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True Cost of Willowbrook

HOA + Ada County property tax + homestead exemption + insurance — the complete annual breakdown for a $350,000 home

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All-In Annual Cost — $350,000 Home, Primary Residence, Ada County

ComponentMonthly (est.)Annual (est.)Notes
HOA~$150–$210/mo~$1,800–$2,520/yrEstablished — verify current rate and 5-year history
Ada County property tax (after homestead exemption)~$171/mo~$2,090/yr$350K home; homestead reduces taxable value by $125K; effective ~0.76%
Homeowners insurance~$85–$145/mo~$1,020–$1,740/yrLower premium from lower home value; Garden City inland location
Utilities~$150–$250/mo~$1,800–$3,000/yrIdaho Power rates
State income tax$0 (most retirees)$0Idaho $95,870 married deduction + SS exempt
Total annual housing cost (ex-mortgage)~$6,710–$9,260/yr — lowest all-in cost of any established Boise 55+ community
Idaho Homestead ExemptionThe homestead exemption saves proportionally more at lower home values as a percentage of the bill. On a $350K Willowbrook home, the $125K reduction represents 36% of market value — a larger proportional benefit than on a $575K Cadence home where it represents 22%.
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The Idaho Financial Advantage — Why These Numbers Work

Idaho’s combination of the $95,870 married retirement income deduction (plus Social Security separately exempt), the 50% homestead property tax exemption, and Idaho Power’s low utility rates produces annual housing costs that are substantially below comparable communities in Florida, Texas, and most other major retirement markets. The comparison that resonates most for buyers coming from California: these numbers are often $8,000–$15,000 per year lower than what they were paying in property tax alone in the Bay Area or Los Angeles.

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