on long-term gains, but only on gains above roughly $260,000 in a single year (the exact threshold is inflation-adjusted and worth checking — sources disagree on the 2026 figure). For a side-trader doing cash-secured puts on a software salary, it’s not in the picture. It’s a high-net-worth tax dressed up as something scarier. Worth knowing exists; not worth losing sleep over unless you’re selling a company.
Adding it up — with the caveats up front
The non-negotiable core — mortgage, car, recurring utilities, groceries, gas, and the insurance-savings line — runs right around $7,000 a month. On ~$8,000 of household income into this account, that leaves maybe a thousand dollars for dining out, the kids’ stuff, personal care, and everything else life invoices you for. In a month where a $752 tab bill or a $275 insurance premium lands, that cushion is just gone.
Now the honesty section, because a budget without caveats is a lie:
- This is very close to AVG per month.
- It’s one household account. If your picture of a family’s finances requires every last dollar across every account, this isn’t that — it’s the shared-bills reality, which is the part most people actually want to compare against.
- The income number is rounded. I’m showing you every expense in real dollars; I’m keeping the paycheck fuzzy on purpose.
So is south-of-Seattle “affordable”? Compared to a house closer in, absolutely — that mortgage would be a different animal ten miles north. Compared to most of the country, we’re paying a Seattle-area premium for a not-Seattle zip code. That’s the honest trade: we bought breathing room with a commute and a longer drive to the fun stuff, and for a family at this stage, I’d make the deal again.
If you’re eyeing the move down here, budget for the tab renewal, the two city bills, and a grocery run that costs more than you think. The rest, you can live with.
This is our real household, not a recommendation for yours — and definitely not financial advice. Numbers are pulled from two months of our own transactions, income rounded, single account. Tax rates, fees, and offers change; verify anything time-sensitive before you act on it. If whole life vs. term is your question, that’s a real debate with smart people on both sides — do your own math with your own family in the picture.
*** THE NUMBERS ***
- Mortgage (Rocket) $4,347/mo
- Groceries ~$1,000/mo
- Insurance / savings $594/mo
- Utilities (recurring) ~$466/mo
- Car payment $436/mo
- Gas ~$150/mo
Hebojago is for information only and is not investment, tax, or legal advice. Rates and offers change — verify terms with the provider before acting.

