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A 25-mile-each-way commute costs $15,240/year — the same monthly weight as $200,928 of mortgage. The cheaper house has to beat that gap.
"Drive till you qualify" prices the house and ignores the drive. Priced fully, a 25-mile-each-way commute runs 12,000 miles a year — $8,040 at the all-in per-mile cost — plus 240 hours of windshield time worth $7,200 at a $30/hour valuation. That's $15,240 annually, $1,270 a month, the same weight as $200,928 of mortgage at 6.5%. So the farther-out house only wins if it's more than $200k cheaper — and over a decade the commute costs $152,400 and a full working-year of hours. This calculator prices your exact commute and puts the mortgage-equivalent next to it.
House hunters and job changers use it to price distance honestly: 25 miles each way is $15,240/yr all-in — the weight of $200,928 of mortgage — so the farther "cheaper" house must beat that gap before it saves anything.
Because fuel is the smallest share of driving cost. The AAA-style full-cost figure bundles depreciation (the big one — every mile literally shortens the car's life and resale), maintenance and tires (roughly 10¢/mi combined), insurance (priced per year but driven by mileage), registration, and finance costs — and lands at 60–70¢/mile for a new sedan, more for trucks and SUVs. The IRS business mileage rate (67¢ for 2026) is built from the same logic, which is why employers reimburse at it. The intuition trap: your brain prices the marginal trip ("just gas") while your bank account pays the average cost. If you genuinely drive an old paid-off EV, your real figure might be 35–45¢ — enter YOUR number, but be honest about depreciation; even EVs die by the mile.
Convert the commute to mortgage-equivalent (this calculator does it) and compare against the PRICE GAP, not the price. Example: the farther house is $120,000 cheaper, but the commute carries the weight of $200,928 of mortgage — the "cheaper" house costs $81k more in total monthly-weight terms, before counting hours. The fair ledger also adds: second-car risk (long commutes often force a second vehicle sooner), the fatigue tax on evenings (unpriced but real — commute time is among the lowest-rated hours in well-being research), and the crash exposure that scales with miles. In the commute's favor: if you'd use the hours for audiobooks/podcasts anyway, discount the time value; if transit instead of driving, price the fare but cut the time value (those hours are semi-usable). And re-run it when your WFH schedule changes — one extra remote day per week cuts everything 20%.
Linearly — the most powerful lever in the whole calculation. Each work-from-home day per week removes 20% of every line: miles, dollars, hours, risk. On the default commute, going from 5 days in-office to 3 saves $6,096/yr and 96 hours. This is also why the "pay cut for remote" question has a real answer: on this commute, a fully remote job is worth $15,240/yr against a fully in-office one — a 5–8% raise in disguise at median incomes, before the time. The reverse negotiation works too: when asked back to the office, the commute cost is the quantified counter. One nuance: occasional commuting costs MORE per mile than daily (the car depreciates on the calendar too), so the true saving of partial WFH is slightly less than linear — but close enough that the linear rule stands.