How much does a home really cost over 25 years?

A $400K resale home costs $318K-$506K more over 25 years than a comparable new build when you account for maintenance escalation, insurance compounding at 8-10% CAGR, capital expenditure cycles (roof, HVAC, plumbing), and the opportunity cost of repair spending. The Resale Trap models every cost year by year using institutional data.

What is PMI and when do I have to pay it?

Private Mortgage Insurance (PMI) is required when your down payment is less than 20% of the purchase price. PMI typically costs 0.5% to 1% of the loan amount per year. It can be removed once you reach 20% equity through payments or appreciation, but it adds thousands in the early years of ownership.

Why does home age affect maintenance costs?

Older homes have aging roofing, plumbing, HVAC, electrical, and structural components that fail on predictable cycles. A 20-year-old home may need a new roof ($12K-$30K), HVAC ($8K-$15K), and water heater ($2K-$4K) within the first 5 years of purchase. A new build starts all cycles at zero, deferring major replacements 15-25 years.

What is the opportunity cost of a down payment?

The opportunity cost is what your down payment would have earned if invested in the stock market instead. A $80K down payment invested at 7% for 25 years grows to approximately $434K. That $354K in missed growth is a real cost of buying that most calculators ignore.

Do new builds really have lower insurance premiums?

Yes. New construction typically receives a 10-20% insurance discount because modern building codes, new roofing materials, updated electrical and plumbing, and impact-resistant features reduce claim risk. Over 25 years with insurance compounding at 8% CAGR, this discount saves $50K-$100K+ in total premiums.

Interactive Tool

True Cost of Homeownership Calculator

See the real 25-year cost — including the expenses most buyers never model. New build vs resale, side by side.

Your Scenario

Purchase Price

$400,000

Down Payment (%)

10%

Down payment: $40,000

Mortgage Rate (%)

6.50%

Property Tax Rate (%)

1.10%

Monthly HOA ($)

Home Age at Purchase (years)

20 yrs

New build comparison always uses age 0

Annual Home Insurance ($)

$2,500

25-Year Total Cost

New Build $0

Resale Home $0

Resale Premium (Extra Cost) $0

Cost Breakdown

Mortgage Payments

New: $0 Resale: $0

Property Tax (25 yr)

New: $0 Resale: $0

Insurance (25 yr)

New: $0 Resale: $0

Maintenance (25 yr)

New: $0 Resale: $0

PMI

New: $0 Resale: $0

Closing Costs

New: $0 Resale: $0

HOA (25 yr)

New: $0 Resale: $0

Opportunity Cost

New: $0 Resale: $0

Simplified model. See Chapter 5 of The Resale Trap for the full 25-year cost methodology with all assumptions, data sources, and sensitivity analysis across all 50 states.

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See the Full 50-State Breakdown

This calculator is a simplified model. The Resale Trap runs the complete 25-year analysis across all 50 states using institutional data from RS Means, FHFA, BLS, Harvard JCHS, and NAIC — with full sensitivity analysis and downloadable methodology.

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