Second Home True Cost Calculator

Second home typical annual costs: mortgage 12,000, local property tax 3,000 (premium), utilities 2,000, maintenance 3,000, insurance 800 = 20,800/year. Works out 400/week, 57/night. Self-catering equivalent 1,500/week peak — might be cheaper to holiday let.

A worked example

Try the defaults: mortgage of 12,000, local property tax of 3,000, utilities of 2,000, maintenance of 3,000. The tool returns 20,800.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.

Realistic scenario: coastal second home

A property financed with a mortgage of 15,000 annually, subject to local property tax of 4,200 (higher in desirable areas), utilities of 2,800 (heating, water, internet for occasional use), maintenance of 4,500 (salt air, seasonal wear), and insurance of 1,200. Total: 27,700 per year. Spread across 20 weekends per year, that is 1,385 per visit—before any renovation or improvement spending.

What moves the number most

The result responds to Mortgage (annual), local property tax (annual), Utilities (annual), Maintenance (annual), and Insurance (annual). Mortgage payments typically represent 45–55% of the total, followed by maintenance and local property tax. Even small changes to maintenance assumptions (roof work, damp treatment, structural repairs) can shift the annual figure by thousands.

The formula behind this

Sum of annual costs. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.

What the headline rate hides

Lenders quote a rate; what you pay is a blend of that rate, fees, insurance, and any early-repayment penalty built into the product. The figure here isolates the core interest cost so you can compare like-for-like across deals — then add the other costs separately before signing anything.

What this doesn't capture

The figure excludes arrangement fees, valuation costs, legal fees, insurance, and any early-repayment charges — those can add several thousand to the headline cost. Rate changes at renewal for fixed-term deals will shift the picture further. Use this for the core interest/principal math and add the other costs on top.

Common scenarios where this calculator matters

• Comparing the total cost of ownership against renting a similar property for holidays
• Understanding whether a second home is more or less expensive than paying for commercial accommodation over a 12-month period
• Assessing the impact of maintenance spikes (boiler replacement, roof repairs) on the full-year picture
• Planning a multi-year view of ownership costs if rental income is anticipated
• Breaking down a lump annual figure into weekly or nightly equivalents for cost-per-use analysis

What this result does and does not show

What it shows: The calculator estimates the combined annual cost across five major categories: mortgage, tax, utilities, maintenance, and insurance. It models static inputs and returns a simple sum—useful for understanding the scale of annual outgoings and how each component contributes to the total.

What it does not show: Inflation on any of these costs over time. Financing costs if you use savings rather than a mortgage. Any revenue from letting the property. Capital appreciation or depreciation of the property itself. One-off costs such as legal fees, surveys, or renovation work. Seasonal variation in utilities. Regional differences in insurance or tax rates. Tax relief or allowances. Liquidity costs (selling fees, estate agent commissions). This calculator is for educational illustration of annual running costs and does not account for investment growth, tax optimization, or personal circumstances.