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Property appreciation calculator

The future value or past growth of a home, with official UK House Price Index figures and every step shown.

Property appreciation calculator

What do you want to work out?

What the property would sell for today: a valuation or a recent offer.

£

A whole number, from 1 to 50.

Base the yearly change on

The UK House Price Index of HM Land Registry and the ONS, or your own assumption.

Where the property is: each UK nation has its own figures.

To show the result in today’s money, for example 2, the Bank of England’s target.

%

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Enter the property’s value to see the result.

Gain or loss in value
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Total change
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Years
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Year by year

The year-by-year table comes with a future value projection.

Recent calculations

Nothing yet: copy, export or save a calculation to find it here.

How it works

Choose a question. To project, enter what the property is worth today, the number of years and the yearly change: the UK House Price Index average over the last ten years, its latest yearly change, or your own rate. To measure, enter the price you paid, the value today and how long you have owned it. Add an inflation rate to see the result in today’s money.

Project a future value

The value changes by the same percentage each year, applied to the previous year’s value: £250,000 at 3.3% a year is worth £258,250 after one year and £345,894.16 after ten. Pick the nation the property is in to use its own figures; Northern Ireland’s are quarterly. The year-by-year table shows the estimated value at the end of each year.

Measure past growth

The average yearly growth is the steady rate that, applied each year, turns the price you paid into today’s value over the time you have owned the property (a compound annual growth rate). Enter part-years as decimals: 7.5 for seven and a half years. Over less than a year, read the total change rather than the yearly rate.

Allow for inflation

With an inflation rate, a projection is also shown in today’s money, and the price you paid is brought up to today’s money, so you can see whether the property has beaten rising prices. The Bank of England’s inflation target is 2%.

The figures used

The UK House Price Index is calculated by the Office for National Statistics and Land & Property Services Northern Ireland from data provided by HM Land Registry, Registers of Scotland, Land & Property Services and the Valuation Office Agency, and HM Land Registry publishes it. It follows the prices of registered residential sales, new-build and existing homes alike. The latest months are provisional and are often revised as more sales are registered.

Rounding and reusing the result

Amounts are rounded to the nearest penny and percentages to two decimal places, with halves rounded away from zero. Copy the workings in one click, export the result as a CSV file or save it to Priostack.

Future value = value today × (1 + yearly change)^years.

Total change = value today ÷ price paid − 1.

Average yearly change = (value today ÷ price paid)^(1 ÷ years) − 1.

In today’s money: a future value is divided by (1 + inflation)^years, and a price paid is multiplied by the same factor.

Example: the average UK home over ten years

HM Land Registry’s average UK house price was £198,186 in August 2016 and £273,037 in August 2026. That is a gain of £74,851, a total change of 37.77% and average yearly growth of 3.26%, which the calculator rounds to 3.3% for its ten-year option. Projected forward at 3.3% a year, a £250,000 home would be worth £345,894.16 in ten years; with 2% inflation, that is £283,753.69 in today’s money.

Frequently asked questions

How much do UK house prices rise each year?

It varies a lot by year and by place. In the 12 months to August 2026 the UK average rose 0.9%: 0.4% in England, 2.9% in Scotland and 3.1% in Wales, while London fell 2.2%. Northern Ireland’s prices rose 9.2% in the year to the second quarter of 2026. Over the ten years to August 2026 the UK average grew by about 3.3% a year. These figures are provisional; the September 2026 index is due on 18 November 2026.

Is the ten-year average a forecast?

No. It describes what happened, not what will happen: prices can stall or fall for years at a time. Treat it as one scenario, and try a lower or a negative rate to see the range of outcomes.

Does the gain include buying and selling costs?

No. The calculator compares prices only. Property taxes on purchase, legal and estate agent fees and the cost of any improvements all reduce what you actually make, and the index follows the price of a typical home, not of yours.

Will I pay tax on the gain?

Usually not on your main home. You get Private Residence Relief, and no Capital Gains Tax to pay, when you sell if you have one home and have lived in it as your main home for all the time you owned it, you have not let part of it out (a lodger does not count), you have not used part of it only for business, the grounds are under 5,000 square metres and you did not buy it just to make a gain. A second home or a buy-to-let is different.

Why has my home grown faster or slower than the index?

The index measures typical price changes across all the sales in an area. A single home can do better or worse because of its type, condition, works done or local demand: in the year to August 2026, flats fell 1.6% on average while semi-detached houses rose 2.1%.

Sources

  1. HM Land Registry: UK House Price Index summary, August 2026 (21 October 2026)
  2. HM Land Registry: UK House Price Index data downloads, August 2026 (average prices) (21 October 2026)
  3. GOV.UK: Tax when you sell your home (Private Residence Relief) (12 June 2015)
  4. Bank of England: Inflation and the 2% target (21 October 2026)

This calculator gives general information, not legal, tax, financial or accounting advice. Past house price changes do not predict future ones: before a decision about a property, take advice from a qualified professional.

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