Second Home True Cost Calculator

Second home typical annual costs: mortgage 12,000, local property tax 3,000, utilities 2,000, maintenance 3,000, insurance 800 = 20,800/year. That works out to about 400/week or 57/night. Comparing the nightly figure against typical short-let or holiday-rental rates in the area is one way to test whether ownership beats renting on a use-by-use basis.

A worked example

With 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). For most setups mortgage is the largest line, followed by maintenance and local property tax — but the proportions depend entirely on the figures you enter. 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 this doesn't capture

The figure excludes one-off costs (purchase fees, legal fees, surveys, renovation work), any rental income from letting the property, capital appreciation or depreciation, inflation on the five recurring costs, and the opportunity cost of capital deployed. Mortgage and insurance are included if you've entered them; if you own outright or self-insure, leave those inputs at zero.

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: Seasonal swings within a year (the five inputs are treated as annual totals). Regional differences in tax or insurance rates compared with what you've entered. Tax relief or allowances that may reduce the local property tax bill. One-off costs such as legal fees, surveys, or renovation work. Liquidity costs at sale (selling fees, estate agent commissions). Personal tax circumstances and investment-growth opportunities for capital that's tied up in the property. The figure is annual running cost only, not a wealth-impact projection.